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MultiModem ® II MT5600BA-V92 MT5600BR-V92 MT5656ZDX MT5656ZDXV AT Commands Reference Guide.
Copyright and Technical Sup port Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 2 AT Commands Reference Guide Products: MT5600BA-V92, MT5600 BR-V92, MT5656ZDX, MT5656ZDX-V PN S000273G Copyright All rights reserved. This publi cation may not be reproduced.
Table of Contents Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 3 Table of Contents Chapter 1 – Introduction ...................................................................................................... ..................
Chapter 1 – Introduction Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 4 Chapter 1 – Int roduct ion AT commands are used to control the operat ion of your modem. They are so called b ecause each command must be preceded by the characters AT to get the ATtent ion of the modem.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 5 Cha pt er 2 – A T Co mman d s General C omm ands Command: AT Attention Code Values: n/a Description: The attention code precedes all command li nes e xcept A/ and the escap e sequence.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 6 Command: DS= n Dial Stored Telephone Number Values: n = 0–3 Default: none Description: Dials a number previousl y stored in directory numb er n b y th e &Zn= x command.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 7 Command: Q n Result Codes Enable/Disable Values: n = 0 or 1 Default: 0 Description: Q0 Enables result codes.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 8 Command: Y n Long Space Disconnect Note: For use with MT5600BA and MT5600 BR only. Values: n = 0 or 1 Default: 0 Description: Y0 Disables sending/responding to a long s pace break signal on disconn ect.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 9 Command: &E n Modem-Initiated Flow Control Note: For use with MT 5600BA and MT5600 BR o nly. Values: n = 3, 4, or 5 Default: 4 Description: &E3 Flow control disabled.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 10 Command: &P n Make/Break Dial Ratio Values: n = 0, 1, 2,3 Default: Varies by country/region Descriptio.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 11 Command: &W n Store Current Configuration Values: n= 0 or 1 Default: None Description: &W0 Stores current modem settings in nonvolatile memor y as Profile 0.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 12 Command: %E n Line Quality Monitor Values: n = 0, 1, or 2 Default: 2 Description: Controls whether or not .
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 13 Command: Kn Break Control Values: n = 0–5 Default: 5 Description: Controls the response of the modem to a br eak received fr om the computer, the remote modem, or the B command.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 14 Command: +GCI Country/Region of Installation Description: This extended s ynta x command sel ects and indicates the region/countr y of installation for the modem.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 15 Command: -K n MNP Exten ded Services Values: n = 0, 1, or 2 Default: 0 Description: Enables or disables conversion of a V.42 L APM connecti on to an MNP 10 connection.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 16 Escape Commands Command: +++ Escape Sequence Note: Use with MT5600B A and MT5600BR o n ly. Type +++ and wait for OK response. Then issue the follo wing com m and b y typing AT <CR> .
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 17 Modem Conne ct ion Commands Command: +PCW= n Call Waiting Enable Values: n = 0, 1, or 2 Default: 2 Description: Controls the action to be taken upon detec ti on of a call waiting tone in V.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 18 Command: -QCPC Force Full Startup Procedure Next Connection Description: This command causes the modem to use fu ll startup procedures on the next connectio n attempt regardless of the setting of the +PQC command.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 19 Cal ler ID Comm ands Command: +VCID= n Caller ID Selection Values: n = 0, 1, or 2 Default: 0 Description: Enables Caller ID detection an d config ures the reporting and presentati on of the Caller ID data that is detected after the first ring.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 20 Dat a Comp ress ion Com m an ds Command: +DR Data Compression Reporting Values: 0, 1 Default: 1 Descriptio.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 21 <max_codewo rds_tx> The decimal number from 256 to 2048 that speci fies the maximum number of code words which should be neg otiated in the transmit direction.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 22 <orig_fbk> Decimal number which specifies the acce pta ble fallback mode of operation when the modem is operating as the originator. 0 LAPM, MNP, or Normal Mo de error control o ption al.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 23 DTE Comm ands Command: +IFC DTE-Mode m Local Flow Control Description: This extended-format compou nd par ameter cont rols the operation of loc al fl o w control between the DTE and the mo dem during the data st ate when V.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 24 Command: +IPR Fixed DTE Rate Description: This numeric extended-format parameter sp ec ifies the data rate at which the modem will accept commands during onli ne operation.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 25 Cal l Cont ro l Command Command: -STE= Set Telephony Extension Description: This command enables/disabl es Line-In-Us e, Extension Pic k up, and R emote Hang up detection features.
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 26 Remote Hang-up (enabled by A T-STE=4, AT-STE=5, AT-STE=6, or A T-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 line pol arit y reversal .
