Specifications

3GPP
3GPP TS 27.007 V6.3.0 (2003-
06)
13
9
Release 6
<GCA>: a digit string that specifies the group call area identification for the incoming voice group or voice
broadcast call.
<service> (tele-service):
17 voice group call
18 voice broadcast call
Implementation
Mandatory for a MT supporting AT commands only and VGCS or VBS is implemented.
11.1.3 Leave an ongoing Voice Group or Voice Broadcast Call +CAHLD
Table 127: CAHLD parameter command syntax
Command
Possible Response(s)
+CAHLD
+CME ERROR: <err>
+CAHLD=?
Description
The execute command forces the MT to leave the active voice group or voice broadcast call without terminating it. The
command is only applicable if the MT is in group receive mode. The MT returns to idle mode.
Implementation
Mandatory for a MT supporting AT commands only and VGCS or VBS is implemented.
11.1.4 Talker Access for Voice Group Call +CAPTT
Table 128: CAPTT parameter command syntax
Command
Possible Response(s)
+CAPTT=[<mode> [,<time>]]
+CME ERROR: <err>
+CAPTT?
+CAPTT: <mode>
+CME ERROR: <err>
+CAPTT=?
+CAPTT: (list of supported <mode>s), (list of
supported <time>s)
Description
The execute command emulates the Push To Talk function for VGCS talker access.
If the parameter <mode> is set to value "0" i.e. "RELEASED" the PTT key is assumed to be released immediately.
If the parameter <mode> is set to value "1" i.e. "PUSHED" the PTT key is assumed to be pushed immediately for the
period of <time> in seconds. If the command execution is repeated before the <time> expires the PTT timer will be
loaded with the new <time> value and the PTT key remains "PUSHED" for the period of new <time> in seconds.
If the parameter <mode> is set to value "2" i.e. "PUSHED" the PTT key is assumed to be pushed immediately for an
infinite period of time and can be released by <mode> value 0.
For <mode>=0 if the parameter <time> is issued it is ignored.
If the PTT timer expires after <time> seconds during <mode> "PUSHED" an unsolicited result code +CAPTT: 0 is issued
to the TE.
The read command returns the current <mode>.
The test command returns values supported as a compound value.
Defined Values