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Synxcom SM9234D, User Manual

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AT Commands 

Page 103 

 

Synchronous Access Mode Commands 

Three commands support Synchronous Access Mode: 

 

+ES  

Enables and disables Synchronous Access Mode in the client or 

central site modem (see 0) 

 

+ESA  

Configures the operation of the Synchronous Access Submode 

 

+ITF  

Selects Transmit Flow Control Thresholds 

Enabling Synchronous Access Mode enables the use of the 8-bit command 
characters defined in Table 9/V.80 of the Draft ITU-T Recommendation V.80 
(DATA COMMUNICATION OVER THE TELEPHONE NETWORK; In-Band 
DCE Control and Synchronous Data Modes for Asynchronous DTE). 

+ESA - Configure Synchronous Access Submode 

The operation of the Synchronous Access sub-Mode is configured by the +ESA 
parameter. 

This extended-format compound parameter is used to control the manner of 
operation of the Synchronous Access Mode in the modem. It accepts six numeric 
subparameters:  

Syntax 

+ESA=[<trans_idle>[,<framed_idle>[,<framed_un_ov>[,<hd_auto>[,<crc
_type>[,<nrzi_en> [,<syn1>[,<syn2>]]]]]]]] 

Defined Value 

 

<trans_idle>  Specifies the bit sequence transmitted by the modem when a transmit 

data buffer underrun condition occurs, while operating in Transparent 
sub-Mode. The options are: 

 

0  In Transparent sub-Mode, modem transmits 8-bit SYN 

sequence on idle. Modem receiver does not hunt for 
synchronization sequence (default and fixed). 

<framed_idle>  Specifies the bit sequence transmitted by the modem when a transmit 

data buffer underrun condition occurs immediately after a flag, while 
operating in Framed sub-Mode. The options are: 

 

0  In Framed sub-Mode, modem transmits HDLC flags on idle 

(default and fixed). 

<framed_un_ov

> 

Specifies the actions undertaken by the modem when a transmit data 
buffer underrun or overrun condition occurs immediately after a non-flag 
octet, while operating in Framed sub-Mode. 

 

0  In Framed sub-Mode, modem transmits abort on underrun in 

middle of frame (default). 

 

1  In Framed sub-Mode, DCE transmits a flag on underrun in 

middle of frame, and notifies DTE of underrun or overrun. 

<hd_auto>  Specifies whether or not, in V.34 half-duplex operation, additional 

procedures besides those specified in § 12/V.34 shall be performed by 
the modem when switching from primary channel to secondary channel 
operation, and vice versa. This subparameter should not be 

Summary of Contents for SM9234D

Page 1: ...SM9256D and SM9234D Modems User s Guide 0049 2500 001 Rev B ...

Page 2: ...lity or fitness for a particular purpose Synxcom Corporation will makes best efforts to update or keep current the information in this User s Guide and reserves the right to make changes to this User s Guide and or product without notice No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying recording or information stora...

Page 3: ...nce by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and the receiver Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected Consult the dealer or an experienced radio TV technician for help If none of these actions resolves the problem consult your distributor or an expe...

Page 4: ...the Telephone Company may discontinue your service temporarily If possible they will notify you in advance But if advance notice is not practical you will be notified as soon as possible You will be informed of your right to file a complaint with the FCC Your telephone company may make changes in its facilities equipment operations or procedures that could affect the proper functioning of your equ...

Page 5: ...Page v local or long distance transmission charges ...

Page 6: ......

Page 7: ...L ORIGINATING TESTING 25 STORING TELEPHONE NUMBERS 29 CONFIGURING THE DL TIMEOUT 30 ENABLING THE AUTO CONNECT FEATURE 30 VIEWING THE CURRENT DL SETTING 30 SYNTAX AND PROCEDURES 31 ALPHABET 31 DTE COMMANDS LINES 31 Command Line General Format 32 Command Line Editing 32 Command Line Echo 32 Repeating a Command Line 33 Types of DTE Commands 33 BASIC SYNTAX COMMANDS 33 Basic Syntax Command Format 33 S...

Page 8: ...MR Request Revision Identification 52 GCAP Request Complete Capabilities List 52 GCI Country of Installation 52 F Restore Factory Configuration Profile 53 T Local Analog Loopback Test 54 Y Designate a Default Reset Profile 54 W Store Current Configuration 54 Zn x Store Telephone Number 54 7 Plug and Play Serial Number 55 8 Plug and Play Vendor ID and Product Number 55 Load Flash Memory 55 DTE Mode...

Page 9: ...91 B CCITT or Bell 91 Error Control Command 92 ES Error Control and Synchronous Mode Selection 92 EB Break Handling in Error Control Operation 93 ESR Selective Repeat 94 EFCS 32 bit Frame Check Sequence 94 ER Error Control Reporting 94 ER value 95 ER type 95 ETBM Call Termination Buffer Management 95 B Transmit Break to Remote 96 K Break Control 96 K MNP Extended Services 97 3 2 6 Data Compression...

Page 10: ... Time for Carrier Silence or Dial Tone 126 S8 Pause Time For Dial Delay 127 S9 Carrier Detect Response Time 127 S10 Lost Carrier To Hang Up Delay 127 S11 DTMF Tone Duration 128 S12 Escape Prompt Delay EPD 128 S14 General Bit Mapped Options Status 128 S16 Test Mode Bit Mapped Options Status 129 S19 Reserved 129 S20 Reserved 129 S21 V 24 General Bit Mapped Options Status 129 S22 Speaker Results Bit ...

Page 11: ...ntrol Transmission 151 Fax Control Reception 151 Fax Data Transmission 153 Fax Data Reception 153 COMMANDS AND PARAMETERS 154 Mode Entry Commands 154 FCLASS 1 Select Facsimile Class 1 Mode 154 FCLASS 1 0 Select Facsimile Class 1 0 Mode 154 Mode Commands 155 FAA Auto Answer Enable 155 FAE Auto Answer Enable 155 FTS Transmit Silence 155 FRS Receive Silence 156 FTM Transmit Facsimile 156 FRM Receive ...

Page 12: ...rrent Session Capabilities 183 FDIS Report Remote Station Capabilities 183 FCFR Indicate Confirmation to Receive 184 FTSI Report the Transmit Station ID 184 FCSI Report the Called Station ID 184 FPTS Receive Page Transfer Status 184 FET Post Page Message Response 185 FPTS Transmit Page Transfer Status 185 FHNG Call Termination with Status 185 FCIG Report the Polled Station ID 185 FDTC Report the P...

Page 13: ...GT Voice Gain Transmit Playback Volume 202 VIT Voice Inactivity Timer DTE Modem 202 VLS Analog Source Destination Selection 202 VRA Ringback Goes Away Timer 206 VRN Ringback Never Appeared Timer 206 VSD Silence Detection Quiet and Silence 207 VSM Compression Method Selection 208 VTD Beep Tone Duration Timer 209 VDR Distinctive Ring 209 VDT Control Tone Cadence Reporting 210 VPR Select DTE Modem In...

Page 14: ......

Page 15: ...rity features ideal for personal and corporate applications The SM9256D easily handles tasks such as remote LAN access telecommuting remote file transfer access to the Internet and any other applications that require fast reliable transmission speeds Features 2 wire unconditioned dial up telephone line Build with industrial grade components to meet and operate under harsh environment ITU V 92 capa...

Page 16: ...9256D DC V92 56K V34 V32bis V32 V22bis Stand alone DC power 10 48 VDC Model SM9234D V34 V32bis V32 V22bis 33 6K Stand alone with AC power module 90 to 264 VAC or 100 400 VDC Model SM9234D DC V34 V32bis V32 V22bis 33 6K Stand alone DC power 10 48 VDC Mounting kit Accessories EN2 KIT DIN DIN Rail Mounting Kit for S A units EN2 KIT WMB Wall Panel mounting kit for S A units ...

Page 17: ...Introduction Page 17 ...

Page 18: ......

Page 19: ...tional items The power source that matches the model you order AC power module or 10 48VDC A standard wall mounted telephone jack RJ 11C located within 6 feet of your computer For RS 232 interface a shielded serial cable with a 9 pin male connector for connecting to your SM9256D SM9234D The connector on the other end of the cable should match the requirements of your computer or Data Terminal Equi...

Page 20: ... the modem for RS 485 RS 422 interface you will need to connect your DTE RTU to the RJ 11 connector as shown in Fig 1 below and set up the DTE configuration DIP switches SW1 provided on the modem PCB as indicated in the table below DTE RTU Interface SW 1 SW 2 SW 3 SW 4 SW 5 SW 6 RS 232 DB 9 default OFF OFF OFF OFF OFF OFF RS 485 4 wire full duplex ON ON ON OFF OFF ON RS 485 2 wire half duplex OFF ...

Page 21: ...d of the DTE DCE cable no cross over cable to your computer Connect the other end of the cable to the DB 9 female connector on the back of your SM9256D modem 4 Connect either end of the supplied RJ 11 cable to a telephone wall jack Connect the other end of the cable to the WALL jack on the back of your SM9256D modem 5 Connect the AC to DC power supply module to the modem If DC power source is used...

Page 22: ...New Hardware Wizard appears click Finish to complete the driver installation procedure Windows 2000 If your computer contains the Microsoft Windows 2000 operating system use the following procedure to install the modem driver 1 Windows detects your SM9256D modem automatically 2 In your computer s CD ROM drive insert the supplied driver CD 3 Click Search for a suitable driver for my device recommen...

Page 23: ... a ring signal is received Flow control for your DTE or RTU if any is used Serial Port Data Speed The modem is set to auto speed detect auto baud in default mode When a AT string is received it will set its speed and character format automatically to match the terminal speed until the power is recycled or reset If the modem is in answering mode only it is necessary to configure the DTE speed to ma...

Page 24: ...eter the new setting remains in effect until your modem is powered off The next time your modem is powered up auto answer is disabled again To keep auto answer enabled each time the modem is powered up use the AT W command to save your changes in the modem s nonvolatile memory For more information about using this command to store AT commands in nonvolatile memory refer to the W command on page 54...

