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8

The AT Commands

This chapter contains a description of all the AT commands that are
incorporated in your modem.  The commands are listed alphabetically,
with symbols in the following sequence:

&

*

/

% ''

–

Full instructions for entering AT commands are given in Section 3.3.

In addition to the commands that must have the AT prefix, there are two
which do not require the prefix or the terminator:

+++

Escape Sequence

You must enter this sequence when your modem is on-line and you
intend to use the main DTE to enter commands.

d+++d

where

 d

 is a period of silence defined in S-register

S12.  Its factory default is 0.5 seconds.

This sequence will produce the response 

OK

, put the modem into

command mode, and keep the current call live.

To return to the on-line mode, use the 

O

 command, or to clear the

call use 

H

.

Note that the 

+

 character can be changed by altering the contents

of S-register S2.

A/

Repeat Last Command(s)

This sequence will cause the modem to repeat the previous
command or command string.

X460-306851 Issue 1

8-1

Rev.0

Содержание Mayze 24

Страница 1: ...0 306851 Issue 1 0 1 Rev 2 Unit 15 Riverside Business Centre Victoria Street High Wycombe Bucks HP11 2LT Web www casecomms com Email sales casecomms com Tel UK 08700 263 740 Tel International 44 0 149...

Страница 2: ...with this declaration All PCB assemblies contain Electrostatic Sensitive Devices ESDs which may be permanently damaged if incorrectly handled This equipment must be handled in accordance with BS5783 c...

Страница 3: ...o get it operational for straightforward use on the PSTN PART 2 takes you step by step through the many features of the modem that allow it to carry out complex tasks in a variety of environments Thro...

Страница 4: ...a line feed Ctrl represents a control character hold down the CONTROL key whilst pressing the required character Commands entered at the keyboard are shown in Modern Bold font for example ATDP123 Res...

Страница 5: ...1 Controlling the Modem 2 2 2 2 2 Commands via the DTE Port 2 2 2 2 3 Commands via the Command Port 2 3 2 3 Installing the Standalone Modem 2 4 2 3 1 Power Supply Connection 2 4 2 3 2 DTE Port Connec...

Страница 6: ...ions 4 3 4 1 Factory Configurations 4 3 4 1 1 Introduction 4 3 4 1 2 Factory Configuration List 4 4 4 1 3 Factory Configuration Specifications 4 6 4 2 User Configurations 4 18 4 3 Loading a Configurat...

Страница 7: ...Diagnostic Facilities 7 1 7 1 Introduction 7 1 7 2 Test Details 7 2 7 2 1 Local Analogue Loopback 7 2 7 2 2 Remote Digital Loopback 7 3 7 3 Testing via the Front Panel 7 4 7 3 1 Local Analogue Loopbac...

Страница 8: ...e Modem C 6 C 3 UK Telephone Number Blacklist C 7 C 4 The Telephone Socket on the Modem C 8 C 5 Restrictions on use of S Registers C 9 D Technical Guide D 1 D 1 Introduction D 1 D 2 Standalone Modem D...

Страница 9: ...odem Front Panel 1 8 2 1 Standalone Modem Connections 2 5 D 1 Standalone Card Layout D 2 D 2 PSTN Terminal Block Connections D 3 D 3 Leased Line Terminal Block Connections D 3 D 4 Mains Voltage Select...

Страница 10: ...X460 306851 Issue 1 0 10 Rev 0...

Страница 11: ...PART 1 BASIC OPERATION Chapter 1 Introduction Chapter 2 Installation Chapter 3 Getting Started X460 306851 Issue 1 1 1 Rev 0...

Страница 12: ...X460 306851 Issue 1 1 2 Rev 0...

Страница 13: ...lephone numbers Numbers are stored and subsequently retrieved by using the numbered buttons on the front panel or by AT commands Automatic answering of incoming calls Disconnection of calls is always...

Страница 14: ...while the modem is in use Comprehensive V 54 test functions initiated by AT command or by front panel switches Modem Management The modem may be controlled by the Network 16 Controller Card or Network...

