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Owner’s Manual Rev 1.0 Page 130 of 130
<codings> Description
4 Indicates that the accepted channel coding for the next
established non-transparent HSCSD call is 9.6 kbits/s
only
7.3 AT+CHSN HSCSD Non Transparent Call Configuration
Description Command Possible Responses
Set HSCSD
configuration. This
command is also used
during a call if new
<wAiur> and/or <wRx>
are/is desired
AT+CHSN=[<wAiur>
[,<wRx>[,<topRx>
[,<codings>]]]]
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
Show current non-
transparent HSCSD
setting
AT+CHSN?
•_ +CHSN: <wAiur>,
<wRx>, <topRx>,
<codings>
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
Test if command is
supported and show
parameter ranges
AT+CHSN=?
•_ +CHSN: (list of
supported <wAiur>s),
(list of supported
<wRx>s), (list of
supported <topRx>s),
(list of supported
<codings>s)
•_ +CME ERROR: <err>
•_ OK
•_ ERROR
Controls parameters for non-transparent HSCSD calls. Changing <topRx> or
<codings> during a call does not affect the current call. Changing <wAiur>
or <wRx> affects the current call only if <topRx> was non-zero when the call
was established. When using the command in this way it comes in the
“action” command category. This is what is referred to as user initiated up-
and down-grading in GSM 02.34 and GSM 03.34.
NOTE! - Recommended value for parameter <speed> in
AT+CBST is 0.
<wAiur> Description