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V.34 and V.32bis Data/Fax Modems 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

 

 

 

 

QUALITY COMMUNICATIONS PRODUCTS 

 

 

 

 

 

 

 

 

 

 

 

        Made in the U.S.A. 

 
 
 
 
 
 
 
 
 
 
 

11-1006-002 

 

Summary of Contents for V.32bis

Page 1: ...V 34 and V 32bis Data Fax Modems QUALITY COMMUNICATIONS PRODUCTS Made in the U S A 11 1006 002 ...

Page 2: ...s 4 AT Commands 8 AT Commands 11 AT Commands 12 AT Commands 14 MNP 10 Commands 15 AT COMMAND RESULT CODES 17 S REGISTERS 17 S REGISTER SUMMARY 18 S REGISTER DEFINITIONS 19 DUMB MODE OF OPERATION 30 LEASED LINE OPERATION 30 REMOTE CONFIGURATION 31 PASSWORD AND CALLER ID SECURITY 32 LOW POWER OPERATION 34 CERTIFICATIONS 35 ...

Page 3: ...se models with the optional 4 wire leased circuit interface please refer to the following diagram Transmit Pins TX Pins 3 4 Receive Pins RX Pins 2 5 PHONE This RJ 11 connector is not present on all models The phone jack directly parallels the line connector and allows another device to be connected to the same line as the modem This connector is not installed on rack mount versions RS 232 C This c...

Page 4: ...resent on all stand alone models and accepts a 9VAC or 9 14VDC power source On rack mount versions a different power connector is used and it provides DC voltages to the modem from the rack back plane CAUTION Several DC power options are available for special applications Modems equipped with special power options will contain specifications that supersede the power specifications of this paragrap...

Page 5: ...e in a command line command the remainder of the line will be ignored and the ERROR result code will be returned 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 sending to the modem a sequence of three A...

Page 6: ...esult code Dial Modifiers The valid dial string parameters are described below Punctuation characters may be used for clarity with parentheses hyphen and spaces being ignored 0 9 DTMF digits 0 to 9 The Star digit tone dialing only The gate digit tone dialing only A D DTMF digits A B C and D J Perform MNP10 link negotiation at 1200 bps K Enable power level adjustment during MNP10 link negotiation L...

Page 7: ...orted by the modem are possible according to the remote modem s preference F1 Selects V 21 or Bell 103 according to the B setting as the only acceptable line speed resulting in a subsequent connection F2 Not supported F3 Selects V 23 as the only acceptable line modulation for a subsequent connection Originator is at 75 bps and answerer is at 1200bps F4 Selects V 22 1200 or Bell 212A according to t...

Page 8: ...aker is always off M1 Speaker is on during call establishment but off when receiving carrier Default M2 Speaker is always on M3 Speaker is off when receiving carrier and during dialing but on during answering Nn Automode Enable This command enables or disables Automode detection N0 Automode detection is disabled N1 Automode detection is enabled Default On Return to On Line Data Mode This command d...

Page 9: ... the result messages will be used by the modem to inform the DTE of the results of commands X0 Disables monitoring of busy tones sends only OK CONNECT RING NO CARRIER ERROR and NO ANSWER result codes Blind dialing is enabled X1 Disables monitoring of busy tones sends onlyOK CONNECT RING NOCARRIER ERROR NO ANSWER and CONNECT XXXX XXXX rate Blind dialing is enabled X2 Disables monitoring of busy ton...

Page 10: ...rces modem to soft reset Fn Restore Factory Configuration profile This command loads the factory default configuration profile F0 Restore factory configuration 0 F1 Restore factory configuration 1 Gn Select Guard Tone This command controls the generation of guard tone G0 Disables guard tone G1 Disables guard tone G2 Selects 1800 Hz guard tone Jn Telephone Jack Control This command is only included...

Page 11: ...1 Selects 33 67 make break ratio at 10 pulses per second P2 Selects 39 61 make break ratio at 20 pulses per second P3 Selects 33 67 make break ratio at 20 pulses per second QN Sync Async Mode This command is an extension of the M command is used to control the connection modes permitted It is used in conjunction with S36 and S48 Q0 Selects direct asynchronous operation Q1 Selects synchronous conne...

Page 12: ...l analog loopback V 54 Loop 3 T2 Returns ERROR T3 Initiates local digital loopback V 54 Loop 2 T4 Enables digital loopback for remote request Default T5 Disables digital loopback for remote request T6 Requests a remote digital loopback V 54 Loop 2 without self test T7 Requests remote digital loopback V 54 Loop 2 with self test T8 Initiates local analog loopback V 54 Loop 3 with self test V Display...

Page 13: ...d MNP5 data compression Default En Enable Disable Line Quality Monitor and Auto Retrain or Fallback Fall Forward Controls whether or not the modem will automatically monitor the line quality and request a retrain E1 or fall back when line quality is insufficient or fall forward when line quality is sufficient E2 E0 Disable line quality monitor and auto retrain E1 Enable line quality monitor and au...

