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iTegno 39XX GPRS Modem
AT Commands Guide
02000C17
•
v1.5
Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd. © 2011, 2012 iWOW
Connections Pte Ltd
130
0
=
data circuit asynchronous (UDI or 3.1 kHz modem)
1
=
data circuit synchronous (UDI or 3.1 kHz modem)
4
=
data circuit asynchronous (RDI)
5
=
data circuit synchronous (RDI)
<ce>
0
=
transparent
1
=
non-transparent
2
=
both, transparent preferred
3
=
both, non-transparent preferred
9.2
Radio Link PrCRLP
Description:
This command is used to change the radio link protocol (RLP) parameters used when nontransparent data-calls
are originated.
•
Set command is used to change the radio link protocol(RLP) parameters.
•
Read command returns the current CRLP settings.
•
Test command returns lists of supported <iws>, <mws>,<T1>, <N2>.
Syntax:
AT+CRLP=[<iws>[,<mws>[,<T1>[,<N2>]]]]
Command
Possible Responses
AT+CRLP=[<iws>[,<mws>[,<T1>[,<N2>]]]]
OK
or
CME ERROR: <error>
AT+CRLP?
+CRLP: <iws>,<mws>,<T1>,<N2>
OK
AT+CRLP=?
+CRLP: (0-61),(0-61),(39-255)(1-255)
i.e. lists of supported <iws>, <mws>,
<T1>, <N2>
OK
Defined Values
<iws>
IWF to MS window size
<mws>
MS to IWF window size
<T1>
Acknowledgement timer in units of 10ms
<N2>
Retransmission attempts