Страница 15: ...he modem is functioning correctly A flashing red light indicates that a test is being performed TXD Transmit Data A flashing light indicates that data is being transferred from the local DTE RXD Recei...

Страница 16: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 17: ...nel a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a COMMAND PORT a a a a a a a a a a a a a a a LINE a a a a a a a a a a a a a a...

Страница 18: ...way line cord fitted with a standard British Telecom plug to connect to the dial up network PHONE Socket for a telephone handset A telephone connected to this socket may be used to manually dial calls...

Страница 19: ...a a a a a a a a a a a a a a a a a a a a a a a a AN a a a a a a a a a a a a a a a a TE a a a a a a a a a a a a a a a a AL a a a a a a a a a a a a a a a a RD a a a a a a a a a a a a a a a a FB a a a a...

Страница 20: ...X460 306851 Issue 1 1 10 Rev 0...

Страница 21: ...A separate asynchronous command terminal with a V 24 RS 232 C serial port For the standalone modem a mains power socket outlet installed near the modem easily accessible and capable of supplying 1 0 a...

Страница 22: ...o send AT commands to it V 25bis commands are a special case discussed in Chapter 10 If your DTE works in asynchronous mode you can connect it to the modem s DTE port and enter commands via its keyboa...

Страница 23: ...parity and 1 stop bit 2 2 3 DTEs for Commands via the Command Port In this configuration your data DTE may be synchronous or asynchronous and will be connected to the modem s DTE port It should be set...

Страница 24: ...ide When you are sure the modem is correctly rated for your mains supply ensure that the modem is switched off 0 position then plug the mains lead into the mains supply Do not switch on until all othe...

Страница 25: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a MODEM a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 26: ...e connected via a cable to the modem s DTE interface connector A straight through 25 way cable as described for asynchronous data will be suitable for many synchronous terminals but there are some whi...

Страница 27: ...onnection has been used the mains plug must first be inserted in a power outlet to earth the modem before connecting the modem to the PSTN line All connections to the PSTN network must be via a standa...

Страница 28: ...ard and the rack system Connections to the command terminal are made from the back of the rack See the rack system manual for details of the pin allocations The format and speed for the command port i...

Страница 29: ...ashes on an error has been detected In this case recheck the installation if no mistakes are found refer to your supplier 8 Press the AL and TEST buttons to release them 2 5 2 Rackmount Modem 1 Fit th...

Страница 30: ...8 Press the AL and TE buttons to release them 9 Secure the modem in the rack X460 306851 Issue 1 2 10 Rev 0...

Страница 31: ...2 Switch on the modem The LED indicators on the front panel will reflect the status of the DTE interface TXD RXD and OH should be off 3 Load the default factory configuration 0 as follows Make sure a...

Страница 32: ...ommand language with simple working examples We recommend you to read this even if you have used AT commands before The AT commands are listed alphabetically in Chapter 8 3 2 2 The V 25bis Command Set...

Страница 33: ...ates that it has recognised the AT This sequence is useful for checking that the modem is responding correctly 3 3 2 Example Commands A useful command is C which will display a summary of your modem s...

Страница 34: ...Command Line If you make a mistake when entering a command line you can use the backspace key to reposition the cursor and you can then correct the mistake by overtyping 3 3 6 Command Option Numbers...

Страница 35: ...CR 3 4 2 Call Progress The standalone modem includes a loudspeaker to enable you to monitor the progress of the connection You will hear dial tone followed by silence If a modem answers the call it wi...

Страница 36: ...fer data to and from the remote DTE If the call has connected you to a data service a sign on message should appear on the screen For advice on what to do next consult the documentation for the servic...

Страница 37: ...ed so that it will automatically answer an incoming call after two rings and connect to the data DTE When the call is completed the modem will be ready to receive further calls or for you to make outg...

Страница 38: ...X460 306851 Issue 1 3 8 Rev 0...