Page 14: ...ngs AT K remain active during a reliable link G0 Disables modem to modem flow control Default G1 Enables modem to modem XON XOFF flow control Hn Auto Connect In many cases where the dumb mode of operation is required it is necessary for the modem to be configured so that it constantly attempts to go off hook and connect as configured This is necessary for leased line operation or for operation wit...

Page 15: ...llback to normal mode auto reliable mode N4 V 42 only N5 V 42 with fallback to MNP only N6 V 42 with fallback to MNP with fallback to normal Default V1 Enhanced Connect Message Presents a comprehensive single line connect message showing DTE speed DCE speed protocol and compression AT COMMANDS MS Select Modulation This extended format command selects the modulation optionally enables or disables a...

Page 16: ...onse is MS list of supported mod values list of supported automode values list of supported min rate values list of supported max rate values For example MS 0 1 2 3 8 9 10 13 64 69 74 0 1 300 33600 300 33600 Subparameter Definitions 1 mod A decimal number which specifies the preferred modulation automode disabled to use in originating or answering a connection The options are mod Modulation Possib...

Page 17: ... operation is requested by the remote modem Uses wireline power level for initial cellular connection Default M1 Enables transmit power level adjustment during MNP10 link negotiation Uses the Mn value to establish initial cellular connection After connection the optimal power level is determined by the modem NOTE M1 should not be used with H2 M2 Enables transmit power level adjustment during MNP10...

Page 18: ... Command Enables or disables the V 32 compromise equalizer The parameter value if valid is written to S201 bit 5 This command can be used when the modem is attached to either a flat line or a cellular connection E0 Disables the equalizer E1 Enables the equalizer Default AT COMMAND RESULT CODES The modem responds to commands from the DTE and to activity on the line by signaling to the DTE in the fo...

Page 19: ...te AT command which controls the relevant bits in the S Register should be used to change the value Factory Defaults The factory default values are stored in ROM and are loaded into the active configuration at power up or by the ATZn command In addition the designated default profile is subsequently loaded and may change some of the factory default values The designated default profile can be chan...

Page 20: ...ter 0 255 ASCII 19 S34 S35 Reserved S36 LAPM Failure Control 7 S37 Line Connection Speed 0 S38 Delay Before Hang up 0 255 s 20 S39 Flow Control Bit Mapped 3 S40 General Bit Mapped 105 S41 General Bit Mapped 195 S42 S45 Reserved S46 Data Compression Control 138 S48 V 42 Negotiation Control 7 S82 LAPM Break Control 128 S86 Call Failure Reason 0 255 S91 PSTN Transmit Attenuation 0 15 dBm 10 S92 FAX T...

Page 21: ... Wait Time for Dial Tone Before Blind Dialing Sets the length of time in seconds that the modem will wait before starting to dial after going off hook when blind dialing The modem always pauses for a minimum of 2 seconds even if the value of S6 is less than two seconds Range 2 255 seconds Default 2 S7 Wait Time for Carrier After Dial For Silence or For Dial Tone After W Dial Modifier 1 Sets the le...

Page 22: ...be greater than the S9 value or else the modem disconnects before it recognizes the carrier Range 1 255 tenths of a second Default 14 1 4 seconds S11 DTMF Tone Duration Sets the duration of tones in DTMF dialing This value has no effect on pulse dialing Range 50 255 milliseconds Default 95 95 milliseconds S12 Escape Prompt Delay Defines the maximum period in fiftieths of a second allowed between r...

Page 23: ... requested T6 Bit5 RDL with self test 0 RDL not requested Default 1 RDL requested T7 Bit6 Local analog loopback LAL with self test 0 Not in progress Default 1 In progress T8 Bit7 Not used S17 Reserved S18 Test Timer Sets the length of time in seconds that the modem conducts a test commanded by Tn before returning to the command mode If this register value is zero the test will not automatically te...

Page 24: ... bit 1 1 or BSC Sync Character S19 bit 1 0 for Auto Sync operation see Q4 command Range 0 255 Default 0 S21 V 24 General Bit Mapped Options Status Indicates the status of command options Default 4 Bit0 Set by Jn command but ignored otherwise 0 J0 Default 1 J1 Bit1 Reserved Bit2 CTS behavior Rn 0 CTS tracks RTS R0 1 CTS always on R1 Default Bits3 4 DTR behavior Dn 0 D0 selected Default 1 D1 selecte...

Page 25: ...shake M3 Bits4 6 Limit result codes Xn 0 X0 4 X1 5 X2 6 X3 7 X4 Default Bit7 Reserved S23 General Bit Mapped Options Status Indicates the status of command options Default 54 Bit0 Grant RDL 0 RDL not allowed T5 Default 1 RDL allowed T4 Bits1 3 DTE Rate 0 0 300 bps 4 4800 bps 1 600 bps 5 9600 bps 2 1200 bps 6 19200 bps 3 2400 bps 7 38400 bps or higher Bits4 5 Assumed DTE parity 0 even 1 not used 2 ...

