Specifications

AT command set for S45 Siemens mobile phones and modems
_________________________________________________________________________________________
__________________________________________________________________________________________
Siemens Document No.: A30880-A10-A001-3-D376
Revision: 1.8
Revision Date: 30. November, 2001
68
2.3.10.2 AT+CRLP
AT+CRLP Select radio link protocol parameter for originating non-transparent data call
Test command
AT+ CRLP =?
Response
This modem command sets radio link protocol (RLP) parameters used when
non-transparent data calls are initiated. This command returns supported
values as a compound value.
+CRLP: (list of supported <iws>s), (list of supported <mws>s), (list of
supported <T1>s), (list of supported <N2>s)<verx>
Parameter
<iws>
0-61
Interworking window size (IWF to MS)
(Default: 61)
<mws>
0-61
Mobile window size (MS to IWF)
(Default: 61)
<T1>
48-255
Acknowledgement timer (T1 in 10 ms units)
(Default: 78)
<N2> 1-255
Re-transmission attempts N2
(Default: 6)
<verx>
RLP version supported:
0 single-link basic version
Read command
AT+ CRLP?
Response
The command returns current settings for the supported RLP version 0.
+CRLP:<iws>,<mws>,<T1>,<N2>[,<verx>]
OK
Parameter
<iws>
See Test command
<mws>
See Test command
<T1>
See Test command
<N2>
See Test command
<verx>
See Test command
Write command
AT+CRLP= [<iws>[,<mws>[,<T1> [,<N2>[,<verx>]]]]]
Parameter
<iws>
See Test command
<mws>
See Test command
<T1>
See Test command
<N2>
See Test command
<verx>
See Test command
Response
2.3.11 Fax commands
The following commands can be used for FAX transmission. If the ME is acting as a FAX modem to a PC-based
application, it is necessary to select the appropriate service class (FAX class) provided by the ME. The ME
reports its FAX service class capabilities, both the current setting and the range of services available, via the
AT+FCLASS command.
Note: According to EIA/TIA-592-A, the Error Correcting Mode (ECM) should not be used when sending
FAXes over GSM.
+FCLASS parameter Service Class Reference, Standard