Страница 39: ...r 4 Modem Configurations Chapter 5 Advanced Configuration Chapter 6 Operational Facilities Chapter 7 Diagnostic Facilities Chapter 8 The AT Commands Chapter 9 The S Registers Chapter 10 V 25bis Comman...

Страница 40: ...X460 306851 Issue 1 4 2 Rev 0...

Страница 41: ...tic dialling To simplify the task of configuring your modem you can choose one of the twelve pre configured factory configurations that cover standard applications They are described in this section S...

Страница 42: ...mmands active command port for AT 4 PSTN asynchronous operation DTR autodial active DTE port 5 PSTN synchronous operation DTR autoanswer active command port 6 PSTN synchronous operation V 25bis HDLC c...

Страница 43: ...2 1 The way these signals are used is controlled by the configuration in use In the following descriptions of the configurations each control signal is described as being in one of three modes These...

Страница 44: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 45: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 46: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 47: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 48: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 49: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 50: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 51: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 52: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 53: ...LED Q0 Interface Control DISABLED L1 Line Mode 2W LEASED R0 RTS CTS Control ON FOR DATA Q3 Operation Mode SYNC MANUAL DIAL U0 User Flow Control DISABLED S1 Switches ENABLED A0 RTS Timeouts DISABLED V2...

Страница 54: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 55: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 56: ...chieve this 1 Choose the factory configuration that is closest to the configuration you want see Section 4 1 and load it as described in Section 4 3 2 Amend the configuration with the appropriate comm...

Страница 57: ...actory 9 Factory 10 Factory 11 User 0 User 1 User 2 User 3 Out Out Out Out In In In In Out Out Out Out In In In In Out Out In In Out Out In In Out Out In In Out Out In In Out In Out In Out In Out In O...

Страница 58: ...a a a a View Config C a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 59: ...LL COMMAND SAVE COMMAND Factory 0 Factory 1 Factory 2 Factory 3 Factory 4 Factory 5 Factory 6 Factory 7 Factory 8 Factory 9 Factory 10 Factory 11 User 0 User 1 User 2 User 3 F0 F1 F2 F3 F4 F5 F6 F7 F8...

Страница 60: ...essed 3 Switch on the modem 4 Release the DATA button after 3 seconds The message RESTART will be displayed on a terminal connected to the command port This clears all user configurations and telephon...

Страница 61: ...em Mode Commands These commands are used to determine the kind of display produced by various functions and to activate deactivate various modes in which the modem may operate E Echo commands H Keyboa...

Страница 62: ...ng the interface are C DSR and DCD control I Constant speed interface Q DTR dialling control R RTS CTS control U User asynchronous commands U DTE rate W DSR control O DSR control while tests active Va...

Страница 63: ...f the modulation schemes of your modem Autosense will not work if the remote modem is set to operate at 600 bps V 22 If you do not require autosense you must select another option of the F command to...

Страница 64: ...Commands These commands are used to select suitable modem line characteristics C Cable equaliser G Guard tones G T 2 equaliser Y Break mode control R Manual retrain O Overspeed X460 306851 Issue 1 5...

Страница 65: ...reverting to PSTN operation L Line type A Originate or Answer mode D Carrier threshold Originate Answer Mode For leased line operation one modem must be set to originate mode and the other to answer...

Страница 66: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 67: ...a a a a Flow Control a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a Modem a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 68: ...he flow control OFF character is held in register S50 The factory default for S49 is 11 hex DC1 Ctrl Q and for S50 it is 13 hex DC3 Ctrl S These are the standard XON XOFF characters which are generall...

Страница 69: ...e new LAPM protocol It will also support the widely adopted MNP standard up to Class 4 LAPM protocol is preferred to MNP because it has the following advantages faster to connect faster response in in...

Страница 70: ...C1 the modem will try to use V 42bis or MNP5 depending on the setting of the E command and the capability of the remote modem In order to make effective use of data compression the asynchronous commu...