Page 25: ... Call Originating Testing Use the following procedure to test the modem s ability to place a call 1 Using terminal emulation software such as HyperTerminal issue the AT command ATD your number where your number is the telephone number your modem is connected to For example if your modem is connected to the line 555 1212 type ATD5551212 2 You should hear the modem originate the call followed by a b...

Page 26: ......

Page 27: ...Using the Modem s Auto Connect Feature Page 27 Chapter 3 Using the Modem s Security Features This section is available with the security modems only ...

Page 28: ...Using the Modem s Auto Connect Feature Page 28 ...

Page 29: ... a connection for example if the number dialed is busy or the called modem does not answer your modem automatically dials the next number stored with the Zn x command The modem repeats this round robin method until a dialed number results in a data connection Storing Telephone Numbers Before you use the Zn x command store up to four telephone numbers in your modem s nonvolatile memory These are th...

Page 30: ...is feature your modem automatically dials the dial string in nonvolatile memory position 0 If your modem fails to make a data connection it waits the DL timeout time specified by Register S32 then automatically dials the dial string stored in the next nonvolatile memory position Your modem continues this round robin s until it makes a data connection with a remote modem If the remote modem disconn...

Page 31: ... order seven bits of each character are significant to the modem any eighth or higher order bit s if present are ignored for the purpose of identifying commands and parameters Lower case characters are considered identical to their upper case equivalents when received by the modem from the DTE Result codes from the modem are in upper case DTE Commands Lines Words enclosed in angle brackets are ref...

Page 32: ...reted as a request from the DTE to the modem to delete the previous character Any control characters IA5 0 0 through 1 15 inclusive that remain in the command line after receipt of the termination character are ignored by the modem The modem checks characters from the DTE first to see if they match the termination character S3 then the editing character S5 before checking for other characters This...

Page 33: ...cular function of the equipment which generally involves more than the simple storage of a value for later use or tested to determine whether or not the equipment implements the action command and if sub parameters are associated with the action the ranges of sub parameter values that are supported Parameters may be set to store a value or values for later use read to determine the current value o...

Page 34: ...h the letter S are known as S parameters The number following the S indicates the parameter number being referenced If the number is not recognized as a valid parameter number an ERROR result code is issued Immediately following this number either a or character must appear is used to read the current value of the indicated S parameter is used to set the S parameter to a new value S parameter_numb...

Page 35: ...s used e g F for Fax or V for voice The modem considers lower case characters to be the same as their upper case equivalents Values When sub parameters are associated with the execution of an action or when setting a parameter the command may include specification of values This is indicated by the appearance of value in the descriptions below value consists of either a numeric constant or a strin...

Page 36: ...digits For example 0D is a string consisting of the single character CR IA5 0 13 If the character itself is to be represented in a string it is encoded as 5C The double quote character used as the beginning and ending string delimiter is represented within a string constant as 22 A null string constant or a string constant of zero length is represented by two adjacent delimiters Compound Values Ac...

Page 37: ... the default value for string subparameters is empty string The following syntax is used for actions that have no subparameters name The following syntax is used for actions that have one subparameter name value The following syntax is used for actions that have two or more subparameters name compound_value For actions that accept subparameters if all subparameters are defined as being optional an...

Page 38: ...of such parameters rather than respond with an ERROR result code if the continued correct operation of the interface between the modem and DTE will not be affected by such action Read only parameters may be read and tested Read write parameters may be set by the DTE to store a value or values for later use Read write parameters may be set read and tested Parameters may take either a single value o...

Page 39: ...owing syntax name The modem responds by sending the current values stored for the parameter to the DTE in an information text response The format of this response is described in the definition of the parameter Generally the values are sent in the same form in which they would be issued by the DTE in a parameter setting command if multiple values are supported they will generally be separated by c...

Page 40: ... as an improperly terminated command line In this case the modem may or may not generate an ERROR message The modem will ignore any characters received from the DTE that are not part of a properly formatted command line If the maximum number of characters that the modem can accept in the body is exceeded an ERROR result code is generated after the command line is terminated The DTE will not begin ...

Page 41: ...at other rates When such an aborting event is recognized by the modem the modem terminates the command in progress and returns an appropriate result code to the DTE as specified for the particular command Handling of Invalid Numbers and S Parameter Values The modem reacts to undefined numbers and S parameter values in one of three ways Issue the ERROR result code and leave the previous value of th...

Page 42: ... determined by the V command The trailer consists of two characters being the character having the ordinal value of parameter S3 followed by the character having the ordinal value of parameter S4 Information text usually consists of a single line information text returned in response to some commands may contain multiple lines and the text may therefore include CR LF and other formatting character...

Page 43: ...aders and trailers associated with extended syntax result codes in the same manner as basic format result codes however unlike basic format result codes extended syntax result codes have no numeric equivalent and are always issued in alphabetic form Extended syntax result codes are subject to suppression by the Q1 command as with basic format result codes The issuance of extended syntax result cod...

Page 44: ...n character from the value no space appears between the result code name and the colon If multiple values are to be reported with the result code the form is name compound_i Fax Modes If a single value is to be reported the form of the result code is value or value ...

Page 45: ...then the values may be listed individually separated by comma characters or when a continuous range of values is supported by the first value in the range followed by a hyphen character followed by the last value in the range The specification of single values and ranges of values may be intermixed within a single information text In all cases the supported values are indicated in ascending order ...

Page 46: ...ands Page 46 This indicates that the first subparameter accepts only the value 0 the second accepts any value from 1 through 3 inclusive and the third subparameter accepts any of the values 0 4 5 6 9 11 or 12 ...

Page 47: ... Escape Code Sequence When the modem has established a connection and has entered on line data mode it is possible to break into the data transmission in order to issue further commands to the modem in an on line command mode This is achieved by the DTE sending to the modem a sequence of three ASCII characters specified by register S2 The default character is The maximum time allowed between recei...

Page 48: ...h corresponds to the selected service class 0 Select Data Mode Default 1 Select Facsimile Class 1 Mode 1 0 Select Facsimile Class 1 0 Mode 2 Select Facsimile Class 2 Mode 8 Select Voice Mode 10 Reserved Result Codes OK value 0 or 1 For mode 0 1 1 0 2 8 and 10 SmartSCM only OK value 0 or 1 For mode 0 1 1 0 8 and 10 other than SmartSCM ERROR Otherwise Reporting Current or Selected Values Command FCL...

Page 49: ...rrent or Selected Values Command VCID Response VCID pmode Example VCID 0 For the default setting Reporting Supported Range of Parameter Values Command VCID Response VCID pmode range Example VCID 0 2 VRID Report Retrieved Caller ID CID This command reports the data associated with the Caller ID services in the Incoming Call Line ID ICLID data format for the last received call Syntax VRID pmode Defi...

Page 50: ...make a reliable connection results in the modem falling back to the speed buffered normal mode Forces Q5 S36 7 and S48 7 5 Selects LAPM error correction mode Failure to make an LAPM error correction connection results in the modem hanging up Forces Q5 and S48 0 Note The K1 command can override the N4 command 6 Selects MNP error correction mode Failure to make an MNP error correction connection res...

Page 51: ...ded 4 Reports OEM defined identifier string in either Hayes compatible binary format default or ASCII format selectable by ConfigurACE e g a007040284C6002F bC60000000 r1005111151012000 3000111170000000 5 Reports Country Code parameter see GCI 6 Reports modem data pump model and internalcode revision Example RCV56DPF PLL L8773A Rev 14 00 34 00 7 Reports OK Result Codes OK value 0 7 ERROR Otherwise ...

Page 52: ...andard includes command s that indicate general capabilities the names s of those commands will be reported to the modem in response to a GCAP command Syntax GCAP Example Responses GCAP FCLASS MS ES DS for a data modem that supports all capabilities listed Where FCLASS T class1 F Class 1 Facsimile modem Control MS M commands Modulation Control MS and MR commands ES E commands Error Control ES EB E...

Page 53: ...ult Otherwise the default is defined by the OEM Factory default is B5 United States Reporting Current or Selected Values Command GCI Response GCI current country_code Example GCI 3D The modem is set for France Reporting Supported Range of Parameter Values Command GCI Response GCI country_code country_code country_code Example GCI 20 73 B5 The modem can be set for Canada Mexico or the United States...

Page 54: ...mal number corresponding to the selected profile 0 The modem will use profile 0 1 The modem will use profile 1 Result Codes OK value 0 to 1 ERROR If value 1 or if NVRAM is not installed or is not operational W Store Current Configuration Saves the current active configuration profile including S Parameters in one of the two user profiles in NVRAM as denoted by the parameter value This command will...

Page 55: ...o display the stored serial number issue AT cr 8 Plug and Play Vendor ID and Product Number Sets and stores Vendor ID and product number for serial Plug and Play and for ISA Plug and Play which use the Conexant 11596 Plug and Play device Applicable to Desktop configuration only Syntax 8 3 ASCII characters 4 hex numbers same 3 ASCII characters same 4 hex numbers cr Example 8 3 ASCII characters 4 he...

Page 56: ...to the flash memory device This transfer is done via XMODEM transfer If the user wishes to download existing firmware from the modem then he will set up the host PC for XMODEM receive and the downloader FLM will begin to send the existing firmware from the flash memory to the host PC Procedure 1 Install in the modem a flash memory programmed with the modem firmware or a blank flash memory 2 Put th...

Page 57: ...restart at step 5 Download error Re Load Displayed if there was an error when uploading or downloading If this occurs the user should restart at step 5 Error No H W flow ctl Displayed if RTS CTS flow control is not set If this occurs the user should restart at step 3 DTE timeout Displayed if the DTE has stopped the XMODEM transfer process before it is finished If this occurs the user should restar...

Page 58: ... The modem enables or disables the echo of characters to the DTE The parameter value if valid is written to S14 bit 1 Syntax E value Defined Values value Decimal number corresponding to the option 0 Disables command echo 1 Enables command echo Default Result Codes OK value 0 or 1 ERROR Otherwise Q Quiet Results Codes Control The command enables or disables the sending of result codes to the DTE Th...

