WMO2 G900 / G1800 / G1900
WCOM/GSM/WMO2/WMO2ATDOC
Friday 21 May 1999
WAVECOM confidential ©
67
4.8
Data commands
4.8.1
Bearer type selection
+CBST
Command syntax:
AT+CBST= <speed>, <name>, <ce>
No data compression is provided and only asynchronous modem is
supported (<name> = 0).
<speed>
Description
Modem type
0
Autobauding
None
1 (*)
300 bps
V.21
2 (*)
1200 bps
V.22
3 (*)
1200/75 bps
V.23
4
2400 bps
V.22bis
5
2400 bps
V.26ter
6
4800 bps
V.32
7
9600 bps
V.32
8
Specific
65 (*)
300 bps
V.110
66 (*)
1200 bps
V.110
68
2400 bps
V.110
70
4800 bps
V.110
71
9600 bps
V.110
(*) Only for non transparent mode
<ce>
Connection element
0
Transparent only
1
Non transparent only
2
Transparent preferred
3
Non transparent preferred
Application to GSM
AT+CBST=7,0,1
ask for a bearer
GSM to application
OK
bearer supported
Application to GSM
AT+CBST=81,0,0
ask for a bearer
GSM to application
+CME ERROR: 4
bearer not supported
This command applies to both
outgoing
and
incoming data calls
but in a
different way. For outgoing call the two parameters (e.g. <speed> and
<ce>) apply, whereas for incoming call only the <ce> parameter applies.
Note 1) as far as incoming calls are concerned, if <ce> is set to T only and
the network proposes NT only or vice versa then the call is released.
Note 2) older values 100 and 101 for <ce> are retained for compatibility
purpose but shallnot be used anymore, values 2 and 3 shall be used
instead.
4.8.2
Service reporting control
+CR
This command enables a more detailed service reporting, in case of data
outgoing call
. Before sending the CONNECT response to the application,
the GSM module will precise the type of data connection that have been
established.
These report types are:
+CR: ASYNC
for asynchronous transparent
+CR: REL ASYNC
for asynchronous non-transparent
Application to GSM
AT+CR=0
extended reports disabled
GSM to application
OK
command valid
Application to GSM
AT+CR=1
extended reports enabled
GSM to application
OK
command valid
Default value is stored in E2PROM.