Страница 71: ...mand mode You must also ensure that the setting of command E allows remote configuration Then use the following commands ATDnnnnn Dial remote number AT X Up load a copy of the remote modem s current a...

Страница 72: ...er Card for further validation before the link is authenticated If the password or key and password is specified in the dial string using Ctrl G or Ctrl I then that password will override the stored p...

Страница 73: ...ite modem by entering the command ATS43 255 There are no special commands for the caller s modem To disable dialback operation enter the command ATS43 0 When dialback is disabled the modem will accept...

Страница 74: ...CDE in directory location 1 the sequence is ATN1 Z Ctrl N Callback No 1234 Ctrl R Password ABCDE CR OK To verify that the number has been stored you can use the N command The modem s response should b...

Страница 75: ...Mode The following commands allow you to select V 25bis mode so that you can enter V 25bis commands described in Chapter 10 V Select V 25bis command mode O Bisync character format X460 306851 Issue 1...

Страница 76: ...X460 306851 Issue 1 5 16 Rev 0...

Страница 77: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 78: ...ation of that call and then will automatically revert to its usual configuration 6 1 2 Retrieval There are three ways of recalling and dialling numbers stored in the directory By selecting one of the...

Страница 79: ...uration if required The commands concerned with dialling are D Dial a number modifiers apply see Section 6 2 4 DN Dial a stored number with changed configuration if required H Go on hook O Go on line...

Страница 80: ...must be set to Q2 for synchronous or Q5 for asynchronous operation 2 The DTE must control the DTR line raising it to request a connection 3 When the modem detects that the DTR line has been raised it...

Страница 81: ...nated by CR the modem abandons the call and displays the message ABORTED Note however that this feature can be disabled with the H command When dialling is complete the modem allows forty seconds to m...

Страница 82: ...his limit when in autodial mode that is when the U modifier has been included in the dial string The following conditions apply to this feature The blacklist operates on PSTN calls only Twenty blackli...

Страница 83: ...lling Back Replace Telephone Handset Re dial if dialback is not received within 2 minutes Carry out these instructions 3 The central site modem will now dial back using the stored number e g 0123 4567...

Страница 84: ...ine in that format If the command is set for auto detect format F0 the modem sends V 25 answer tone followed by V 22bis carrier If the proper response is not received the modem tries other formats in...

Страница 85: ...t sequences through the modem These are error checked and when the test is terminated the modem responds with the number of errors encountered Tests can be activated by The front panel buttons Section...

Страница 86: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 87: ...a a a M a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 88: ...y using the ENTER button Using an External Test Source 1 Press the AL button 2 The DCD indicator should light and the RUN indicator flash If the DSR indicator lights there is a fault on the modem 3 At...

Страница 89: ...est Source 1 Establish a connection with the remote modem which must be ITU T V 54 compatible 2 On the local modem depress the TEST button followed by the RDL button then release the TEST button 3 Att...

Страница 90: ...and AT T1 without self test or AT T8 with self test and press RETURN 4 If you selected T1 without self test you must key in a test message This should be echoed back to the screen via the modem s anal...

Страница 91: ...o accept an RDL test T4 5 Enter the command AT T6 without self test or AT T7 with self test and press ENTER 6 If you selected T6 without self test you must key in a test message This should be echoed...

Страница 92: ...test by returning pin 18 to the low 6 volts state 7 5 2 Remote Digital Loopback 1 The modem s internal links must first have been set as described in the Appendix entitled Technical Guide 2 Initiate t...

Страница 93: ...must enter this sequence when your modem is on line and you intend to use the main DTE to enter commands d d where d is a period of silence defined in S register S12 Its factory default is 0 5 seconds...

Страница 94: ...i streaming timeout A3 Loss of RTS and anti streaming timeouts A1 is normally only used with PSTN modems It causes the modem to disconnect when RTS goes low for a period held in register S10 A2 is nor...

Страница 95: ...ll B0 is used to clear the busied line and restore normal connections B Timeout Increments for T and A This command is used to select whether the value in S register S10 is measured in increments of 1...

