GSM Layer 3 Tracing

Thomas Jund thomas at
Tue Jun 17 10:20:41 CEST 2008

Usually there are vendor specific AT commands for the GSM chipsets to 
turn the Layer 3 tracing on.
The trace itself is then in an proprietary format, which then needs then 
to be decoded.

There was an interesting post from Rob with an example of monitoring the 
Network Quality (quite a while ago):

The information from the Layer 3 trace would be vital for such Network 
Quality monitoring. Therefore, I have
the following questions:

Does the TI Calypso chipset support GSM Layer 3 tracing (AT Command)?
Is there a specification available to decode the Layer 3 trace from TI?

Best regards,


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