User Manual

Table Of Contents
Document Name: Common Commands and Attributes v1.3.0 Revision: 1.2
14.1.9 GPR CPI – CHAP Interval
14.1.9.1 Overview
Set the CHAP interval timer.
14.1.9.2 Usage
Attribute type: Read / Write.
This attribute is used to set a timer that can be used to force a re-negotiation of the
CHAP authentication every <interval> seconds. This is used for two reasons, if
there is not traffic the GPRS can be detached so it serves as a keep-alive function.
It also checks that the connection is actually valid and working. If the negotiation
fails for whatever reason the PPP is dropped.
If the GPRS functionality is started as “PERSISTENT” it will then restart and attempt
to re-negotiate the whole PPP link with the server.
A good starting point for this parameter is to set it somewhere between 1-3
minutes (60-180 seconds).
Usage for setting parameter:
SET GPR CPI <value>
Where <value> should be in the interval of 10-300 seconds.
Example:
SET GPR CPI 90
Sets the CHAP renegotiation interval to 90 seconds.
Usage for getting parameter :
GET GPR CPI
Reply:
90
Indicating that the interval has been set to 90 seconds previously.
Example:
GET GPR CPI
Reply:
90
14.1.10 GPR CTY – GPRS connection type
14.1.10.1 Overview
Sets the connection type of GPRS to either PPP or IP.
14.1.10.2 Usage
Attribute Type: Read / Write.
The link to the GPRS network can use different type of protcols. Normally the
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