Page 59: ...DTE speed e g CONNECT 19200 Subsequent responses are disabled Default 1 Upon connection the modem reports the modulation line speed the error correction protocol and the DTE speed respectively Subsequent responses are disabled 2 Upon connection the modem the DCE speed e g CONNECT 14400 Subsequent responses are disabled Result Codes OK value 0 or 1 ERROR Otherwise X Extended Result Codes This comma...

Page 60: ...e detection is enforced selected and dial tone is not detected N CARRIER will be reported instead of NO DIAL TONE The value 100b is written to S22 bits 6 5 and 4 respectively 2 Disables reporting of busy tones unless forced otherwise by country requirements send only OK CONNECT RING NO CARRIER ERROR NO DIAL TONE NO ANSWER and CONNECT XXXX If busy tone detection is enforced and busy tone is detecte...

Page 61: ... CONNECT 115200 1 X X X X 20 CONNECT 230400 X X X X X 21 CONNECT 75TX 1200RX 1 X X X X 23 CONNECT 1200TX 75RX 1 X X X X 24 DELAY 4 4 4 4 X 32 BACKLISTED 4 4 4 4 X 33 FAX X X X X X 35 DATA X X X X X 40 MRR 300 X X X X X 44 MRR 1200 75 X X X X X 45 MRR 75 1200 X X X X X 46 MRR 1200 X X X X X 47 MRR 2400 X X X X X 48 MRR 4800 X X X X X 49 MRR 7200 X X X X X 50 MRR 9600 X X X X X 51 MRR 12000 X X X X ...

Page 62: ...MCR V22B X X X X X 139 MRR V23 X X X X X 140 MCR V32 X X X X X 141 MCR V32B X X X X X 142 MCR V34 X X X X X Note 3 144 MCR K56 X X X X X Note 3 145 MCR V90 X X X X X Note 3 150 MCR 32000 X X X X X Note 3 151 MRR 34000 X X X X X Note 3 152 MRR 36000 X X X X X Note 3 153 MRR 38000 X X X X X Note 3 154 MRR 40000 X X X X X Note 3 155 MRR 42000 X X X X X Note 3 156 MRR 44000 X X X X X Note 3 157 MRR 46...

Page 63: ...X X X X Note 3 192 CONNECT 50667 X X X X X Note 3 193 CONNECT 53333 X X X X X Note 3 194 CONNECT 54667 X X X X X Note 3 195 MRR 28000 X X X X X Note 3 196 MRR 29333 X X X X X Note 3 197 MRR 30667 X X X X X Note 3 198 MRR 33333 X X X X X Note 3 199 MRR 34667 X X X X X Note 3 200 MRR 37333 X X X X X Note 3 201 MRR 38667 X X X X X Note 3 202 MRR 41333 X X X X X Note 3 203 MRR 42667 X X X X X Note 3 2...

Page 64: ...rovide DTR Q1 DTR drop causes the modem to hang up Auto answer is not affected Q2 Q3 DTR drop causes the modem to hang up Auto answer is inhibited 1 DTR drop is interpreted according to the current Qn setting as follows Q0 Q1 Q5 Q6 DTR drop is interpreted by the modem as if the asynchronous escape sequence had been entered The modem returns to asynchronous command state without disconnecting Q2 Q3...

Page 65: ... selects direct mode This is because the N0 command is analogous to the Q6 command The value 000b is written to S27 bits 3 1 and 0 respectively See Q 1 Selects synchronous connect mode with async off line command mode The value 001b is written to S27 bits 3 1 and 0 respectively Serial interface operation only SmartACF and SmartACFL only 2 Selects synchronous connect mode with async off line comman...

Page 66: ...elects synchronous connect mode with async off line command mode and enables DTR dialing of directory 0 The value 010b is written to S27 bits 3 1 and 0 respectively See M2 Serial interface operation only SmartACF and SmartACFL only 3 Selects synchronous connect mode with async off line command mode and enables DTR to act as Talk Data switch The value 011b is written to S27 bits 3 1 and 0 respectiv...

Page 67: ...if valid is written to S21 bit 6 Syntax S value Defined Values value Decimal number corresponding to the option 0 DSR will remain ON at all times Default 1 DSR will become active after answer tone has been detected and inactive after the carrier has been lost Result Codes OK value 0 or 1 ERROR Otherwise X Select Synchronous Clock Source Selects the source of the transmit clock for the synchronous ...

Page 68: ...ble by the modem The specified rate takes effect following the issuance of any result code s associated with the current command line The rate specified does not apply in Online Data State if Normal Mode Direct Mode of operation is selected Syntax IPR rate Defined Values rate Specifies the DTE modem interface operation rate in bits s The available rates are 0 300 1200 2400 4800 9600 19200 38400 57...

Page 69: ...al flow control DTE_by_modem Specifies the method to be used by the modem to control the flow of transmitted data from the DTE 0 None 1 XON XOFF on received data 2 CTS RTS Default Reporting Current or Selected Values Command IFC Response IFC modem_by_DTE DTE_by_modem Example IFC 2 2 For the defaults Reporting Supported Range of Parameter Values Command IFC Response IFC modem_by_DTE range DTE_by_mo...

Page 70: ...le ILRR 19200 Call Control D Dial This command directs the modem to go on line dial according to the string entered and attempt to establish a connection If no dial string is supplied the modem will go on line and attempt the handshake in originate mode NOTE If the ATD command is issued before the S1 register has cleared the modem will respond with the NO CARRIER result code If FCLASS 0 is selecte...

Page 71: ...t is dialed T Select tone dialing tone dial the numbers that follow until a P is encountered Affects current and subsequent dialing Some countries prevent changing dialing modes after the first digit is dialed R This command will be accepted but not acted on S n Dial the number stored in the directory n 0 to 3 See Z Flash the modem will go on hook for a time defined by the value of S29 Country req...

Page 72: ... in progress and go back on hook Toggles calling tone enable disable applicable to current dial attempt only Ignored may be used to format the dial string Ignored may be used to format the dial string space Ignored may be used to format the dial string i Invalid character will be ignored If enabled by country specific parameter the modem will generate a grounding pulse on the EARTH relay output T ...

Page 73: ...V 21 answer mode It will generate the V 21 2100 Hz answer tone for 3 0 5 seconds and following a delay of 70 ms will proceed as if the FTH 3 command were issued At any stage up to but excluding the FTH 3 command state any character will abort the communication See the description of the FTH command for details H Disconnect Hang Up This command initiates a hang up sequence This command may not be a...

Page 74: ... speed change used for diagnostic purpose only 3 Renegotiate rate without speed change used for diagnostic purpose only 4 Renegotiate rate down one speed used for diagnostic purpose only 5 Renegotiate rate up one speed used for diagnostic purpose only Result Codes OK value 0 to 5 and a connection exists ERROR Otherwise or if not connected L Speaker Volume This command sets the speaker volume contr...

Page 75: ...ome countries Result Codes OK value 0 to 2 ERROR Otherwise P Select Pulse Dial Make Break Ratio This command determines the make break ratio used during pulse dialing It is only effective if the appropriate bit to enable this command is set through the ConfigurACE program If enabled it will override the make break ratios in the OEM parameters in ConfigurACE The default is country dependent The par...

Page 76: ... S38 020 S46 138 S48 007 S95 000 STORED PROFILE 0 B1 E1 L1 M1 N0 QO T V1 W0 X4 Y0 C1 D2 G0 J0 K3 Q5 R1 S0 T5 X0 S00 000 S02 043 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 S12 050 S18 000 S36 007 S40 104 S41 195 S46 138 S95 000 STORED PROFILE 1 B1 E1 L1 M1 N0 QO T V1 W0 X4 Y0 C1 D2 G0 J0 K3 Q5 R1 S0 T5 X0 S00 000 S02 043 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 S12 050 S18 000 S36 007 S...

Page 77: ...4 Licensee code 81 Conexant Third byte Octet 15 manufacturer s product capabilities Fourth byte Octet 16 K56flex version number Fifth byte Octet 17 Conexant pump code version number Sixth byte Octet 18 x law and controller version number Bit 6 Forced Not forced A Law µ Law 0 Forced A Law µ Law 1 Not forced A Law µ Law Bit 5 Select A Law or µ Law 0 Select A Law 1 Select µ Law Bit 4 0 Controller ver...

Page 78: ...rotocol LAPM for LAP M protocol Compression V44 for V 44 compression V42B for V 42bis compression ALT for Microcom MNP5 compression Note Compression is omitted if protocol is NONE Line Speed Asymmetric rates are displayed as rate TX rate RX e g 1200 TX 75 RX Symmetric rates are displayed as a single DCE rate e g 14400 L Report Line Signal Level Returns a value which indicates the received signal l...

Page 79: ...y associated with each The modem will return a list of delayed telephone numbers as defined in the B command The format of the response is shown by the example below delay times are shown as hours minutes seconds If no numbers are delayed only the OK result code is issued Syntax D Example NO PHONE NUMBER DELAY 1 8264734660 2 00 00 2 7532634661 2 00 00 3 2587334662 0 02 00 4 7532651663 0 03 25 5 74...

Page 80: ...isable Disable 5 Enable Disable Enable 6 Enable Enable Disable 7 Enable Enable Enable Reporting Current or Selected Values Command STE Response STE value Example STE 4 Remote Hangup enabled Extension Pickup disabled and Line In Use disabled Reporting Supported Range of Parameter Values Command STE Show available options Response STE 0 7 Example ILRR 0 1 Result Codes OK value 0 7 ERROR Otherwise Be...

Page 81: ...ed while Line In Use detection is enabled and the telephone line is in use the modem will immediately return the message LINE IN USE to the DTE without going off hook and then return to command mode Case 2 Telephone Line is in Use But Disconnected If an ATDT ATDP or ATDL is issued while Line In Use detection is enabled and the telephone line is NOT in use the modem will go off hook after a short p...

