Multi-Tech Systems MT5600BA-V92 Modem Connection Commands

Chapter 2 – AT Commands

Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273G) 17

Modem Connection Commands

Command: +PCW=n Call Waiting Enable

Values: n = 0, 1, or 2

Default: 2

Description: Controls the action to be taken upon detection of a call waiting tone in V.92 mode.

Values specified by this command are not modified when an AT&F command is issued.

+PCW=0 Toggles V.24 Circuit 125 and collects Caller ID if enabled by +VCID.

+PCW=1 Hangs up.

+PCW=2 Ignores V.92 call waiting.

+PCW=? Displays the allowed values.

+PCW? Displays the currrent values.

Command: +PIG=n PCM Upstream Ignore

Values: n = 0 or 1

Default: 1

Description: Controls the use of PCM upstream during V.92 operation. PCM upstream allows faster

upload speeds to a V.92 server.

+PIG=0 Disables PCM upstream.

+PIG=1 Enables PCM upstream.

+PIG=? Displays the allowed values.

+PIG? Displays the current values.

Command: +PQC=n Quick Connect Control

Values: n = 0, 1, 2, or 3

Default: 3

Description: Controls the V.92 shortened Phase 1 and Phase 2 startup procedures (Quick Connect).

When line conditions are stable, quick connect results in shortened connect times;

however, significant fluctuations in line conditions from call to call can result in longer

connect times, in which case it may be advisable to disable quick connect.

+PQC=0 Enables Short Phase 1 and Short Phase 2 (Quick Connect).

+PQC=1 Enables Short Phase 1.

+PQC=2 Enables Short Phase 2.

+PQC=3 Disables Short Phase 1 and Short Phase 2.

+PQC=? Displays the allowed values.

+PQC? Displays the current values.

Command: +PSS Use Short Sequence

Description: This command causes a calling modem to force either a V.92 short or full startup

sequence as defined by the +PQC command on the next and subsequent connections.

Syntax: +PSS=<value>

Values: <value> Decimal number corresponding to the selected sequence.

0 The modems decide whether or not to use the short startup procedures.

The short startup procedures can only be used if enabled by the +PQC

command. Default

1 Reserved.

2 Forces the use of the full startup procedures on the next and subsequent

connections independent of the setting of the +PQC command.

Result Codes: OK 0 - 2 in V.92 Mode (+MS=V.92)

ERROR Otherwise

Report Commands: +PSS? Reports selected values.

+PSS=? Reports supported range of parameter values.

