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56K V.92 Data, Fax, and Voice Chipset
Programmer’s Guide Intel Confidential 99
+VTS=m
(cont.)
none
DTMF and Tone Generation: (cont.)
c) This command can be used to send a period of silence in a tone string.
Use the following format:
AT+VTS=[ , ,<duration>]
AT+VTS=[ ]
For example: AT+VTS=[ , ,50]
This sends a 500-ms period of silence.
3) Single DTMF tones or hookflashes are sent enclosed in braces “{ }”. A duration
must be included, as the duration set in +VTD=n does not apply.
Use the following format:
AT+VTS={<DTMF or !>,<duration>}
For example: AT+VTS={2,30}
This command sends DTMF tone 2 with a duration of 300 ms.
For example: AT+VTS={!,50}
This command sends a hook flash with a duration of 500 ms.
Send multiple DTMF signals and tones by combining elements in a given
+VTS=m command string. For example:
AT+VTS={!,30}, 1, 2, [1000,1300,50], !, {*,6}, [1000], 9
This command line programs the following events:
1. Hook-flash with a duration of 300 ms.
2. Send DTMF 1 for the duration specified by +VTD command.
3. Send DTMF 2 for the duration specified by +VTD command.
4. Send tone pair 1000 Hz and 1300 Hz for a duration of 500 ms.
5. Hook-flash with a duration specified by +VTD command.
6. Send DTMF * for a duration of 60 ms.
7. Send tone 1000 Hz for a duration specified by the +VTD command.
8. Send DTMF 9 for the duration specified by +VTD command.
For example:
AT+VTS=1, [, ,50], 2, [ ], 9
This command line programs the following events:
1. Send DTMF 1 for the duration specified by +VTD command.
2. Play silence for a duration of 500 ms.
3. Send DTMF 2 for the duration specified by +VTD command.
4. Play silence for a duration specified by +VTD command.
5. Send DTMF 9 for the duration specified by +VTD command.
Table 6-1. Voice Mode Command Descriptions (Continued)