NAL RESEARCH CORPORATION A3LA-R, Руководство пользователя

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A3LA-R-MIL-MOD User Guide Version B
Document Number: 451-93156-001A 121 of 159
2 Waiting for user to answer MT call
3 User accepted MT call, completing establishment
4 Fully active
5 Call is part of fully active multiparty call
6 Call held
7 Call is part of held multiparty call
8 Multiparty (conference) build requested
9 Hold requested
10 Multiparty hold requested
11 Retrieve requested
12 Multiparty retrieve requested
13 Call is being removed (split) from multiparty call
14 Reestablishing
15 Releasing
<active index>,<held index>:
0..5 Index of call record
255 No call record
The +XCSI message extends the information available in the +DPLCI announcement. It
will be sent whenever there is a non-data call state change in the A3LA-R’ internal Call
Control (MMICC) state machines, including during a voice call session (possibly with
multiple concurrent calls) when any call becomes held/active/waiting. There will be
no +XCSI announcements during a data call, but there could be one after the data call
has finished, when the overall call state goes idle.
The call index fields identify the call records for the active and held calls. Note that
the A3LA-R implementation allows at most one held call at a time. The index values
can be used in the “<1x>” and “<2x>” options of the AT+CHLD command.