Страница 96: ...Display Active Configuration This command displays your modem s active configuration on your terminal Examples of configuration screens are given in Section 4 1 3 C Cable Equaliser Any cable between t...

Страница 97: ...and e g ATD0123456789 To dial a number with modifiers select the required modifiers from the list below and incorporate them in the dialling sequence as instructed An example of a number with modifier...

Страница 98: ...ne This modifier is used where a second dialling tone is required following a prefix e g after 9 to obtain an outside line from a PABX ATDp W nn where p is the prefix and nn the number The maximum wai...

Страница 99: ...o a service For example Terminal ATDT9 0123456789 Dial telephone no Modem OK Terminal ATDT1234 Transmit touch tones 1234 Modem OK Terminal ATH Disconnect the phone call In this example the modem tone...

Страница 100: ...modem s configuration to become its new active configuration Issuing this command in PSTN mode will cause any call to be dropped E Echo Commands This command determines whether command characters ente...

Страница 101: ...configuration control over the remote modem A working example of this and the other remote configuration commands is given in Section 5 8 E Security Control This command is used to enable or disable t...

Страница 102: ...he modem accepts calls from the remote modem regardless of whether MNP error correction classes 2 5 is used or not If the modem fails to establish MNP error correction it reverts to its normal operati...

Страница 103: ...a transmission mode is used which is compatible with that of the remote modem contacted When the handshake is successful a connection is established If the modem is unable to connect at the specified...

Страница 104: ...ed Default F1 Fallback selected Fallback rate used G Guard Tones Normally only used in V 22bis mode this command enables you to select the guard tone frequency required by approval authorities G0 No g...

Страница 105: ...This code may be changed by using S register S38 to allow compatibility with certain software packages I1 Requests that a checksum is performed on your modem s firmware ROM The response shows the val...

Страница 106: ...ly operate at one speed or where the modem is used with a communications software package If this speed is different from that set by the F command you must enable flow control by using the K and U co...

Страница 107: ...ng call set up and off when carrier is detected M2 Speaker on M3 Speaker on during call set up It is off when carrier is detected and when dialling Default M Inactivity Data Monitor This command contr...

Страница 108: ...e immediately after the command but before the phone number and any instructions connected with the phone number Thus with the phone number alone remarks are situated as follows AT N1 Z Head Office 01...

Страница 109: ...d to factory configuration 1 F1 and you want it to change to user configuration 3 Z3 each time the modem dials 0123456789 the procedure is as follows Enter the command AT N1 Z 0123456789 Ctrl F A Conf...

Страница 110: ...ete Telephone Directory This command will display your complete telephone directory N Your telephone directory is displayed like this N0 T9 0123 456789 N1 Head Office T9 0123 987654 N3 Northern Office...

Страница 111: ...1 to 2 5 Default O1 Overspeed mode is ITU T 2 3 to 2 5 O DSR Control while Tests Active This command is used to select the state of DSR Data Set Ready while tests are active O0 DSR active in test mode...

Страница 112: ...e setting of the U command regardless of the setting of this command Q Quiet Mode This command determines whether response codes are sent to the DTE when commands are executed The full response code t...

Страница 113: ...oes not go high after the time defined in S register S25 When on line if DTR goes low the modem will wait for S25 time before the call is disconnected Q5 Asynchronous mode When DTR goes high the modem...

Страница 114: ...unicate with the modem R Manual Retrain This command will cause the modem to initiate a retrain to synchronise with the remote modem For V 22bis and V 22 modes only This is usually used only for test...

Страница 115: ...t whether response codes preceded by will be issued or not A table of these codes is given with the X command S0 Extra responses off S1 Extra responses on Default T Select Modem Test Operation This co...

Страница 116: ...T2 Constant carrier timeout enabled T3 Loss of carrier and constant carrier timeouts enabled Register S10 determines the length of the loss of carrier timeout Register S56 determines the length of th...

