2N Omega series - VoIP manual v1.4 - Manual (Page 100)

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Push Setup to set the PBX module parameters.
6.1.5.1. Trace
Enable/set the following:

Trace – enable the creation of the PBX module LOG communication.

Erase trace at start – enable the deletion of the PBX module LOG
communication upon the XAPI server start.

File size limit
– limit the LOG file size (*.trc). When the limit is exceeded, the
oldest data are overwritten.
6.1.5.2. Number Conversion