Specifications

Chapter 7 – Call-Related Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 104
7.21 AT+CRLP Select Radio Link Protocol Parameters for
Originated Non-Transparent Data Calls
Description: 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.
Syntax: Test Command: AT+CRLP=?
Responses: +CRLP: (list of supported<iws>s), (list of supported<mws>s), (list of
supported<T1>s), (list of supported<N2>s)
OK
Read Command: AT+CRLP?
Responses: +CRLP: <iws>, <mws>, <T1>, <N2>
OK
Write Command: AT+CRLP=[<iws>[, <mws>[, <T1>[, <N2>]]]]
Responses: OK
ERROR
+CME ERROR: <err>
Parameter:
<iws> This value can be stored with AT&W and can be displayed with AT&V.
Interworking window size (IWF to MS)
0...61 Default = 61 (This is the factory default value and can be restored to '61' with
AT&F).
<mws> This value can be stored with AT&W and can be displayed with AT&V.
Mobile window size (MS to IWF)
0...61 Default is 61 (This is the factory default value and can be restored to '61' with
AT&F).
<T1> This value can be stored with AT&W and can be displayed with AT&V.
Acknowledgement timer (T1 in 10 ms units)
39 (The number had been 48) - 255 Default is 78 (This is the factory default value and
can be restored to '78' with AT&F). It is also the defaulted value if the parameter is
omitted (x will be assumed).
<N2> This value can be stored with AT&W and can be displayed with AT&V.
Re-transmission attempts N2
1...255 Default is 6 (This is the factory default value and can be restored to '6' with
AT&F).
Notes:
• This command is not PIN protected.
• This command is supported in airplane mode.