Page 26: ...a second for other modes Range 0 255 Default 5 S26 RTS to CTS Delay Sets the time delay in hundredths of a second before the modemturns CTS ON after detecting an OFF to ON transition on RTS when R0 is commanded Range 0 255 hundredths of a second Default 1 S27 Bit Mapped Options Status Indicates the status of command options Default 9 Bits0 1 3 Synchronous asynchronous selection Mn Qn 3 1 0 0 0 0 M...

Page 27: ...dial modifier in the dial string Range 0 255 10 ms intervals Default 0 disabled S30 Disconnect Inactivity Timer Sets the length of time in tens of seconds that the modem will stay on line before disconnecting when no data is sent or received Range 0 255 tens of seconds 0 2550 seconds Default 0 disabled S31 Bit Mapped Options Status Default 2 Bit0 Reserved Bit1 Controls auto line speed detection Nn...

Page 28: ...d 0 Automode 8 V 32 32bis 4800bps 1 3 300bps 9 V 32 32bis 9600bps 4 Reserved 10 V 32bis 12000bps 5 V 22 1200bps 11 V 32bis 14400bps 6 V 22bis 2400bps 12 V 32bis 7200bps 7 V 23 Bits5 7 Reserved S38 Delay Before Forced Hang Up This register 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...

Page 29: ...es K0 1 Enable extended services K1 2 Enable extended services K2 Bit2 Power Level Adjustment for Cellular Use Mn 0 Auto adjustment M0 Default 1 Force adjustment M1 Bits3 5 Break Handling Kn 0 K0 1 K1 2 K2 3 K3 4 K4 5 K5 Default Bits6 7 MNP Block size An 0 64 chars A0 1 128 chars A1 Default 2 192 chars A2 3 256 chars A3 S41 General Bit Mapped Options Status Indicates the status of the command opti...

Page 30: ...so desired Range 0 7 or 128 Default 7 S48 0 Disable negotiation bypass the detection and negotiation phases and proceed with LAPM S48 7 Enable negotiation Default S48 128 Disable negotiation bypass the detection and negotiation phases and proceed at once with the fallback action specified in S36 Can be used to force MNP S82 Break Handling Options S82 is for compatibility purposes only changing thi...

Page 31: ...eserved Bit5 Enable COMPRESSION result code Bit6 Reserved Bit7 Reserved S201 Cellular Transmit Level The bits in this register are set by the Mn and En commands to support cellular connections Default 32 Bits0 4 Initial Cellular Power Level Setting Bit5 Compromise Equalizer Enable Command Bit6 Reserved Bit7 Reserved DUMB MODE OF OPERATION On the back of the modem there is a two pin jumper located ...

Page 32: ...e following commands in your configuration string Originate End L1 H1 F1s7 200 user specific parameters W Answer End L1 H1 F0s7 25 user specific parameters W In the user specific section of each command string commands may be entered to match the modem to the specific requirements of the attached DTE Parameters such as synchronous operation asynchronous operation error correction compression and f...

Page 33: ...s D2 1200 bps D7 38 4 kbps D3 2400 bps D8 57 6 kbps D4 4800 bps D9 115 2 kbps PASSWORD AND CALLER ID SECURITY PROTECTION OPTIONS Password protection Caller ID protection and a combination of both protection methods are available as options in certain models Both security methods have been implemented for controlling access to the modem and the modem s remote configuration facility ACCESS CONTROL W...

Page 34: ...l unregistered callers may also be recorded When the audit trail becomes full it will automatically wrap around and begin overwriting the oldest entries AT E Erase Audit Trail This command will erase the current contents of the audit trail and initialize it to an empty state AT I nnnnnnnnnn l Add Caller ID and Level nnnnnnnnnn Caller ID 1 10 numeric characters l Level 1 normal logon only 2 special...

Page 35: ...VEL nnnnnnnnnn 1 nnnnnnnnnn 2 nnnnnnnnnn 1 AT Sn Enable Disable Password and Caller ID Protection Options Password Password Caller ID Log Telephone Number of Security Prompt Security All Unregistered Callers S0 OFF N A OFF N A S1 ON NO PROMPT OFF N A default S2 ON PROMPT OFF N A S3 OFF N A ON YES S4 ON NO PROMPT ON YES S5 ON PROMPT ON YES S6 OFF N A ON NO S7 ON NO PROMPT ON NO S8 ON PROMPT ON NO A...

Page 36: ...elephone circuit the device will return to an operational state OPTIONAL CONTACT CLOSURE FOR CONTROL OF OTHER DEVICES Models equipped with the optional power down sleep mode also include an internal relay with one set of normally open and one set of normally closed contacts This relay is rated for a maximum current of 1 ampere and a maximum voltage of 48 volts When the modem is in an operational s...

Page 37: ...dvance to give you ample time to maintain uninterrupted telephone service If you experience trouble with this telephone equipment please contact StarComm Products Inc at 714 899 7855 for information on obtaining service or repairs The telephone company may ask that you disconnect this equipment from the network until the problem has been resolved If your equipment continues to disrupt the network ...

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