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LZT 123 7263 R1C
7. Data - HSCSD

7.1 AT+CHSC HSCSD Current Call Parameters

Returns information about the current HSCSD call parameters, i.e. the

current number of receive and transmit timeslots, air interface user rate

and channel coding.

Description Command Possible Responses
Show the current
setting
AT+CHSC • +CHSC:<rx>,<tx>,<aiur>,<coding>
+ CME ERROR: <err>
•OK
•ERROR
Show if the
command is
supported
AT+CHSC=? +CME ERROR: <err>
•OK
•ERROR
<rx> Description
0No HSCSD call is active. See also note below
1The number of receive timeslots currently in use is 1
2The number of receive timeslots currently in use is 2
<tx> Description
0No HSCSD call is active. See also note below
1The number of transmit timeslots currently in use is 1
<aiur> Description
0No HSCSD call is active. See also note below.
1Current air interface user rate is 9.6kbits/s
3Current air interface user rate is 19.2kbits/s
<coding> Description
0No HSCSD call is active. See also note
4Current channel coding is 9.6 kbits/s (TCH/F9.6)
8Current channel coding is 14.4kbits/s (TCH/F14.4)