48
sub-elements corresponding to 2 frequencies in
Hz(0,or 200-3000) and a duration (ASCII decimal
in units of 100ms).
Varying DTMF Digits: This is represented by a substring enclosed in
curly braces("{}") within the parameter. Each
such substring consists of three sub-elements
corresponding to a DTMF digits(0-9,A-D,*,#),and
alternate durations in units of 100ms.
Parameters: The tone generation consists of elements in a list
with each element separated by commas.
Result Codes: OK Command to play tones on currently selected
device is accepted.
ERROR Command was not issued during Online Voice
Command Mode or string is grammatically
incorrect.
AT#VTX Voice Transmit
This action command can be issued if and only if the modem is in the
Online Voice Command Mode (indicated previously with the VCON message)
, and is the switch to Voice Transmit Mode. #VTX is used when a voice
file is to be transmitted to the line, speaker, or handset. The #VLS
command should have been previously issued to select the output source
.
Parameters: None
Result Codes: CONNECT When voice transmission by DTE can begin.
ERROR If #VLS=0 and output device not connected.
5.1 SVD or DSVD Related Command List (SVD or DSVD Models Only)
Command Description
AT-SMS Simultaneous Mode Selection
This command queries the simultaneous voice and data mode. The command
format is: AT-SMS=<mod>,<mini_speed>,<max_speed>,<symbol_rate>
where, <mod>: 0 Data only mode
1 DSVD mode
2 SVD mode
3 Automatic mode select
<mini_speed>: Minimum voice+data speed(bps); Default=2400
<max_speed>: Maximum voice+data speed(bps); Default=28800
<symbol_rate>: Symbol rate for SVD mode
0 Auto select (Default)
1 2400 bits/symbol
2 2743 bits/symbol
3 2800 bits/symbol
4 3000 bits/symbol
5 3200 bits/symbol
6 3429 bits/symbol
AT#VLS=n Voice Line Selection
where, n= 0 Telephone handset (Default)
5 Headset
6 Speakerphone
AT-SSE=n where, n= 0 Disable DSVD (DSVD only) (Default)
1 Enable
