User Manual

7. DATA - HSCSD
167
LZT 123 7263 R1A
7.3 AT+CHSN HSCSD Non Transparent Call Configuration
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
<sum> Description
3 Total number of receive and transmit timeslots that ME
canuseatthesametimeis3(i.e.2+1).Thefollowing
applies in a HSCSD call: 2 (receive slots) + (transmit slots)
<sum>
<codings> Description
1 Indicates that the accepted channel coding for the next
established non-transparent HSCSD call is 4.8 kbits/s only.
Not supported
4 Indicates that the accepted channel coding for the next
established non-transparent HSCSD call is 9.6 kbits/s only
5 Indicates that the accepted channel codings for the next
established non-transparent HSCSD call are both 4.8 kbits/
sand9.6kbits/s.Not supported
8 Indicates that the accepted channel coding for the next
established non-transparent HSCSD call is 14.4 kbits/s only
12 Indicates that the accepted channel codings for the next
established non-transparent HSCSD call are both 9.6 kbits/
sand14.4kbits/s
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>[,<codin
gs>]]]]
•+CMEERROR:<err>
•OK
•ERROR
Show current non-
transparent HSCSD
setting
AT+CHSN? •+CHSN:<wAiur>,
<wRx>, <topRx>,
<codings>
•+CMEERROR:<err>
•OK
•ERROR
Test if command is
supported and show
parameter ranges
AT+CHSN=? •+CHSN:(listof
supported
<wAiur>s), (list of
supported <wRx>s),
(list of supported
<topRx>s), (list of
supported
<codings>s)
•+CMEERROR:<err>
•OK
•ERROR