Chapter 2 – AT Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 27 Automated system that needs to p eriodically use the line w hile gi ving the voice user the highest priority A common use for these features: An automated system that needs to perio dical l y use the line while giving the voice user the high est priorit y.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 28 Chapter 3 – V oice Commands Note: Voice commands apply to the MT5656ZDX-V only.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 29 Command: +VNH= Automatic Hang-up Control Description: This command enables or dis abl es automatic hang ups. Syntax: +VNH=<hook> Values: <hook> Decimal number correspond ing to the selected option.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 30 V oice C ommands These commands are listed in the order in which th e y might be used. Command: +VIP Voice Initialize All Parameters Description: This command causes the mo dem to initialize a ll voice parameters to their default values.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 31 +VTS Examples: Example 1 This example illustrates tone generati on without using any null elements. The command example is follo wed by a description of command execution.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 32 Command: +VIT Voice Inactivity Timer (DTE/Modem) Description: This command sets the modem’s initial value for the DT E/modem inactivity timer. Syntax: +VIT=<timer> Values: <timer> Decimal number corresponding to the time in units of 1.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 33 Table of +VLS Command O ptions Label Primitiv es Description +VTX +VRX +VSP=1 0 None DCE on-hook. Local phone co nnecte d to the line. 1 T DCE off-hook. DCE connected to the line.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 34 Command: +VRN Ringback Never Appeared Timer Description: This command sets the length of time the modem will wait between ringbac ks during call origination before the modem can assume th at the remote station has gone off-hook.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 35 Command: +VTD Beep Tone Duration Timer Description: This is a V.90 command. This command causes the mode m to set the default DTMF/tone generation duration.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 36 Command: +VPR Select DTE/Modem Interface Rate (Turn Off Autobaud) Description: This command selects the DTE/modem interface rate.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 37 Speak erphone Comm ands Command: +VSP Speakerphone ON/OFF Description: This command turns the speakerphone ON or OF F. Syntax: +VSP=<mode> Values: <mode> Decimal number corresponding to the sel ected opti on.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 38 Un f orma tte d F orm R e po r tin g – Ca ller I D The MultiModem does not display the Call er ID information if it detects a checksum error in the caller ID packet (either SDM or MDM) while in presentation mode.
Chapter 3 – Voice Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 39 Shielded Code Hex Event Report Description 8 (38) Event Number 4 (DTMF 8). 9 (39) Event Number 4 (DTMF 9). 0 (30) Event Number 4 (DTMF 0). A (41) Event Number 4 (Extended Ke ypad DTMF A).
Chapter 4 – V.8 / V.8bis Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 40 Chapter 4 – V . 8 / V .8bis Commands V.8 is a way V.34 modems negotiate connections features a nd options, and V.8bis is a start-up sequence for multimedia modems.
Chapter 5 – V.25bis Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 41 Cha pt er 5 – V .2 5 b i s C om man ds Note: These commands can be used with the MT5600BA only. The V.25bis commands control s ynchr ono us communication s bet ween the host and the modem using the HD LC or character-oriented protocol.
Chapter 5 – V.25bis Commands Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 42 Command: RLF List Request of Forbidden Number Description: Returns curr ent listing of Forbidden Numbers .
Chapter 6 – S-Registers Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 43 Chapter 6 – S -R eg isters Certain modem values, or parameters, are stored in memor y locations called S-Rregisters. Use the S command to read or alter the contents of the S-Registers.
Chapter 6 – S-Registers Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 44 S-Reg Unit Range Default Description S29 10 ms 0–255 70 On Hook Time: Sets the length o f time that the modem goes on-hook when it encounters a flash dial modifier (!) in the dialing string.
Chapter 6 – S-Registers Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 45 S-Reg Unit Range Default Description S95 decimal 0–255 0 Extended Result Codes C ontrol: A bit set to a 1 in this register, in conjunction with the W command, enables the corresponding result code.
Chapter 7 – Result Codes Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 46 Cha pt er 7 – R es ul t C od e s The modem responds to commands from the DT E and to activity on the line by signaling to the DT E in the form of result codes.
Chapter 7 – Result Codes Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 47 Terse Verbose Description 13 CONNECT 7200 Connected at 7200 bps and spee d reporting enabled. Modem connects to the line at7200 bps and DCE speed r eporti ng enabled.
Chapter 7 – Result Codes Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 48 Terse Verbose Description 64 CONNECT 28800 Connected at 2880 0 bps a nd line spe ed reporting enab led.
Chapter 7 – Result Codes Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 49 Terse Verbose Description 160 +MRR: 52000 Connected at 52000 bps. Modem conn ects to the line at 52000 bps and carrier reporting is enabled. (See S95, Xn.) 161 +MRR: 54000 Connected at 54000 bps.
Chapter 7 – Result Codes Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 50 Terse Verbose Description 196 +MRR: 29333 Connected at 29333 bps. Modem connects to the line at 29333 bps a nd carrier reporting is enabled. (See S95, Xn) 197 +MRR: 30667 Connected at 30667 bps.
Chapter 8 – Setting Country/Regiona l Codes Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 51 Chapter 8 – Sett ing Count r y/Regio nal Codes The Default Country /Regional Code is B5. If You Want to Change the Country /Regional Code 1.
Index Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 52 Inde x 3 32-bit Frame Check Sequence – +EF CS 21 A Analog Source/Destination Selectio n – +VLS 32 Answer – A 5 AT Comman.
Index Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 53 -QCPC – Force Full Star tup Procedure Next Connection 18 -QCPS – Enable Quick Connect Profile Save 18 Qn – Result Codes .
Index Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 54 Local Analog Loopback T est – &Tn 10 Long Space Disconnect – Yn 8 M Make/Break Dial Ratio – &Pn 10 Maximum MNP B.
Index Multi-Tech Systems, Inc. AT Co mmands Reference Guide (S000273G) 55 Voice Gain Receive (Record Gain) – +V GR 31 Voice Gain Transmit (Playback Volume) – + VGT 31 Voice Inactivity Timer (DTE/M.
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