Page 82: ...er Because the extension is off hook the modem cannot flash the hook for the central office to generate a dial tone In this case you must flash the extension handset to obtain a dial tone Remote Hang up enabled by AT STE 4 AT STE 5 AT STE 6 or AT STE 7 Case 1 Modem off hook Remote Hang up If the modem is connected off hook and the remote modem server goes hangs up the central office may issue a li...

Page 83: ...t there is silence on the line and the modem tries to dial AT STE 3 ATDT555 1212 Modem goes off hook NO DIAL TONE Modem is connected in data mode and an extension goes off hook AT STE 2 ATDT555 1212 CONNECT NO CARRIER Extension is picked up GSTN Cleardown sent ATS86 025 Modem is connected in data mode and remote modem goes on hook AT STE 4 ATDT555 1212 CONNECT NO CARRIER Remote modem drops line AT...

Page 84: ...AT Commands Page 84 ATS86 025 500ms after no carrier a dial tone is heard on the local handset ...

Page 85: ...r the highest priority The automated system would make a connection when the line is free It would do this without disturbing the line if the line is in use The automated system would periodically retry the connection until the line is free Once the line is free it would dial and make its connection If a voice user wishes to use the line while the modem is connected The modem will drop the line an...

Page 86: ...0 V 22 V22 1200 V 22bis V22B 2400 or 1200 V 23 V23C 1200 V 32 V32 9600 or 4800 V 32bis V32B 14400 12000 9600 7200 or 4800 V 34 V34 33600 31200 28800 26400 24000 21600 19200 16800 14400 12000 9600 7200 4800 or 2400 K56flex K56 56000 54000 52000 50000 48000 46000 44000 42000 40000 38000 36000 34000 32000 V 90 V90 56000 54667 53333 52000 50667 49333 48000 46667 45333 44000 42667 41333 40000 38667 373...

Page 87: ...AT Commands Page 87 example modem models supporting V92 may not support K56 ...

Page 88: ... the selected carrier min_tx_rate and max_tx_rate Numeric values which specify the lowest min_tx_rate and highest max_tx_rate rate at which the modem may establish a transmit connection Non zero values for this subparameter are decimal encoded in units of bit s The possible values for each modulation are listed in Table 3 3 Actual values will be limited to possible values corresponding to the ente...

Page 89: ... the W command setting determines modulation result code reporting see S95 Parameter and W Command Syntax MR value Defined Value value A decimal number corresponding to the selected option 0 Disables reporting of modulation connection MCR and MRR are not transmitted Default 1 Enables reporting of modulation connection MCR and MRR are transmitted with tx rate rx rate 2 Enables reporting of modulati...

Page 90: ...ard Default Result Codes OK value 0 1 or 2 ERROR Otherwise Fallback Fall Forward When E2 is active the modem monitors the line quality EQM When line quality is insufficient the modem will initiate a rate renegotiation to a lower speed within the V 34 V 32bis V 32 RC336 modulation speeds The modem will keep falling back within the current modulation if necessary until the speed reaches 2400 bps V 3...

Page 91: ...ITT or Bell When the modem is configured to allow either option the modem will select Bell or CCITT modulation for a line speed connection of 300 or 1200 bps Any other line speed will use a CCITT modulation standard The parameter value if valid is written to S27 bit 6 Syntax B value Defined Value value Decimal number corresponding to the selected option 0 Selects CCITT operation at 300 or 1200 bps...

Page 92: ...t 4 Initiate MNP 6 Initiate V 80 Synchronous Access Mode when connection is completed and Data State is entered See ESA and ITF commands 7 Initiate Frame Tunneling Mode when connection is complete and Data Mode is entered orig_fbk Decimal number which specifies the acceptable fallback mode of operation when the modem is operating as the originator 0 LAPM MNP or Normal Mode error control optional D...

Page 93: ... Enable V 42 with Detection Phase originator allow LAPM MNP or Normal Mode connection answer Disable Synchronous Access Mode originator and answerer Reporting Current or Selected Values Command ES Response ES orig_rqst orig_fbk ans_fbk Example ES 3 0 2 For the default setting ES 6 0 8 For V 80 Synchronous Access Mode originator and answerer Reporting Supported Range of Parameter Values Command ES ...

Page 94: ...e ESR 0 EFCS 32 bit Frame Check Sequence This extended format numeric parameter controls the use of the 16 bit or 32 bit frame check sequence FCS option in V 42 Syntax EFCS value Defined Value value Decimal number 0 specifying the use of the 16 bit FCS specified in V 42 Reporting Current or Selected Values Command EFCS Response EFCS value Example EFCS 0 For default setting Reporting Supported Rang...

Page 95: ...ll be used if any before the final result code e g CONNECT is transmitted The format of this result code is The ER intermediate result code if enabled is issued after the Modulation report MCR and MRR and before the Data Compression Report DR Syntax ER type Defined Value type An alphanumeric code corresponding to the selected protocol NONE Error control is not in use LAPM V 42 LAPM protocol is in ...

Page 96: ...yntax B value Defined Value value Decimal number corresponding to the selected option 1 9 Break length in 100 ms units Default 3 Non error corrected mode only Result Codes OK If connected in data modem mode NO CARRIER If not connected or connected in fax modem mode Note When the modem receives a break from the remote modem break is passed to the DTE as follows In non error correction mode direct t...

Page 97: ...mote modem during a non error corrected connection 0 Clears data buffers and sends break to the DTE 1 Clears data buffers and sends break to the DTE Same as 0 2 Send a break immediately to DTE 3 Send a break immediately to DTE Same as 2 4 Send a break in sequence with received data to DTE 5 Send a break in sequence with received data to DTE Same as 4 Default Result Codes OK 0 to 5 ERROR Otherwise ...

Page 98: ... specified in direction max_dict Specifies the maximum number of dictionary entries 2048 entries which should be negotiated may be used by the DTE to limit the codeword size transmitted based on its knowledge of the nature of the data to be transmitted max_string Specifies the maximum string length 32 bytes to be negotiated V 42bis P2 Reporting Current or Selected Values Command DS Response DS dir...

Page 99: ...that specifies the maximum string length to be negotiated in the transmit direction Default 32 max_string_rx Decimal number from 32 to 255 that specifies the maximum string length to be negotiated in the receive direction Default 32 max_history_tx Decimal number from 2048 to 4096 that specifies the maximum size of the history buffer to be negotiated in the transmit direction Default 4096 max_histo...

Page 100: ...nse DR value range Example DR 0 1 DR type Intermediate Result Code The DR type reported represents the current negotiated or renegotiated modem modem data compression type If enabled the intermediate result code is transmitted at the point after error control negotiation handshaking at which the modem has determined which data compression technique will be used if any and the direction of operatio...

Page 101: ...us implementation of other negotiation means e g V 8bis V 18 V 32bis Annex A This command is a compound parameter if issued while the modem is on hook used to precondition V 8 and V 8bis originating and answering operation It is issued by the DTE before the Dial D or Answer A command regardless of the state of the FCLASS parameter This command is an action command if issued while the modem is off ...

Page 102: ...r subparameter values v8o 6 and v8a 5 the A8I indications are issued during the course of the V 8 session to notify the DTE when the relevant V 8 signals are received Reporting Current or Selected Values Command A8E Response A8E v8o v8a v8cf v8b cfrange protrange Example A8E 1 1 00 1 0 0 For the defaults Reporting Supported Range of Parameter Values Command A8E Response A8E v8o range v8a range v8c...

Page 103: ...d by the modem when a transmit data buffer underrun condition occurs while operating in Transparent sub Mode The options are 0 In Transparent sub Mode modem transmits 8 bit SYN sequence on idle Modem receiver does not hunt for synchronization sequence default and fixed framed_idle Specifies the bit sequence transmitted by the modem when a transmit data buffer underrun condition occurs immediately ...

Page 104: ... Reporting Supported Options The modem reports the supported options in response to the following command ESA The response is ESA list of supported trans_idle values list of supported framed_idle values list of supported framed_un_ov values list of supported hd_auto values list of supported crc_type values list of supported nrzi_en values list of supported syn1 values list of supported syn2 values...

Page 105: ...s V 24 interface and the Synchronous Access protocol layer i e the buffer count includes all octets including EM codes received from the DTE with the exception of DC1 and DC3 if these are used to signal modem by DTE flow control The modem returns the ERROR result code if the DTE specifies that the off subparameter be set to a value less than or equal to the on subparameter in this case the current...

Page 106: ...nts 1 Power off 2 Hard reset e g negate DTR with D3 set reset button 3 Soft reset ATZ or AT F 4 ATD command issued 5 ATA command issued 6 Automatic answer e g set register S0 0 and ring detected 7 These results are NOT cleared by changing DTR V 24 circuit 108 2 if D0 D1 or D2 Data Call State Model For purposes of this command there are four data call states and associated status issues Call Setup ...

Page 107: ...AT Commands Page 107 Data Transfer Bit error rates for each direction ...

Page 108: ...ll setup failed only that result is useful Each information text line is formatted as follows including one or more key value pairs Syntax UD Response DIAG token key value key value key value Defined Value DIAG 5 hexadecimal characters 44h 49h 41h 47h 20h Left angle bracket less than sign 3Ch token Unique 32 bit hexadecimal string 2A4D3263 32h 4h1 34h 44h 33h 32h 36h 33h Space space character 20h ...

Page 109: ...TU V 80 are recommended if available in the modem If V 80 methods are used each response line shall be a separate extended in band message Notes for Tables 1 The modem may insert a delay e g 10 ms between information text lines 2 The code tables include values for data and fax calls Some of the codes are applicable only to data calls e g data compression some are applicable only to call originatio...

Page 110: ...0 64000 in bit s 30 0 FF Temporary carrier loss event count 31 0 FF Carrier Rate re negotiation event count 32 0 FF Carrier Retrains requested 33 0 FF Carrier Retrain requests granted 34 0 FA00 Final transmit carrier data rate in bit s 35 0 FA00 Final receive carrier data rate in bit s 40 Table 3 10 Protocol Negotiation Result 41 0 400 Error Control frame size in bytes 42 0 FF Error control link t...

