User guide

Developers guidelines | AT commands
101 June 2010
AT+CHSC HSCSD current call parameters (ver. 2)
Description: This execution command returns information about the current HSCSD
call parameters:
• The current number of receive and transmit time slots
• Air interface user rate
• Channel coding
Execution
command: AT+CHSC
Execution command
response: +CHSC:<rx>,<tx>,<aiur>,<coding>
Test command: AT+CHSC=? Shows if the command is supported.
Parameters:
<rx>:
<rx> Description
0 No HSCSD call is active. See also note below
1 The number of receive time slots currently in use is
1
2 The number of receive time slots currently in use is
2
3 The number of receive time slots currently in use is
3
4 The number of receive time slots currently in use is
4
<tx>:
<tx> Description
0 No HSCSD call is active. See also note below
1 The number of transmit time slots currently in use is
1
<aiur>:
<aiur> Description
0 No HSCSD call is active. See also note below
1 Current air interface user rate is 9.6 Kbps
2 Current air interface user rate is 14.4 Kbps
3 Current air interface user rate is 19.2 Kbps
4 Current air interface user rate is 28.8 Kbps
5 Current air interface user rate is 38.4 Kbps
6 Current air interface user rate is 43.2 Kbps
7 Current air interface user rate is 57.6 Kbps
<coding>:
<coding> Description
0 No HSCSD call is active. See also note below