Страница 117: ...7 data even parity 2 stop U7 8 data no parity 1 stop U8 8 data no parity 2 stop U9 8 data odd parity 1 stop U10 8 data odd parity 2 stop U11 8 data even parity 1 stop U12 8 data even parity 2 stop U...

Страница 118: ...r i e whether response codes are expressed as words or numeric code Referred to as verbose terse or long short form Response codes are listed with the X command V0 Selects numeric terse codes V1 Selec...

Страница 119: ...a newly customised configuration from the active area Wn where n is the user configuration number 0 3 W DSR Control W0 Normal DSR control see C W1 DSR follows DTR This is used for hosts which on raisi...

Страница 120: ...The modem detects busy and dial tones and displays the connection speed X5 The modem detects busy and ringback tones and displays the connection speed X6 The modem detects busy dial and ringback tone...

Страница 121: ...rror correction at remote site 26 BLACKLIST 28 CONNECT 4800 Connected at 4800 bps 30 CONNECT 9600 Connected at 9600 bps 31 VOICE Voice call detected 32 RINGING Telephone ringing 33 DIAL TONE Dial tone...

Страница 122: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a X0 internal timing a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 123: ...r configuration to become the active configuration Zn where n is the user configuration number 0 3 Z Modify the Remote Configuration This comand allows you to alter the locally held copy of the remote...

Страница 124: ...X460 306851 Issue 1 8 32 Rev 0...

Страница 125: ...into three types Counters and other whole numbers Counters are absolute values A zero setting will usually disable the counter Timers often expressed as values from 0 to 255 Timers are stated in incre...

Страница 126: ...ollowing commands may be used to inspect and change the contents of S registers S Display S register summary Sn Display single S register setting Sn Set an S register to a value O S register output fo...

Страница 127: ...racter ASCII Range 0 127 Default 43H ASCII This register contains the code interpreted as the AT escape character S3 Carriage Return Character ASCII Range 0 127 Default 13H ASCII CR This register cont...

Страница 128: ...AT dialling sequence S9 DCD Detect Time Timer Range 0 255 seconds Default 10 seconds This register contains the time allowed to validate a connection S10 Carrier Loss to Hang up Delay Timer Range 1 1...

Страница 129: ...This number can be changed by entering a new number within the range indicated above S37 Data Inactivity Timer Timer Range 0 60 minutes Default 0 The modem can automatically disconnect calls if no dat...

Страница 130: ...econdary XOFF character used in dual flow control S43 Dialback Security Enable ASCII Range 0 or 255 Default 0 When S43 0 dialback security is disabled When S43 255 dialback security is enabled No othe...

Страница 131: ...onary size as follows Register Dictionary Size bytes 9 512 10 1024 11 2048 12 4096 A dictionary size of 4096 bytes is only available when one way compression is used C2 or C3 S94 V 42bis Maximum Strin...

Страница 132: ...X460 306851 Issue 1 9 8 Rev 0...

Страница 133: ...alues given above apply when using ASCII Characters should be sent as consecutive 8 bit words of 7 data bits and odd parity when using ASCII HDLC synchronous character oriented V 25bis commands must b...

Страница 134: ...Display delayed numbers RLF V 25bis command Display blacklisted numbers RLI V 25bis command Request identity number RLN V 25bis command Display telephone directory Description CIC Connect incoming ca...

Страница 135: ...d instructs the modem not to echo the commands back to the DTE PRI Program identity number PRIiii where iii is the identity number up to 20 characters PRN Store a telephone number and its modifiers a...

Страница 136: ...nal response Indicates a connection to a remote modem OFL Additional response Indicates a disconnect from line VAL V 25bis response Valid command entered Description CFI Call fail indication Indicates...

Страница 137: ...DPSTTT EOL See the note following LSN for an explanation of the format LSF List of blacklisted numbers This is the response to the RLF command it is only relevant when the U dial modifier has been use...

Страница 138: ...delayed call is F to represent a blacklisted call P is the delay time in minutes for a delayed call S is the number of dialled attempts that have failed TTT is the time that a blacklisted call has to...

