ComStar SVD Owner’s Manual
54
Commands
Function (*voice mode only)
#VTD=i, j, k*
Queries and controls which types of tones can be detected
and reported to DTE via shielded codes in Voice Transmit,
Voice receive, and Online Voice Command modes, where
i, j, and k are three ASCII hexadecimal bit maps. The
default is 3F, 3F, 3F. The table below describes the
desired capabilities.
Bit
Description
0
0=disable DTMF tone capability
1= enable DTMF tone capability
1
1
0=disable V.25 1300 Hz calling tone capability
1=enable V.25 1300 Hz calling tone capability
1
2
0=disable T.30 1100 Hz fax calling tone capability
1=enable T.30 1100 Hz fax calling tone capability
1
3
0=disable V.25/T.30 2100 Hz answer tone capability
1=enable V.25/T.30 2100 Hz answer tone
capability
1
4
0=disable Bell 2225 Hz answer tone capability
1=enable Bell 2225 Hz answer tone capability
1
5
0=disable call progress tone and cadence capability
1=enable call progress tone and cadence
capability
1
6-7
Reserved
Notes:
1. The modem detects this tone/cadence,
and reports it via a shielded code to the DTE.
2. Tone detection is only performed when the
sampling rate is 7.2 kHz (see #VSR
command).
#VTM=0*
Disables timing mark placement
#VTM=10*
Enables the placement of <DLE><T> timing marks by the
DCE in the data stream during ADPCM recording
$$AS
n=ON
Turns AudioSpan ON, where
n is as defined below
$$AS
n=OFF
Turns AudioSpan OFF, where
n is as defined below
Voice device
Moderate voice
quality with
faster data
Best voice
quality with
slower data
Speakerphone
$$AS5 (default)
$$AS6
Telephone
$$AS3
$$AS4
Headset/handset
$$AS1
$$AS2