Page 111: ... detected e g V 25 CT V 8 CI 9 Fax Answering signal detected e g T 30 CED DIS A Fax Calling signal detected e g T 30 CNG B V 8bis signal detected Table A 6 Multimedia Modes Code Definition 0 Data Only 1 Fax Only 2 Voice 9 Video telephony H 324 A Other V 80 call Table A 7 DTE DCE modes Code Definition 0 Async data 1 V 80 transparent synchronous mode 2 V 80 framed synchronous mode Table A 8 V 34 INF...

Page 112: ...r 1200 75 8 V 27ter G3 Fax call 9 V 29 HD G3 Fax call A V 32 B V 32bis C V 34 E V 90 and V 92 81 K56fle 84 Bell 212A 85 Bell 103 Table A 10 errorControl Active from 3 5 2 V 58 Value Description 0 Disable none 1 V 42 LAPM 2 V 42 Alternative protocol MNP 80 MNP10 Table A 11 compressionActive from 3 2 2 V 58 Value Description 0 None 1 V 42bis and V 44 80 MNP5 ...

Page 113: ...oming call while sending dial command 2E LoopCurrentInterrupted 2F NoDial tone 31 ReorderTone Fast busy 33 EngagedTone Busy 34 LongSpaceDisconnect And if modem program to abort on long space 3C CarrierLost Signal Converter 3D TrainingFailed 3E NoModulationinCommon 3F RetrainFailed 40 RetrainAttemptCountExceede d 41 GstnCleardownReceived 42 FaxDetected If this was not a fax call attempt 46 InTestMo...

Page 114: ...F40 27 DAC0 Receiver V 90 training completed V 90 symbol rate 8000 initial receive rate is 56000 bit s DIAG 2A4D3263 30 00 31 03 32 01 33 01 No carrier loss events 3 carrier rate renegotiations attempted 1 carrier retrain requested 1 carrier retrain granted DIAG 2A4D3263 34 7080 35 CB20 Final transmit rate is 28800 bit s final receive rate is 52000 bit s DIAG 2A4D3263 40 1 41 100 LAPM negotiation ...

Page 115: ...tion Dial up operation continues Result Codes OK 0 ERROR Otherwise M Enable Cellular Power Level Adjustment This command is included for compatibility only and has no effect other than returning a result code Syntax L value Defined Value value Decimal number corresponding to the selected option 0 M0 command 1 M1 command 2 M2 command Result Codes OK 0 to 2 ERROR Otherwise M Initial Cellular Power L...

Page 116: ...RROR Otherwise FastConnect Commands F FastConnect Control This command allows configuring of the client modem to connect to a central site modem that supports non standard V 22 and V 22bis FastConnect protocols Syntax F n Defined Value n Decimal number which specifies the initial requested mode of operation when the modem is operating as the originator The options are 0 Normal connection Default 1...

Page 117: ...default setting Reporting Supported Range of Parameter Values Command PCW Response PCW value range Example PCW 0 1 2 PMH Modem on Hold Enable This command controls the selection of modem on hold in the modem The action of the modem in response to modem on hold events is determined by the state of this command as well as the state of a negotiated handshake with a V 92 compliant server in V 92 Mode ...

Page 118: ... value Example PMHT 0 For the default setting Reporting Supported Range of Parameter Values Command PMHT Response PMHT value range Example PMHT 0 1 2 3 4 5 6 7 8 9 10 11 12 13 PMHR Initiate Modem on Hold This command requests the modem to initiate or to confirm a modem on hold procedure The modem will return ERROR if modem on hold is not enabled or if the modem is in an idle condition The modem wi...

Page 119: ...he state of a negotiated handshake with a V 92 compliant server in V 92 Mode Syntax PIG value Defined Value value Decimal number corresponding to selected operation 0 Enable PCM upstream negotiation 1 Disable PCM upstream negotiation Default Result Codes OK 0 or 1 in V 92 Mode MS V 92 ERROR Otherwise Reporting Selected Values Command PIG Response PIG value Example PIG 1 For the default setting Rep...

Page 120: ...QC value range Example PQC 0 1 3 PSS Use Short Sequence This command causes a calling modem to force either a V 92 short or full startup sequence as defined by the PQC command on the next and subsequent connections Syntax PSS value Defined Value value Decimal number corresponding to the selected sequence 0 The modems decide whether or not to use the short startup procedures The short startup proce...

Page 121: ...des OK In V 92 Mode MS V 92 ERROR Otherwise QCPS Enable Quick Connect Profile Save This command controls whether or not the modem will save the generated quick connect profile Syntax QCPS value Defined Value value Decimal number corresponding to the desired operation 0 Do not allow the quick connect profile to be saved 1 Allow the quick connect profile to be saved Default Result Codes OK 0 or 1 in...

Page 122: ...t register accessed n v Sets S Parameter n to the value v n Reports the value of S Parameter n The parameter n can be omitted in which case the last S Parameter accessed will be assumed The S can be omitted for AT and AT in which case the last S Parameter accessed will be assumed For example ATS7 establishes S7 as the last accessed register AT 40 sets the contents of the last register accessed to ...

Page 123: ...m firmware configuration Consult the MCU firmware release notes for exact configuration The factory default values may be loaded at any time by entering the Fn command Table A 14 S Parameter Summary Register Function Range Units Saved Default S0 Rings to Auto Answer 0 255 rings 0 S1 Ring Counter 0 255 rings 0 S2 Escape Character 0 255 ASCII 43 S3 Carriage Return Character 0 127 ASCII 13 S4 Line Fe...

Page 124: ...ons Status 192 C0h S32 DL Timeout 0 255 30 sec 30 S36 LAPM Failure Control 7 S38 Delay Before Forced Hangup 0 255 s 20 S39 Flow Control Bit Mapped Options Status 3 S40 General Bit Mapped Options Status 104 68h S41 General Bit Mapped Options Status 195 C3h S46 Data Compression Control 138 S48 V 42 Negotiation Control 7 S86 Call Failure Indication 0 26 21 S91 PSTN Transmit Attenuation Level 0 15 dBm...

Page 125: ...lue of the ASCII character used as the escape character The default value corresponds to an ASCII A value over 127 disables the escape process i e no escape character will be recognized Range 0 255 ASCII decimal Default 43 S3 Carriage Return Character S3 sets the command line and result code terminator character Pertains to asynchronous operation only Range 0 127 ASCII decimal Default 13 Carriage ...

Page 126: ...er may be affected by some ATX options according to country restrictions The Wait for Dial Tone call progress feature W dial modifier in the dial string will override the value in register S6 US models 2 Sets the length of time in seconds that the modem will wait for dial tone when encountering a W dial modifier before returning NO DIAL TONE result code W class The modem always pauses for a minimu...

Page 127: ...o Hang Up Delay S10 sets the length of time in tenths of a second that the modem waits before hanging up after a loss of carrier This allows for a temporary carrier loss without causing the local modem to disconnect When register S10 is set to 255 the modem functions as if a carrier is always present The actual interval the modem waits before disconnecting is the value in register S10 minus the va...

Page 128: ...ding of the OK result code to the DTE If any characters are detected during this time the OK will not be sent Sending of the OK result code does not affect entry into command mode Range 0 255 1 50 of a second Default 50 1 second S14 General Bit Mapped Options Status S14 indicates the status of command options Default 138 8Ah 10001010b Bit 0 This bit is ignored Bit 1 Command echo En 0 Disabled E0 1...

Page 129: ... backwards compatibility only No value can be written Responds with default value Range None Default 0 S21 V 24 General Bit Mapped Options Status S21 indicates the status of command options Default 52 34h 00110100b Bits 0 1 Reserved 0 Bit 2 CTS behavior Rn 0 CTS tracks RTS R0 1 CTS always on R1 Default Bits 3 4 DTR behavior Dn 0 D0 selected 1 D1 selected 2 D2 selected Default 3 D3 selected Bit 5 R...

Page 130: ...one Gn 0 None G0 Default 1 None G1 2 1800 Hz G2 S24 Sleep Inactivity Timer S24 sets the length of time in seconds that the modem will operate in normal mode with no detected telephone line or DTE line activity before entering low power sleep mode The timer is reset upon any DTE line or telephone line activity If the S24 value is zero neither DTE line nor telephone inactivity will cause the modem t...

Page 131: ... or Q2 0 1 1 M3 or Q3 10 0 Reserved 1 0 1 Q5 Default 11 0 Q6 Bit 2 Leased line control Ln 0 Dial up line L0 Default Bits 4 5 Internal clock select Xn 0 Internal clock X0 Default 1 External clock X1 2 Slave clock X2 Bit 6 CCITT Bell mode select Bn 0 CCITT mode B0 1 Bell mode B1 Default Bit 7 Reserved S28 Bit Mapped Options Status S28 indicates bit mapped options status Default 0 Bits 0 1 Reserved B...

Page 132: ... received will reset the timer In other modes any data transmitted will reset the timer The timer is inoperative in synchronous mode Range 0 255 tens of seconds 0 2550 seconds Default 0 disabled S31 Bit Mapped Options Status S31 indicates bit mapped options status Default 192 C0h 11000000b Bit 0 Single line connect message enable disable Vn 0 Messages controlled by S95 Wn and Vn V0 Default 1 Singl...

Page 133: ...ng up S38 specifies the delay between the modem s receipt of the H command to disconnect or ON to OFF transition of DTR if the modem is programmed to follow the signal and the disconnect operation Applicable to error correction connection only This parameter can be used to ensure that data in the modem buffer is sent before the modem disconnects 1 If S38 is set to a value between 0 and 254 the mod...

Page 134: ...ptions Status S41 indicates the status of command options Default 13 C3h 00001101b Bits 0 1 Compression selection Cn 0 Disabled C0 1 MNP 5 C1 2 V 42bis C2 3 MNP 5 and V 42bis C3 Default Bits 2 6 Auto retrain and fallback fall forward En Bit 6 Bit 2 0 0 Retrain and fallback fall forward disabled E0 0 1 Retrain enabled E1 1 0 Fallback fall forward enabled E2 Default Bit 3 Reserved Bits 4 5 Reserved ...

