Multi-Tech Systems MT5634SMI V.92 ユーザーズマニュアル
Chapter 4 – Voice Commands
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C)
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Chapter 4 – Voice Commands
Introduction
This chapter describes +V command support. The +V Command standard IS-101 Voice Control
Interim Standard for Asynchronous DCE (prepared by the TIA Technical Subcommittee TR29.2 on
Facsimile Digital Interface) defines the commands that a PC user may issue to configure and control
a voice/fax/data modem and the responses (result codes) that the voice/fax/data modem may issue in
response to those commands.
The +V commands and responses provide control of the following services:
Interim Standard for Asynchronous DCE (prepared by the TIA Technical Subcommittee TR29.2 on
Facsimile Digital Interface) defines the commands that a PC user may issue to configure and control
a voice/fax/data modem and the responses (result codes) that the voice/fax/data modem may issue in
response to those commands.
The +V commands and responses provide control of the following services:
•
Recording and playback of digitized voice.
•
Generation and detection of DTMF and other tones.
•
Switching between voice, fax, and data modes.
•
Control-related functions.
The Voice mode has three states, which correspond to the direction of voice data flow:
Voice command state (event reports only; no data transfers).
Voice transmit state (digitized, half-duplex voice data transfers from PC to modem).
Voice receive state, (digitized, half-duplex voice data transfers from modem to PC).
The modem supports three levels of voice service: Service Levels A, B, and C. Service Level A
provides the lowest level of services. Service level A performs operations and detects events as
follows: Voice transmit, Voice receive, and DTMF generation and Single tone generation. The
following events (Result Codes) are reported: 3, 4, 5, 6, 9, 10, 18, 19, 23, 25.
provides the lowest level of services. Service level A performs operations and detects events as
follows: Voice transmit, Voice receive, and DTMF generation and Single tone generation. The
following events (Result Codes) are reported: 3, 4, 5, 6, 9, 10, 18, 19, 23, 25.
Service Level B provides an optionally greater amount of services, providing DTMF and facsimile
calling tone detection during voice transmits in addition to Service Level A. Service Level B provides
event- reporting similar to Service Level A, but with added event reporting states (e.g., fax calling in
transmit state in addition to reporting in command state).
calling tone detection during voice transmits in addition to Service Level A. Service Level B provides
event- reporting similar to Service Level A, but with added event reporting states (e.g., fax calling in
transmit state in addition to reporting in command state).
Service Level C provides the highest service level with the addition of facsimile calling tone and Busy
detection during receives, Dial Tone detection, and double-tone detection. An example of event
detection in a Service Level C modem is shown below:
detection during receives, Dial Tone detection, and double-tone detection. An example of event
detection in a Service Level C modem is shown below:
AT+VEM=?
"C"
0A000100
0E601800
1A803840
OK