Multi-Tech Systems MT5600BA-V92 manual V.8bis Commands, Command +A8E V.8bis Operation Controls

Page 40

Chapter 4 – V.8 / V.8bis Commands

Chapter 4 – V.8 / V.8bis Commands

V.8 is a way V.34 modems negotiate connections features and options, and V.8bis is a start-up sequence for multimedia modems.

Command: +A8E

V.8 and V.8bis Operation Controls

Description:

This command is defined for two conditions: as a parameter while the modem is on-hook,

 

and as an action command while the modem is off-hook. If enabled, V.8 negotiation does

 

not preclude simultaneous implementation of other negotiation means (e.g., V.8bis, V.18,

 

V.32bis Annex A). It 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-hook to

 

(re)start V.8 or V.8bis negotiation.

 

Example: If initial V.8 negotiation fails, but subsequent T.30 negotiation indicates V.8

 

capability, this command may be used to initiate V.8 negotiation.

 

Syntax: +A8E=<v8o>,<v8a>,<v8cf>[,<v8b>][,<cfrange>][,<protrange>]

Values:

<v8o>

Decimal number which enables/disables issuance of +A8x indications

 

 

during modem-controlled V.8 origination negotiation.

 

 

1

Enable DCE-controlled V.8 origination negotiation without +A8x

 

 

 

indications. Default

 

 

6

Enable DCE-controlled V.8 origination negotiation with +A8x

 

 

 

indications.

<v8a>= Decimal number which enables/disables issuance of +A8x indications during modem-controlled V.8 answer negotiation.

1Enable DCE-controlled V.8 answer negotiation without +A8x indications. Default

5Enable DCE-controlled V.8 answer negotiation with +A8x indications.

<v8cf>= Set the V.8 CI signal call function to the hexadecimal octet XY

00Default

C1

 

<v8b>=

Decimal number which enables/disables V.8bis negotiation.

 

 

0

Disable V.8bis negotiation.

 

 

1

Enable V.8bis negotiation. Default

 

<cfrange>= “<string of values>“. Applicable only for <v8a>=5. Not supported.

 

< protrange >= <string of values>“. Applicable only for <v8a>=5. Not supported.

Default Values:

1,1,00,1,0,0

 

 

The ATD and ATA commands behave as specified in V.250, and +A8n indications are not

 

generated by the modem. For subparameter values <v8o>=6 and <v8a>=5, +A8I

 

indications are issued during the V.8session to notify the DTE when the relevant V.8

 

signals are received.

 

Report Commands:

+A8E?

Reports current or selected values.

 

+A8E=? Reports supported range of parameter values.

Command: +A8I

CI Signal Indication

Description:

This indication is issued by an answering modem, if +A8E,<v8a> .0, to indicate detection

 

of a V.8 CI signal and report the recovered Call Function octet(s).

 

Indication Syntax: +A8I:<v8cf><CR>

Values:

<v8cf>

A hexadecimal code octet representation of those Call Function octet(s).

 

 

+A8I:0 indicates that the modem timed out waiting for CI.

Example:

+A8I:0

The modem timed out waiting for CI.

 

+A8I:X

YYY

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

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Contents MultiModem→ Warranty CopyrightRecord of Revisions TrademarksTable of Contents You must press Enter to send the command to the modem IntroductionAT Commands General CommandsCommand DS=n Dial Stored Telephone Number Command En Echo Command Mode CharactersCommand Hook Control Command Information RequestCommand Result Codes Enable/Disable Command ? Read Register ValueCommand Tone Dialing Command Result Code FormatCommand Long Space Disconnect Command Modem ResetCommand Data Carrier Detect DCD Control Command Dn Data Terminal Ready DTR ControlCommand Modem-Initiated Flow Control Command V.42bis Data CompressionCommand Load Factory Settings Command V.22bis Guard Tone ControlCommand Make/Break Dial Ratio Command Sync/Async ModeCommand Clear to Send CTS Control Command Data Set Ready DSR ControlCommand Store Current Configuration Command &Xn Synchronous Clock SourceCommand Select Profile for Hard Reset Command &Zn=x Store Telephone NumberCommand %En Line Quality Monitor Command Line Signal LevelCommand Line Signal Quality Command PCM Code SelectionCommand \Kn Break Control Command \Nn Error Correction Mode SelectionCommand \Vn Single Line Connect Message Report CommandsCountry/Region of Installation Command +MS= Modulation SelectionValues & Default SubparametersCommand MNP Extended Services Command Flash Memory DownloadCommand View Numbers in Blacklist Command View Delayed NumbersCommand +++ Escape Sequence Escape CommandsCommand *E Escape Remote Configuration Modem Connection Commands Command +PCW=n Call Waiting EnableCommand +PIG=n PCM Upstream Ignore Command +PQC=n Quick Connect ControlEnable Quick Connect Profile Save Force Full Startup Procedure Next ConnectionResult Code Caller ID Commands Callback Security CommandsData Compression Commands Command +DR Data Compression ReportingCommand +DS Data Compression Command +DS44 V.44 Compression SelectError Control Commands Command +EB Break Handling in Error Control OperationCommand +EFCS Bit Frame Check Sequence Command +ER Error Control ReportingCommand +ETBM Call Termination Buffer Management Command +ESR Selective Reject+ESR? DTE Commands Command +IFC DTE-Modem Local Flow ControlCommand +ILRR DTE-Modem Local Rate Reporting Reported RateModulation Command Command +IPR Fixed DTE RateCommand +MR Modulation Reporting Control +MCR Report SyntaxCall Control Command Command -STE= Set Telephony ExtensionBehavior in Data Mode +FCLASS=0 Behavior in Voice Mode +FCLASS=8Examples Command &T n Test Command Test CommandNo Carrier ATS86? Voice Commands Voice Commands OverviewConfiguration Commands Command +FCLASS=8 Select Voice ModeCommand +VNH= Automatic Hang-up Control Command +FLO Flow ControlVoice Commands Command +VIP Voice Initialize All ParametersCommand +VRX Start Modem Receive Record Command +VTS Send Voice TonesCommand +VTX Start Modem Transmit Playback Command +VGR Voice Gain Receive Record GainCommand +VGT Voice Gain Transmit Playback Volume +VTS ExamplesCommand +VLS Analog Source/Destination Selection Command +VIT Voice Inactivity Timer DTE/Modem+VLS Example Command +VRA Ringback Goes Away Timer Table of +VLS Command Options Label Primitives Description+VSP=1 IntervalCommand +VSD Silence Detection Quiet and Silence Command +VRN Ringback Never Appeared TimerCommand +VSM Compression Method Selection Command +VTD Beep Tone Duration Timer Command +VDR Distinctive RingCommand +VDT Control Tone Cadence Reporting Before using it DescriptionRate +VPR?Speakerphone Commands Command +VSP Speakerphone ON/OFFCommand +VGM Microphone Gain Command +VGS Speaker GainUnformatted Form Reporting Caller ID Voice Mode Shielded CodesShielded Hex Event Report Description Code Event Number 4 Extended Keypad Dtmf a V.8bis Commands Command +A8E V.8bis Operation ControlsCommand +A8I CI Signal Indication Default Values25bis Commands 25bis Responses List Request of Forbidden NumberList Identification Number List Request of Stored NumberRegisters Reg Unit Range Default DescriptionRegisters Registers +MR, +ER,+DR, and W commands Result Codes FAX Data+DR ALT +DR None+ER None +ER LapmTerse Verbose Description Terse Verbose Description Setting Country/Regional Codes ExampleIndex Qcpc 46, 47, 48, 49 Index
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