Page 135: ...on for the failed connection S86 records the first event that contributes to a NO CARRIER message The code definitions are Range 0 26 Default 21 S86 0 Normal hangup no error occurred S86 1 Reserved S86 2 Reserved S86 3 Call Waiting caused disconnect S86 4 Physical carrier loss S86 5 No error correction at the other end S86 6 No response to feature negotiation S86 7 This modem is async only the oth...

Page 136: ...AT Commands Page 136 S86 26 Remote hangup detected ...

Page 137: ...g ConfigurACE Range 0 to 15 dBm Corresponding to 0 to 15 dBm transmit level Default 10 10 dBm transmit level S95 Extended Result Codes Control A bit set to a 1 in this parameter in conjunction with the W command will enable the corresponding extended result code see Table A 6 The MR ER and DR settings also control S95 bits 2 3 and 5 respectively The more recent settings of MR ER and DR or host wri...

Page 138: ...rface to most cellular telephones eliminating the need for other intelligent interfaces Landline modems operate with the telephone system by either going off hook detecting dial tone and the dialing the telephone number using pulses or DTMF digits or detecting the RING signal and answering the call Intelligent cellular phone interfaces connect between the modems RJ 11 socket and the cellular phone...

Page 139: ...he modem issues the OK message The user then performs an ASCII download of the driver in S37 format from the host to the modem typically using a communications software package with transmit pacing turned off C2 Download Cellular Phone command Result Codes OK Download Process OK Cellular phone driver download completed successfully ERROR Cellular phone driver download not completed successfully e ...

Page 140: ...download is necessary when a cellular cable is detected implied cellular phone is also connected in which T6 will return a value of 128 bit 7 1 Once a driver is downloaded to the modem it will be able to operate in landline or cellular mode based on detection of a cellular cable Operation Once the driver is loaded and the modem is connected to the cellular phone and the phone is powered on dial an...

Page 141: ...herwise use the configuration above If MNP10 EC is enabled manually using AT SEC 1 no particular modulation will be chosen therefore to force V 32bis modulation they should use the AT MS 10 1 minspeed maxspeed command e g AT MS 10 1 4800 12000 would force V 32bis and limit the speed between 4800 and 12000 bps To allow V 34 modulation use AT MS 11 1 minspeed maxspeed e g AT MS 11 1 4800 19200 would...

Page 142: ...cellular data connection should be attempted in a location where adequate signal strength is observed for the cellular phone This condition can be easily monitored on some phones with signal strength indicator In locations where even voice calls are unreliable data connections should not be attempted Under some circumstances a special high gain antenna may improve performance Additional informatio...

Page 143: ... BTxlv x Mod V 32bis Mode EC RTxlv Driver BTxlv x AT F SEC 1 x Mod V 32bis Mode Single EC RTxlv x BTxlv 10 Mod V 32bis Mode Single EC RTxlv x BTxlv 10 Mod V 32bis Mode EC RTxlv x BTxlv x Mod V 32bis Mode EC RTxlv x BTxlv x V 34 PSTN AT F Mod V 34 Mode non EC RTxlv 10 BTxlv 10 Mod V 32bis Mode non EC RTxlv 10 BTxlv 10 Mod V 34 Mode Single EC RTxlv 10 BTxlv x Mod V 32bis Mode Single EC RTxlv 10 BTxl...

Page 144: ...ter ceases but no carrier is detected within the period of time determined by register S7 or 2 No ringback is detected within the period of time determined by register S7 Also sent when the modem auto disconnects due to loss of carrier For X0 sent for the following conditions 1 If busy tone detection is enforced busy or circuit busy has been detected 2 If dial tone detection is enforced or selecte...

Page 145: ... is considered blacklisted 33 FAX A fax modem connection is established in a facsimile mode 35 DATA A data modem connection is established in a facsimile mode 40 MRR 300 The modem has connected to the line at 300 bps and carrier reporting is enabled See S95 and Xn 44 MRR 1200 75 The V 23 backward channel carrier is detected and carrier reporting is enabled See S95 and Xn 45 MRR 75 1200 The V 23 fo...

Page 146: ... speed reporting is enabled 91 CONNECT 31200 The modem has connected to the line DTE speed is 31200 bps and the modem is to report the DTE speed upon connecting 134 MCR B103 The modem has connected to the line with Bell 103 modulation and modulation reporting is enabled See MR S95 and Xn 135 MCR B212 The modem has connected to the line with Bell 212 modulation and modulation reporting is enabled S...

Page 147: ... CONNECT 46000 The modem has connected to the line at 46000 bps and DCE speed reporting is enabled 173 CONNECT 48000 The modem has connected to the line at 48000 bps and DCE speed reporting is enabled 174 CONNECT 50000 The modem has connected to the line at 50000 bps and DCE speed reporting is enabled 175 CONNECT 52000 The modem has connected to the line at 52000 bps and DCE speed reporting is ena...

Page 148: ...ted to the line at 38667 bps and carrier reporting is enabled See S95 and Xn 202 MRR 41333 The modem has connected to the line at 41333 bps and carrier reporting is enabled See S95 and Xn 203 MRR 42667 The modem has connected to the line at 42667 bps and carrier reporting is enabled See S95 and Xn 204 MRR 45333 The modem has connected to the line at 45333 bps and carrier reporting is enabled See S...

Page 149: ...einserted into the I O date stream These control characters and their resultant action are described below DTE to Modem Transmit Data Stream Characters Detected Action Taken DLE data Delete DLE data characters DLE ETX Recognize as a string terminator and take appropriate action DLE DLE Replace with single DLE character Modem to DTE Receive Data Stream Characters Detected Action Taken DLE Insert ex...

Page 150: ...AR off on Adaptive reception control X FCL time Carrier loss timeout X FDD value Double escape character replacement control X FIT time action DTE inactivity timeout X FPR rate Fixed DTE Rate X FMI Report manufacturer ID X FMM Report model ID X FMR Report revision ID X FLO Flow Control X K Local DTE modem flow control X X A Answer X X D strin Dial X X H Hangup X X X Applicable Not applicable Fax O...

Page 151: ...efore transmitting the characters to the remote fax machine Each DLE DLE sequence is transmitted as a single DLE DLE ETX is considered as the end of frame marker and is not transmitted All data received from the DTE after DLE ETX is ignored by the modem until the modem generates either the CONNECT OK or ERROR result code If no more data is in the transmit buffer and the final bit was a 1 bit 4 of ...

Page 152: ...n the buffer the modem sends the next frame of buffered data to the DTE followed by DLE ETX and either the ERROR result code if errors were detected or the OK result code if no errors were detected The modem then returns to command mode The modem concludes an error is detected if carrier is lost for any period of time during or before the reception of a frame If carrier is lost for a time period l...

Page 153: ... until it receives a character from the DTE When data is received from the DTE the modem deletes start and stop bits and deletes all DLE chr character pairs before transmitting the data to the remote Each DLE DLE sequence is transmitted as a single DLE DLE ETX is considered As the end of stream maker and is not transmitted All data received from the DTE after the DLE ETX is ignored by the modem un...

Page 154: ...ow occurred If the modem receives any character from the DTE after the FRM command except flow control characters if software flow control is in effect or if the modem detects a high to low transition of the DTR signal while D1 is in effect it sends DLE ETX to the DTE generates the OK result code and returns to command mode The receive buffer is cleared and all data received from the remote is dis...

Page 155: ...e Default 1 Enable data fax auto answer mode The modem determines the calling type and issues DATA result code 13 if the caller is a data modem or issues FAX result code 15 if the caller is a faxmodem After a data not fax connection is achieved indicated by the DATA result code the DTE must issue an ATO command to cause the modem to go on line FTS Transmit Silence This command causes the modem to ...

Page 156: ...ngth of time in 10 ms intervals to delay before responding with the OK result code after detecting silence on the line Result Codes OK Reported when silence has been present on the line for the specified amount of time or when the DTE sends the modem a character other than XON or XOFF ERROR value is invalid or this command is issued while the modem is on hook Reporting Supported Range of Parameter...

Page 157: ...of a valid mod value ERROR If the modem s transmit buffer becomes empty and the last transmitted character is NUL 00 the modem continues to transmit NULs until the DTE sends more data or five seconds elapses After five seconds elapse with a empty transmit return to the command state and report the ERROR result code OK If the modem s transmit buffer becomes empty and the last transmitted character ...

Page 158: ...figured flow control from the DTE the modem then returns to the command state FTH Transmit Data with HDLC Framing This command causes the modem to transmit data using HDLC protocol and the modulation defined below Syntax FTH mod Defined Value mod Decimal number corresponding to the selected modulation mode and data rates shown in Table A 18 Result Codes CONNECT Reported for either of two condition...

Page 159: ... FRH 98 For V 17 9600 bps Reporting Supported Range of Parameter Values Command FRH Response FRH Example FRH 98 For V 17 9600 bps Result Codes CONNECT Reported for either of two conditions 1 When the selected carrier is detected with an HDLC flag 2 If the DTE sends another FTH MOD command after sending the result code indicating frame reception is complete FCERROR Reported if a different carrier i...

Page 160: ...TE to select the modem s loss of carrier delay between initial loss of carrier and qualified loss of carrier when the modem will give up and exit a receive mode Intermediate less than FCL timeout loss of carrier should be indicated by insertion of the SQ BAD signal quality indicator in the received data stream In unframed receive modes if the modem detects RTC as described in Recommendation T 30 p...

Page 161: ... FDD Response FDD value Example FDD 0 For the default setting Reporting Supported Range of Parameter Values Command FDD Response FDD value range Example FDD 0 FIT DTE Inactivity Timeout This command specifies a DTE inactivity timeout value that allows the modem to break away from an unsuccessful connection attempt at any stage of a facsimile transfer The DTE inactivity timer operates only while th...

Page 162: ...It may be used to select operation at rates at which the modem is not capable of automatically detecting the data rate being used by the DTE Specifying a value of 0 disables the function and allows operation only at rates automatically detectable by the modem The specified rate takes effect following the issuance of any result code s associated with the current command line The rate specified does...

