User guide

Developers guidelines | AT commands
102 June 2010
AT+CHSR HSCSD parameters report (ver. 2)
4 Current channel coding is 9.6 Kbps. (TCH/F9.6)
8 Current channel coding is 14.4 Kbps. (TCH/F14.4)
Note: The value “0” only applies when no HSCSD call is active (general BS 20 or
30) and in such a case all four parameters will be “0”
Description: When this command is enabled the intermediate result code +CHSR:
<rx>,<tx>,<aiur>, <coding> is returned from the TA to the TE when an
HSCSD call is being set up. The result code represents the current (negoti-
ated or renegotiated) HSCSD parameters. If enabled, the intermediate
result code is transmitted at the point of the call setup negotiation where
the ME/TA has determined what type of an HSCSD connection will be
used. Result code transmission is done after possible service (+CR), error
control (+ER) and/or compression (+DR) reporting but before possible TE –
TA rate (+ILRR) reporting and before the intermediate result code CON-
NECT is transmitted. The format of the intermediate result code is:
+CHSR: <rx>,<tx>,<aiur>,<coding>
For the value definitions, see the AT+CHSC command. For instance, for a
non-transparent HSCSD call, result code “+CHSR: 2, 1, 4, 8” means that
the call has two time slots downlink, one time slot uplink, the air interface
user rate is 28.8 Kbps and the used channel coding is TCH/F14.4.
Execution
command: AT+CHSR=[<mode>]
Read command: AT+CHSR?
Read command
response: +CHSR: <mode>
Test command: AT+CHSR=? Shows if the command is supported.
Test command
response: +CHSR: (list of supported <modes>s)
Parameter:
<mode>:
<mode> Description
0 Disable reporting. Default value
1 Enable reporting
<coding> Description