Multi-Tech Systems MT5600BA-V92 Error Control Commands, Command +EFCS Bit Frame Check Sequence

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Chapter 2 – AT Commands

<max_codewords_tx> The decimal number from 256 to 2048 that specifies the maximum number of code words which should be negotiated in the transmit direction. Default = 2048

<max_codewords_rx> The decimal number from 256 to 2048 that specifies the maximum number of code words which should be negotiated in the receive direction. Default = 2048

<max_string_tx> The decimal number from 32 to 255 (maximum string length).

Error Control Commands

Command: +EB

Break Handling in Error Control Operation

Description:

This extended-format compound parameter controls the break handling in V.42 operation.

 

It accepts three numeric subparameters:

 

+EB=[<break_selection>[,<timed>[,<default_length>]]]

Subparameters:

<break_seleIction>

Decimal number 0 specifying that break is to be ignored; i.e., not

 

 

signaled to remote DCE.

 

<timed>

Decimal number 0 specifying that any transmitted V.42 L-SIGNAL

 

 

will not indicate break signal length.

 

<default_length>

Decimal number 0 specifying that break is not delivered to the DTE.

Report Commands:

+EB?

Reports current or selected values.

 

+EB=?

Reports supported range of parameter values.

Command: +EFCS

32-bit Frame Check Sequence

Description:

This extended-format numeric parameter controls the use of the 16-bit or 32-bit frame

 

check sequence (FCS) option in V.42.

Values:

<value>

Decimal number 0 specifying the use of the 16-bit FCS specified in V.42.

 

+EFCS?

Reports current or selected values.

 

+EFCS=?

Reports supported range of parameter values.

Command: +ER

Error Control Reporting

Description:

This extended-format numeric parameter controls whether or not the intermediate result

 

code is transmitted from the modem to the DTE.

 

S95 bit 3 is reset to 0 for +ER=0 and is set to a 1 for +ER=1. The more recent setting

 

of+ER or S95 bit 3, and the W command setting, determines the actual error control result

 

code reporting (see S95 Parameter and W Command).

Values:

0, 1

 

 

0

= Error control reporting disabled (no +ER intermediate result code transmitted).

 

1

= Error control reporting enabled (+ER intermediate result code transmitted).

Default:

0

 

 

Report Commands:

+ER?

Reports current or selected values.

 

+ER=?

Reports supported range of parameter values.

Command: +ES

Error Control Selection

 

Description:

This extended-format command specifies the initial requested mode of operation when the

 

modem is operating as the originator, optionally specifies the acceptable fallback mode of

 

operation when the modem is operating as the originator, and optionally specifies the

 

 

acceptable fallback mode of operation when the modem is operating as the answerer.

 

 

It accepts three numeric subparameters:

 

 

+ES=[<orig_rqst>[,<orig_fbk>[,<ans_fbk>]]]

 

Subparameters:

<orig_rqst> Decimal number which specifies the initial requested mode of operation

 

 

when the modem is operating as the originator. The options are:

 

 

0

Initiate call with Direct Mode.

 

 

1

Initiate call with Normal Mode (also referred to as Buffered Mode) only.

 

2

Initiate V.42 without Detection Phase. If V.8 is in use, disable V.42

 

 

 

Detection Phase.

 

 

3

Initiate V.42 with Detection Phase. Default

 

 

4

Initiate MNP.

 

 

7

Initiate Frame Tunneling Mode when connection is complete and Data

 

 

Mode is entered.

 

 

 

Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273G)