Contents

Main MultiModem II AT Commands Reference Guide Page Table of Contents Chapter 1 Introduction Chapter 2 AT Commands General Commands Command: AT Attention Code Command: Enter Key Command: DS=n Dial Stored Telephone Number Command: En Echo Command Mode Characters Command: Hn Hook Control Command: In Information Request Command: L5 Lists Current Operating Parameters Command: Qn Result Codes Enable/Disable Command: Sr Select Register Command: Sr=n Set Register Value Command: Sr? Read Register Value Command: T Tone Dialing Command: Yn Long Space Disconnect Command: Zn Modem Reset Command: &Cn Data Carrier Detect (DCD) Control Command: &Dn Data Terminal Ready (DTR) Control Command: &En V.42 Error Correction Modes Command: &En Modem-Initiated Flow Control Command: &En V.42bis Data Compression Command: &Fn Load Factory Settings Command: &Gn V.22bis Guard Tone Control Command: &Kn Flow Control Selection Command: &Pn Make/Break Dial Ratio Command: &Qn Sync/Async Mode Command: &Rn Clear to Send (CTS) Control Command: &Sn Data Set Ready (DSR) Control Command: &Tn Local Analog Loopback Test Command: &Wn Store Current Configuration Command: &Xn Synchronous Clock Source Command: &Yn Select Profile for Hard Reset Command: &Zn=x Store Telephone Number Command: %Cn Data Compression Control Command: %En Line Quality Monitor Command: %L Line Signal Level Command: %Q Line Signal Quality Command: %U PCM Code Selection Command: \An Maximum MNP Block Size Command: \Kn Break Control Command: \Nn Error Correction Mode Selection Command: \Vn Single Line Connect Message Command: +FCLASS= Set Current Fax Class Command: +GCI Country/Region of Installation Command: +MS= Modulation Selection Command: -Kn MNP Extended Services Command: ** Flash Memory Download Command: *B View Numbers in Blacklist Command: *D View Delayed Numbers Command: $Dn DTR Dialing Escape Commands Command: +++ Escape Sequence Command: *E Escape Remote Configuration Modem Connection Commands Command: +PCW=n Call Waiting Enable Command: +PIG=n PCM Upstream Ignore Command: +PQC=n Quick Connect Control Command: +PSS Use Short Sequence Command: -QCPC Force Full Startup Procedure Next Connection Command: -QCPS Enable Quick Connect Profile Save Caller ID Commands Command: +VCID=n Caller ID Selection Command: +VRID= Caller ID Report Retrieved Callback Security Commands Note: Callback Security Commands apply to the MT5600BA and MT5600 BR only. Data Compression Command s Command: +DR Data Compression Reporting Command: +DS Data Compression Command: +DS44 V.44 Compression Select Error Control Commands Command: +EB Break Handling in Error Control Operation Command: +EFCS 32-bit Frame Check Sequence Command: +ER Error Control Reporting Command: +ES Error Control Selection Command: +ESR Selective Reject Command: +ETBM Call Termination Buffer Management DTE Commands Command: +IFC DTE-Modem Local Flow Control Command: +ILRR DTE-Modem Local Rate Reporting Command: +IPR Fixed DTE Rate Modulation Command Command: +MR Modulation Reporting Control Call Control Command Command: -STE= Set Telephony Extension Page Test Command Command: &Tn V.54 Test Command Chapter 3 Voice Commands Note: Voice commands apply to the MT5656ZDX-V only. Voice Commands Overview Configuration Commands Command: +FCLASS=8 Select Voice Mode Command: +VNH= Automatic Hang-up Control Command: +FLO Flow Control Voice Commands Command: +VIP Voice Initialize All Parameters Command: +VRX Start Modem Receive (Record) Command: +VTS Send Voice Tone(s) Command +VTX Start Modem Transmit (Playback) Command: +VGR Voice Gain Receive (Record Gain) Command: +VGT Voice Gain Transmit (Playback Volume) Command: +VIT Voice Inactivity Timer (DTE/Modem) Command: +VLS Analog Source/Destination Selection Command: +VRA Ringback Goes Away Timer Command: +VRN Ringback Never Appeared Timer Command: +VSD Silence Detection (Quiet and Silence) Command: +VSM Compression Method Selection Command: +VTD Beep Tone Duration Timer Command: +VDR Distinctive Ring Command: +VDT Control Tone Cadence Reporting Command: +VPR Select DTE/Modem Interface Rate (Turn Off Autobaud) Speakerphone Commands Command: +VSP Speakerphone ON/OFF Command: +VGM Microphone Gain Command: +VGS Speaker Gain Unformatted Form Reporting Caller ID Voice Mode Shielded Codes Page Chapter 4 V.8 / V.8bis Commands Command: +A8E V.8 and V.8bis Operation Controls Command: +A8I CI Signal Indication Chapter 5 V.25bis Commands Note: These commands can be used with the MT5600BA only. Command: CIC Connect Incoming Call Command: DIC Disregard Incoming Call Command: CRNs Call Request Number V.25bis Responses Chapter 6 S-Registers Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273G) 43 Chapter 6 S-Registers S-Registers S-Reg Unit Range Default Description Page Page Chapter 7 Result Codes Page Page Page Page Chapter 8 Setting Country/Regional Codes Index 3 A B C D E F M O P Q R