At+Cbst Select Bearer Service Type; At+Crlp Select Radio Link Protocol Parameters For Originated Non-Transparent Data Calls - Multi-Tech MultiModem EDGE Reference Manual

7.19 AT+CBST Select Bearer Service Type

Description:
Test Command Syntax:
Response(s):
Read Command Syntax:
Response(s):
Write Command Syntax:
Response(s):
Parameter Descriptions:
<speed>
0 Autobauding
1 300 bps (V.21)
2 1200 bps (V.22)
4 2400 bps (V.22bis)
6 4800 bps (V.32)
7 9600 bps (V.32) Default
14 14400 bps (V.34)
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)
75 14400 bps (V.110)
<name>
0 Asynchronous modem. Default
<ce>
Transparent mode is not supported.
1 Non-transparent. Default
If problems are encountered with CSD connections at 14.4 kbit/s, you may be required to change the Fixed
Note:
Network User Rate depending on the network. See AT^SFNUR for details.
7.20 AT+CRLP Select Radio Link Protocol Parameters for
Originated Non-Transparent Data Calls
Description:
Test Command Syntax:
Response(s):
Read Command Syntax:
Response(s):
Write Command Syntax:
Response(s):
Parameter Descriptions:
<iws>
Interworking window size (IWF to MS)
0...61 Default is 61
<mws>
Mobile window size (MS to IWF)
0...61 Default is 61
<T1>
Acknowledgement timer (T1 in 10 ms units)
39 (The number had been 48) - 255
<N2>
Re-transmission attempts N2
1...255 Default is 6
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371G)
The AT+CBST write command selects the bearer service <name>, the data rate <speed>
and the connection element <ce> to be used when data calls are originated. The settings
also apply to mobile terminated data calls, especially when single numbering scheme calls
or calls from analog devices are received (see AT+CSNS). See GSM 02.02 for a list of
allowed combinations of subparameters.
AT+CBST=?
+CBST: (list of supported<speed>s), (list of supported<name>s), (list of supported<ce>s)
OK
AT+CBST?
+CBST: <speed>, <name>, <ce>
OK
AT+CBST=<speed>[, <name>[, <ce>]]
OK, ERROR
The AT+CRLP write command sets radio link protocol (RLP) parameters used when non-
transparent data calls are originated. The read command returns the current settings for
the supported RLP version 0.
AT+CRLP=?
+CRLP: (list of supported<iws>s), (list of supported<mws>s), (list of supported<T1>s), (list
of supported<N2>s)
OK
AT+CRLP?
+CRLP: <iws>, <mws>, <T1>, <N2>
OK
AT+CRLP=[<iws>[, <mws>[, <T1>[, <N2>]]]]
OK, ERROR, +CME ERROR: <err>
Default is 78
Chapter 7 – Call-Related Commands
90