Page 163: ...fication This command causes the modem to transmit one or more lines of information text identifying the modem version revision level or date Syntax FMR Typical Response V3 001 V90_2M_DLS OK FLO Flow Control This parameter allows the DTE to identify and select the type of flow control used Syntax FLO method Defined Values method Decimal number corresponding to the selected option 0 XON XOFF and RT...

Page 164: ... frame AT FRH 3 implied by dialing with FCLASS 1 0 AT FRH 3 CONNECT CFI frame data DLE ETX OK Detect flags get CSI get FCS accept FCS send CSI frame check FCS Frame status OK AT FRH 3 CONNECT DIS frame data DLE ETX OK Detect flags get DIS get FCS accept FCS send DIS frame check FCS DTE must detect final frame bit to anticipate loss of carrier AT FRH 3 NO CARRIER detect loss of carrier drop carrier...

Page 165: ...odem Action Remote Station Action Notes AT FCLASS 1 OK Set Class 1 RING detect ringing dials send CNG ATA CSI frame data DLE ETX DIS frame data DLE ETX CONNECT CONNECT OK off hook send CED send V 21 carrier send flags send CSI frame send FCS send flags send DIS data send FCS and flags drop carrier get CED detect carrier detect flags receive CSI get FCS get flags get DIS get flags AT FRH 3 implied ...

Page 166: ...t 75 ms send V 21 carrier send flags send EOP frame send FCS frame OK AT FRH 3 NO CARRIER detect loss of carrier drop carrier AT FRH 3 MCFame data DLE ETX CONNECT OK send V 21 carrier send flags get MCF frame send FCS accept FCS detect carrier detect flags receive MCF frame final frame AT FRH 3 CONNECT DCN frame data DLE ETX OK detect carrier detect flags receive DCN receive FCS accept FCS send V ...

Page 167: ...n FDIS Report Remote Identification FCFR Indicate Confirmation to Receive FTSI Report the Transmit Station ID FCSI Report the Called Station ID FPTS Page Transfer Status FET Post Page Message Response FHNG Call Termination with Status Class 2 Session Parameters FMFR Identify Manufacturer FMDL Identify Model FREV Identify Revision FDCC DCE Capabilities Parameters FDIS Current Sessions Parameters FD...

Page 168: ...f the A command must begin with the character sequence AT and must be terminated by a carriage return Commands entered in upper case or lower case are accepted but both the A and T must be of the same case i e AT ASCII 065 084 or at ASCII 097 116 The body is a string of commands restricted to printable ASCII characters 032 126 Space characters ASCII 032 and control characters other than CR ASCII 0...

Page 169: ...CLASS 0 CR in Data Mode or AT FCLASS 2 CR in Service Class 2 Fax is OK The service class may be set by the DTE from the choices available using the FCLASS VALUE command General Rules 1 Fnnn commands must be entered completely otherwise an ERROR response is sent 2 All response messages are preceded and followed by CR LF Multiple response commands e g FDIS FCSI and FDCS will therefore appear to a ha...

Page 170: ...here is no provision for data flow control from DCE to DTE Data Stream Termination The DCE exchanges streams of data with the DTE while executing data transfer commands These data streams use the termination described in ISO 2111 The ASCII DLE character 016 is used as a special character to shield special characters The DLE ETX character pair 106 003 is used to mark the end of a stream The followi...

Page 171: ...ntrols this feature Fax adaptive answer operates only when FCLASS 0 AT FAA 1 Auto answer as a facsimile or a data modem depending on the call CONNECT XXXX DCE status response if data call FCON DCE status response if fax call Identification of T 30 Options Group 3 devices negotiate session parameters in DIS DCS and DTC frames These parameters are defined in Table A 23 Session Status Reporting The D...

Page 172: ...nd selection information Each of these three commands cause the DCE to send a message to the DTE The messages are programmable using ConfigurACE FMFR Request Manufacturer Identification The FMFR command causes the DCE to send a message identifying the DCE product manufacturer The default message is CONEXANT OK FMDL Identify Product Model The FMDL command causes the DCE to send a message identifyin...

Page 173: ...ports an appropriate failure or error type result code such as NO CARRIER NO DIAL TONE or BUSY If this call is successful the typical DCE response is ATDnn nn go off hook dial get CED FCON DCE detects flags FCSI remote ID string FDCS T 30 subparameter string OK The DCE dials detects call progress and generates the CNG tone It then waits for a DIS frame On detection of the first Phase B preamble V ...

Page 174: ...meter and hunts for the first T 30 negotiation frames Upon detection of the first Phase B preamble V 21 ch 2 modulated by 300 bps HDLC flags it reports the FCON message to the DTE The DTE should report the initial received T 30 negotiation messages including the DCS frame The FDCS report will be followed by the OK final result code Automatic Answer The modem provides for automatic answering of inc...

Page 175: ...CT XON when ready for data After placing a call or after finishing a document exchange the DTE may command the DCE to re enter T 30 Phase B to attempt to negotiate a document transmission Continue a Page CONNECT XON The DTE may issue more than one FDT command for a given page so that different files may be concatenated together These files must have the same format Phase C Data Framing Phase C dat...

Page 176: ... C data e g RTC it will send only one EOL 1 Phase C data must conform to T 4 specifications 2 The DTE need not include a final RTC since the DCE will append an RTC in response to an FET command 3 Some facsimile machines may treat two EOLs as an RTC CAN Escape from Transmission The DCE may request the DTE to halt Phase C transmission by sending a cancel CAN character 024 to the DTE In this case the...

Page 177: ...ied Read 2 2 D uncompressed mode 3 2 D modified modified Read EC Error Correction 0 Disable ECM Annex A T 30 1 Enable ECM 64 bytes frame 2 Enable ECM 256 bytes frame BF Binary File Transfer 0 Disable BFT 1 Enable BFT ST Scan Time Line VR normal VR fine 0 0 ms 0 ms 1 5 ms 5 ms 2 10 ms 5 ms 3 10 ms 10 ms 4 20 ms 10 ms 5 20 ms 20 ms 6 40 ms 20 ms 7 40 ms 40 ms Notes 1 CCITT T 30 does not provide for ...

Page 178: ... the DCE will end the page and document transmission If the Phase C timeout is reached the DCE sends an EOP post page message and terminates the session The remote facsimile station should respond to the post page message with a post page response The DCE will report this using the FPTS ppr response Table A 25 End a Page The FET command causes the DCE to append an RTC 6 EOL pattern as needed and e...

Page 179: ...he DTE is ready to accept data it issues an DC2 character 018 to the DCE If the DTE issues an XOFF character to the DCE for flow control the DCE signals the DTE when its buffers are empty by sending a DLE DC2 016 018 character pair When the DCE delivers the last byte of a page the DCE reports the Page Transfer Status via the FPTS ppr response Table A 25 After a Page Transfer Status Report the DCE ...

Page 180: ...0 or PPS NULL FET 3 message The DCE response will be CONNECT DC2 needed from DTE here Phase C data stream DLE ETX FPTS ppr lc blc cblc FET ppm OK DTE must issue FDR command to release post page response If done receiving FHNG hangup cause code OK Continue page reception Phase C Data Framing Phase C data may be presented to the DTE in stream mode The DCE will transfer a stream of data to the DTE fo...

Page 181: ...pportunity and hang up At the end of the termination process the DCE will report the FHNG response with result code Table A 26 This operation can be invoked by using the cancel CAN character during Phase C data reception see prior section The DCE will wait until the current page completes unless the reception is of unlimited length in that case the DCE may halt reception and terminate the session ...

Page 182: ... send 22 COMREC error in transmit Phase B 23 COMREC invalid command received 24 RSPEC error 25 DCS sent three times without response 26 DIS DTC received 3 times DCS not recognized 27 Failure to train at 2400 bps or FMINSP value 28 RSPREC invalid response received 40 49 Transmit Phase C Hangup Codes 40 Unspecified Transmit Phase C error 43 DTE to DCE data underflow 50 69 Transmit Phase D Hangup Cod...

Page 183: ...his appendix The DCE precedes and follows the information responses with CR LF The DCE provides the on line status of several session parameters when they are available during T 30 handshaking These include the remote ID string and the DIS DCS parameters These responses report the T 30 session parameter frames The subparameters are described in Table A 23 FCON Facsimile Connection Response FCON in...

Page 184: ...smit Station ID This response reports the received transmit station ID string if any This message is generated in execution of Originate Answer FDT or FDR commands FCSI Report the Called Station ID Syntax FCSI CSI ID string Called Station ID This response reports the received called station ID string if any This message is generated in execution of Originate Answer FDT or FDR commands FPTS Receive...

Page 185: ... FPTS ppr response is generated in execution of a FET ppm command FHNG Call Termination with Status Syntax FHNG hangup status code FHNG indicates that the call has been terminated The hangup cause is reported and stored in the FAXERR parameter for later inspection The hangup status code values are described in Table A 27 FHNG hsc is a possible intermediate result code to any DTE action command des...

Page 186: ...The DTE may then decide to receive rather than transmit Service Class 2 Parameters All Service Class 2 parameters can be read written and tested for range of legal values by the DCE The general syntax is described earlier in this appendix Group 3 FAX devices negotiate session parameters in DIS DCS and DTC frames The following parameters are provided to condition the facsimile DCE for the capabilit...

Page 187: ...ed 0 0 0 0 0 0 0 0 upon initialization and at the beginning of a session If the DTE issues a FDCS command in the initial state the DCE reports CR LF 0 0 0 0 0 0 0 0 CR LF The contents of FDCS are spontaneously reported during execution of FDR or FDT commands by the FDCS VR BR WD LN BF EC BF ST response using the same compound parameter format Several commands and responses reference T 30 session n...

Page 188: ...irst 20 represents string length the second character values field reports supported string values 1 The string is saved in RAM 2 Non numeric characters are not filtered out 3 The string is right justified FCR Capability to Receive Write syntax FCR value Valid values 0 or 1 Default value 0 FCR 0 indicates that the DCE will not receive message data This can be used when the DTE has insufficient sto...

