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Chapter 3 – Voice Commands
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F) 28
Chapter 3 – Voice Commands
Note: Voice commands apply to the MT5656ZDX-V only.
Voice Commands Overview
Non-Voice Commands For Configuring the Voice Function
+FCLASS Set Mode
+VCID Caller ID
+VNH Automatic Hang-up Control
+FLO Flow Control
Voice Commands Description
+VIP Voice Initialize All Parameters
+VRX Start modem Receive (Record)
+VTS Voice Tone Send (Send single frequency or DTMF)
+VTX Start modem Transmit (Playback)
+VGR Voice Gain Receive (Record Gain)
+VGT Voice Gain Transmit (Playback Volume)
+VIT Voice Inactivity Timer (DTE/Modem)
+VLS Analog Source/Destination Selection
+VRA Ringback Goes Away Timer
+VRN Ringback Never Appeared Timer
+VSD Silence Detection (QUIET & SILENCE)
+VSM Compression Method Selection
+VTD Beep Tone Duration Timer
+VDR Distinctive Ring
+VDT Control Tone Cadence Reporting
+VPR Select DTE/modem Interface Rate (Turn off autobaud)
Command Speakerphone
+VSP Speakerphone ON/OFF
+VDX Speakerphone Duplex Mode
+VGM Microphone Gain
+VGS Speaker Gain
Configuration Commands
These configuration commands must be set before using the Voice Commands.
Command: +FCLASS=8 Select Voice Mode
+FCLASS=8 selects the Voice Mode. The Voice Mode commands and responses described in this
section are applicable when command +FCLASS=8. (See the Generic Modem Control section for
the definition of the FCLASS command.)
Command: +VCID Caller ID
See +VCID for Caller ID in Chapter 2.