User guide

Developers guidelines | AT commands

95 June 2010

AT+CRLP Radio link protocol (ver. 2)

<ce>:

<ce> Description

1 Non transparent. Default value

Description: Radio Link Protocol (RLP) parameters used when non-transparent data

calls are originated, may be altered with the set command. Available com-

mand subparameters depend on the RLP versions implemented by the

device. For example, <ver> may not be available if the device supports

only versions 0 and 1.

Note: If radio link protocol is not used, but some other error correcting

protocol (for transparent data calls) is used, V.25ter Error Control Selection

test command +ES=? may be used to indicate the presence of the proto-

col.

The test command returns values supported by the TA as a compound

value. If the ME/TA supports several RLP versions <verx>, the RLP param-

eter value ranges for each <verx> are returned in a separate line.

Set command: AT+CRLP=[<iws>[,<mws>[,<T1>[,<N2>[,<ver>[,<T4>]]]]]]

Read command: AT+CRLP? Displays the current parameter settings for each supported

RLP version. Only RLP parameters applicable to the corresponding <verx>

are returned.

Read command

response: +CRLP: <iws>,<mws>,<T1>,<N2>[,<ver1>[,<T4>]]<CR><LF>

[+CRLP: <iws>,<mws>,<T1>,<N2>[,<ver2>[,<T4>]]<CR><LF>

[...]]

Test command: AT+CRLP=? Shows if the command is supported.

Test command

response: +CRLP: (list of supported <iws>s),(list of supported <mws>s),(list of

supported <T1>s),(list of supported <N2>s)[,<ver1>[,(list of supported

[+CRLP: (list of supported <iws>s),(list of supported <mws>s),(list of

supported <T1>s),(list of supported <N2>s)[,<ver2>[,(list of supported

[...]]

Parameters: Default values and value ranges depend on RLP version. See GSM 04.22

subclause 5.4

<iws>:

<iws> Description

0–61 IWF to phone window size

61 Default value

<mws>:

<mws> Description

0–61 MS to IWF window size