Page 189: ...eter after it receives a page of Phase C data The transmitting DCE sets this parameter with the status reported by the receiving station The DTE may inspect or modify this parameter The set of ppr values is defined in Table A 25 These values are also reported in the FPTS response to the FDR command ...

Page 190: ...en sends the T 30 EOP response to the remote device FAXERR T 30 Session Error Report Read syntax FAXERR table value read only Valid values 0 255 see Table A 26 for meaning This read only parameter indicates the cause of the hangup Table A 26 shows the valid values for this parameter as well as the meaning of the each value FAXERR is set by the DCE at the conclusion of a fax session The DCE resets ...

Page 191: ...implemented as follows First a data mode handshake is attempted If the DCE has been configured for automode detection using the MS command the DCE may try several protocols before terminating attempts to make a data mode connection This can take as long as 6 8 seconds If the data mode connection attempt fails a facsimile Class 2 connection is assumed When a connection is made as a result of the ad...

Page 192: ... FCSI csi FDIS dis codes OK Off hook dial Send CNG Detect flags Get CSI Get DIS Answer Send CED V 21 flags CSI DIS AT FDT 1st page data DLE ETX FDCS DCS codes CONNECT XON OK Send TSI Send DCS Send TCF Get CFR Send carrier Send page data Get TSI Get DCS Get TCF Send CFR Receive carrier Receive page data AT FET 0 FPTS 1 OK Send RTC Get MPS Get MCF Get RTC Get MPS Send MCF AT FDT 2nd page data DLE ET...

Page 193: ...et CED Get CSI Get DIS Send V 21 flags Send TSI Send DCS Start TCF AT FDR DC2 FCFR FDCS dcs codes CONNECT page data stream DLE ETX FPTS 1 lc FET 0 OK Accept TCF Send CFR Get page carrier Get page data Detect RTC Get MPS Finish TCF Get CFR Send pager carrier Send page data Send RTC Drop carrier Send MPS AT FDR DC2 CONNECT page data stream DLE ETX FPTS 1 lc FET 2 OK Send MCF Send page carrier Get pa...

Page 194: ...Tone Send Send single frequency or DTMF VTX Start modem Transmit Playback VGR Voice Gain Receive Record Gain VGT Voice Gain Transmit Playback Volume VIT Voice Inactivity Timer DTE Modem VLS Analog Source Destination Selection VRA Ringback Goes Away Timer VRN Ringback Never Appeared Timer VSD Silence Detection QUIET SILENCE VSM Compression Method Selection VTD Beep Tone Duration Timer VDR Distincti...

Page 195: ... tone shielding 7 15 DTMF transitions to off R 5 2 Ring 1 3 1 DTMF 1 2 3 2 DTMF 2 3 3 3 DTMF 3 4 3 4 DTMF 4 5 3 5 DTMF 5 6 3 6 DTMF 6 7 3 7 DTMF 7 8 3 8 DTMF 8 9 3 9 DTMF 9 0 3 0 DTMF 0 A 4 1 Extended Keypad DTMF A B 4 2 Extended Keypad DTMF B C 4 3 Extended Keypad DTMF C D 4 4 Extended Keypad DTMF D 2 10 Extended Keypad DTMF E 2 3 Extended Keypad DTMF F o 6 15 Receive Buffer Overrun c 6 3 Facsimi...

Page 196: ...ediate Command P 7 0 Action Number 9 Pause R 7 2 Action Number 10 Resume ETX 0 3 Action Number 11 End Voice Transmit State Stream Command CAN 1 8 Action Number 12 Clear transmit buffer of voice data Immediate Command 2 1 Action Number 15 Receive abort Immediate Command Voice Commands Configuration Commands FCLASS 8 Select Voice Mode FCLASS 8 selects the Voice Mode The Voice Mode commands and respo...

Page 197: ...out issuing another VNH A hang up event occurs see this table DTE issues VIP command Reporting Current or Selected Values Command VNH Response hook Example 0 For the default setting Reporting Supported Range of Parameter Values Command VNH Response hook range Example 0 2 Result Codes OK hook 0 2 ERROR Otherwise Voice Commands VIP Voice Initialize All Parameters This command causes the modem to ini...

Page 198: ...AT Commands Page 198 OK ERROR If not in Voice Mode ...

Page 199: ...ers are valid The quantity in the square brackets consists of a 3 element list freq1 freq2 dur which can be used to send single or dual tones The first element is the first frequency freq1 with range 0 or 200 3000 Hz The second element is the second frequency freq2 with range 0 or 200 3000 Hz The third element is the duration dur in 0 01 second intervals with range 0 255 ASCII units of 10 ms A lis...

Page 200: ...500 ms 5 Hookflash with a duration given by the VTD command 6 Play DTMF with a duration of 60 ms 7 Play tone pair at 800 Hz and 1300 Hz with a duration of 500 ms 8 Play DTMF 9 with a duration given by the VTD command Example 2 This example illustrates tone generation using null elements The command example is followed by a description of command execution AT VTS 1 2 1000 1300 50 800 9 1 Play DTMF ...

Page 201: ...setting Reporting Supported Range of Parameter Values Command VNH Response hook range Example 0 2 Result Codes CONNECT The modem accepts the command ERROR The modem is not connected to at least one off hook telephone line or one non telephone line VGR Voice Gain Receive Record Gain This command causes the modem to set the gain for received voice samples Syntax VTX Defined Values VGR gain 0 only va...

Page 202: ...Defined Values timer Decimal number corresponding to the time in units of 1 0 second A value of 0 disables the timer Reporting Current or Selected Values Command VIT Response timer Example 0 For the default setting Reporting Supported Range of Parameter Values Command VIT Response timer range Example 0 255 Result Codes OK timer 0 255 ERROR Otherwise or if not in Voice Mode VLS Analog Source Destin...

Page 203: ...ld The hex number format is defined in Table A 34 a one in the bit field indicates that the DCE can report the associated event Each of the possible hardware configurations has its own label idle event description line the above form description shows just one A CR LF terminates each description line Example AT VLS 0 B0804100 B0804100 B0804100 1 T 0B8433C1 0FE431C1 0B8431C1 2 L 08800300 0CE00100 0...

Page 204: ...ok DCE connected to the line Local phone provided with power to detect hook condition X 11 M1 External Microphone connected to the DCE DCE on hook Local phone connected to the line X 12 M1ST External Microphone and Internal Speaker connected to the line DCE off hook DCE connected to the line Local phone provided with power to detect hook condition X 13 M1S1T External Microphone and External Speake...

Page 205: ...ple 29 Stuttered Dial tone Simple note 1 30 Invalid Voice Data Format Simple 31 Lost Data Detected Event Simple 32 Facsimile Answer Simple Legend This table lists events without any regard as to whether the DCE reporting of the event is optional or mandatory and without assigning a DCE reporting mechanism The first column lists the event number assignment for each event The event number also serve...

Page 206: ...alues Command VRA Response interval range Example 0 255 255 25 5 sec Result Codes OK interval 0 255 ERROR Otherwise or if not in Voice Mode VRN Ringback Never Appeared Timer This command sets the length of time the modem will wait between ringbacks during call origination before the modem can assume that the remote station has gone off hook Syntax VRN interval Defined Values interval Decimal numbe...

Page 207: ...ndependent of presence or use of silence compression 128 Sets nominal long term silence detection independent of presence or use of silence compression 129 Sets more aggressive long term silence detection independent of presence or use of silence compression sdi Decimal number specifying the required period of silence in units of 0 1 second before the modem can report silence detected at the end o...

Page 208: ...vsr sds sel cml Decimal number identifying the compression method 1 129 130 140 or 141 cmid Alphanumeric string describing the compression method UNSIGNED PCM IMA ADPCM UNSIGNED PCM 2 Bit ADPCM or 4 Bit ADPCM bps Decimal number defining the average number of bits in the compressed sample not including silence compression 2 4 or 8 tm Decimal number 0 reporting the time interval in units of 0 1 seco...

Page 209: ... of the ring cadence information and to control the timing of the RING event code report if ring cadence reporting is enabled Syntax VDR enable report Defined Values enable Decimal number corresponding to the selected option 0 The modem will not report ring cadence information 1 The modem will not report ring cadence information report Decimal number specifying ring cadence information report when...

Page 210: ...ol tone cadence report report Decimal number specifying the produced any control tone cadence report when enabled by the enable subparameter 0 The modem will produce only CPOF and CPON messages Other Reserved Reporting Current or Selected Values Command VDT Response enable report Example 0 0 For the default setting Reporting Supported Range of Parameter Values Command VDT Response enable range rep...

Page 211: ...ne ON OFF This command turns the speakerphone ON or OFF Syntax VSP mode Defined Values mode Decimal number corresponding to the selected option 0 The speakerphone function is OFF Default The speakerphone function is ON Reporting Current or Selected Values Command VSP Response rate Example 0 For the default setting Reporting Supported Range of Parameter Values Command VSP Response mode range Exampl...

Page 212: ...sponse gain Example 64 For the default setting Reporting Supported Range of Parameter Values Command VGM Response gain range Example 0 255 Result Codes OK gain 0 255 ERROR Otherwise or if not in Voice Mode with speakerphone enabled VSP 1 VGS Speaker Gain This command causes the modem to set the speaker gain of the speakerphone function Syntax VGS gain Defined Values gain Decimal number between 0 a...

Page 213: ...AT Commands Page 213 ...

Page 214: ......

Page 215: ...s which have been subject to abuse misuse accident alteration neglect unauthorized repair or installation are not covered by the warranty Synxcom shall make the final determination as to the existence and cause of any alleged defect No liability is assumed for expendable items such as lamps and fuses No warranty is made with respect to custom products or Products produced to Customer s specificati...

Page 216: ... wish to return List the product model number usually found on the serial number tag the serial number for each item you wish to return a description of the problem you are encountering and the cause of the problem if known A product support specialist may call to verify that the product is properly installed or may ask you to perform tests to insure that the product has actually failed After revi...

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