Страница 139: ...Threshold 6 dBm to 43 dBm Operation 2 wire synchronous or asynchronous Output level Selectable 4 dBm to 15 dBm UK versions set to 9 dBm for PSTN operation or 13 dBm for leased line operation Data Inpu...

Страница 140: ...25 compliant Busy Busy out via AT command or loss of DTR Disconnect Call clear selectable on loss of DTR and or no carrier for n seconds and or constant carrier for n seconds and or by loss of data ac...

Страница 141: ...V Rackmount power via the rack Typical power consumption 11 watts Environment Temperature operating 5 C to 40 C storage 25 C to 55 C Relative humidity 5 to 95 non condensing Altitude to 3000 metres Di...

Страница 142: ...X460 306851 Issue 1 A 4 Rev 0...

Страница 143: ...andalone modem has two serial ports The DTE port is used to pass user data and may also be used to enter AT commands The command port is used to enter AT commands only The rackmount ports are describe...

Страница 144: ...D From Data 4 CA 105 5 CB 106 6 CC 107 20 CD 108 2 22 CE 125 8 CF 109 Request To Send RTS To Control Clear To Send CTS From Control Data Set Ready DSR From Control Data Terminal Ready DTR To Control R...

Страница 145: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a DTE If the modem is connected to a multiplexer channel the cable should be a synchronous crossover type such as part no X400 400111 up to 2 metr...

Страница 146: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 147: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 148: ...X460 306851 Issue 1 B 6 Rev 0...

Страница 149: ...o comply with the approvals regulations For convenience it is split into a number of sections as shown below C 1 Statutory Instructions for UK Users C 2 Installing the Standalone Modem C 3 UK Telephon...

Страница 150: ...by way of other apparatus of ports marked with Warning Connect only apparatus complying with BS6301 to these ports with ports not so marked may produce hazardous conditions on the BT network Advice sh...

Страница 151: ...ge drop of 0 2 volts at a line current of 40mA m That for statutory purposes apparatus connected to the PSTN via a Relevant Branch System RBS is treated as if connected directly to the PSTN Users shou...

Страница 152: ...originating end x Call progress monitor standalone version only xi Series connection standalone version only xii Modem Any other usage will invalidate the approval of the apparatus if as a result it...

Страница 153: ...telephone network PSTN Contact your supplier Postcard for Requesting Socket Installation A postcard is supplied with this manual for requesting installation of British Telecom sockets for connection I...

Страница 154: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 155: ...ntered on the blacklist i After one unsuccessful connection attempt ten seconds will elapse before a second dial command for the same number can be executed ii After a second unsuccessful connection a...

Страница 156: ...us voltages generated by the telephone network Instructions for connecting a telephone to this socket are given in the Appendix entitled Technical Guide If the telephone connection is removed you must...

Страница 157: ...aximum setting is reverted to S REGISTER MINIMUM VALUE MAXIMUM VALUE S6 Wait for dialtone S7 Wait for carrier S8 Pause time for comma S36 Max No of dial attempts 4 seconds 0 seconds 4 seconds 1 attemp...

Страница 158: ...X460 306851 Issue 1 C 10 Rev 0...

Страница 159: ...qualified and competent engineers In order to comply with national regulations it will be necessary to re test the modem to ensure it meets the requirements of BABT document 340 following any modifica...

Страница 160: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a DTE Interface a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 161: ...gure D 3 Figure D 3 Leased Line Terminal Block Connections a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 162: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 163: ...emove the telephone from the socket dismantle the modem by the procedure described in 1 and 2 above Ensure that you replace the blanking plug once you have removed the telephone cable then reassemble...

Страница 164: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a LK 6 a a a a a a a a a a a a a a a a a a a a LK 8 a a a a a a a a a a a a a a a a a a a a LK 1 a a a a a a a a a a a a a a a a a a a a LK 3...

Страница 165: ...a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a...

Страница 166: ...X460 306851 Issue 1 D 8 Rev 0...

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