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Contents MultiModem→ Copyright WarrantyRecord of Revisions TrademarksTable of Contents Introduction You must press Enter to send the command to the modemGeneral Commands AT CommandsCommand En Echo Command Mode Characters Command DS=n Dial Stored Telephone NumberCommand Hook Control Command Information RequestCommand ? Read Register Value Command Result Codes Enable/DisableCommand Tone Dialing Command Result Code FormatCommand Modem Reset Command Long Space DisconnectCommand Data Carrier Detect DCD Control Command Dn Data Terminal Ready DTR ControlCommand V.42bis Data Compression Command Modem-Initiated Flow ControlCommand Load Factory Settings Command V.22bis Guard Tone ControlCommand Sync/Async Mode Command Make/Break Dial RatioCommand Clear to Send CTS Control Command Data Set Ready DSR ControlCommand &Xn Synchronous Clock Source Command Store Current ConfigurationCommand Select Profile for Hard Reset Command &Zn=x Store Telephone NumberCommand Line Signal Level Command %En Line Quality MonitorCommand Line Signal Quality Command PCM Code SelectionCommand \Nn Error Correction Mode Selection Command \Kn Break ControlCommand \Vn Single Line Connect Message Report CommandsCommand +MS= Modulation Selection Country/Region of InstallationValues & Default SubparametersCommand Flash Memory Download Command MNP Extended ServicesCommand View Numbers in Blacklist Command View Delayed NumbersEscape Commands Command +++ Escape SequenceCommand *E Escape Remote Configuration Command +PCW=n Call Waiting Enable Modem Connection CommandsCommand +PIG=n PCM Upstream Ignore Command +PQC=n Quick Connect ControlForce Full Startup Procedure Next Connection Enable Quick Connect Profile SaveResult Code Callback Security Commands Caller ID CommandsCommand +DR Data Compression Reporting Data Compression CommandsCommand +DS Data Compression Command +DS44 V.44 Compression SelectCommand +EB Break Handling in Error Control Operation Error Control CommandsCommand +EFCS Bit Frame Check Sequence Command +ER Error Control ReportingCommand +ESR Selective Reject Command +ETBM Call Termination Buffer Management+ESR? Command +IFC DTE-Modem Local Flow Control DTE CommandsCommand +ILRR DTE-Modem Local Rate Reporting Reported RateCommand +IPR Fixed DTE Rate Modulation CommandCommand +MR Modulation Reporting Control +MCR Report SyntaxCommand -STE= Set Telephony Extension Call Control CommandBehavior in Data Mode +FCLASS=0 Behavior in Voice Mode +FCLASS=8Examples Test Command Command &T n Test CommandNo Carrier ATS86? Voice Commands Overview Voice CommandsConfiguration Commands Command +FCLASS=8 Select Voice ModeCommand +FLO Flow Control Command +VNH= Automatic Hang-up ControlCommand +VIP Voice Initialize All Parameters Voice CommandsCommand +VRX Start Modem Receive Record Command +VTS Send Voice TonesCommand +VGR Voice Gain Receive Record Gain Command +VTX Start Modem Transmit PlaybackCommand +VGT Voice Gain Transmit Playback Volume +VTS ExamplesCommand +VIT Voice Inactivity Timer DTE/Modem Command +VLS Analog Source/Destination Selection+VLS Example Table of +VLS Command Options Label Primitives Description Command +VRA Ringback Goes Away Timer+VSP=1 IntervalCommand +VRN Ringback Never Appeared Timer Command +VSD Silence Detection Quiet and SilenceCommand +VSM Compression Method Selection Command +VDR Distinctive Ring Command +VTD Beep Tone Duration TimerCommand +VDT Control Tone Cadence Reporting Before using it Description+VPR? RateCommand +VSP Speakerphone ON/OFF Speakerphone CommandsCommand +VGM Microphone Gain Command +VGS Speaker GainVoice Mode Shielded Codes Unformatted Form Reporting Caller IDShielded Hex Event Report Description Code Event Number 4 Extended Keypad Dtmf a Command +A8E V.8bis Operation Controls V.8bis CommandsCommand +A8I CI Signal Indication Default Values25bis Commands List Request of Forbidden Number 25bis ResponsesList Identification Number List Request of Stored NumberReg Unit Range Default Description RegistersRegisters Registers +MR, +ER,+DR, and W commands Result Codes Data FAX+DR None +DR ALT+ER None +ER LapmTerse Verbose Description Terse Verbose Description Example Setting Country/Regional CodesIndex Qcpc 46, 47, 48, 49 Index
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MT5600BA-V92 specifications

Multi-Tech Systems MT5600BA-V92 is a versatile communication device designed for efficient data transmission over telephone lines. It is highly regarded for its reliability and performance in various applications, including point-of-sale transactions, remote monitoring, and data acquisition. One of the key features of the MT5600BA-V92 is its ability to operate at data rates of up to 56 Kbps. This high-speed modem ensures rapid data transfer, making it suitable for businesses that require quick and efficient communication.

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