Specifications

3GPP
3GPP TS 27.007 V6.3.0 (2003-
06)
13
8
Release 6
For the simplest MTs, and for backwards compatibility with existing communications software, it is possible to control
access to the VGCS and VBS using existing modem-compatible commands. A special dial-string syntax is defined for
use with the D command. This "modem compatible" mode of operation is described in subclause 11.2.
11.1 Commands specific to MTs supporting the VGCS and VBS
11.1.1 Accept an incoming Voice Group or Voice Broadcast Call +CAJOIN
Table 125: CAJOIN parameter command syntax
Command
Possible Response(s)
+CAJOIN=<service>, <GId> ,<GCA>
+CME ERROR: <err>
CAJOIN=?
Description
The execute command accepts an incoming or ongoing voice group or voice broadcast call.
See command +CALCC to get a list of current voice group or voice broadcast calls.
Defined Values
<GId>: a digit string that specifies the group identification for the incoming voice group or voice broadcast call.
<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.
11.1.2 Reject an incoming Voice Group or Voice Broadcast Call +CAREJ
Table 126: CAREJ parameter command syntax
Command
Possible Response(s)
+CAREJ=<service>, <GId>, <GCA>
+CME ERROR: <err>
+CAREJ=?
Description
The execute command rejects an incoming voice group or voice broadcast call indicated by RING or +CRING, the
command is applicable as long as the indication is pending.
If the call is once rejected the RING or +CRING indication is not repeated to TE although the call is still running and
notifications for the call are received.
See command +CALCC to get a list of current voice group or voice broadcast calls.
Defined Values
<GId>: a digit string that specifies the group identification for the incoming voice group or voice broadcast call.