4.9 Tracing

2N® VoiceBlue MAX allows for operation tracing (VoIP, SIP, GSM). Tracing is accessible in one session only at a time, the other tracing requests are rejected with BUSY. With regard to a rather extensive volume of data, we recommend that the Write communication into file function should be activated before tracing. Any Telnet–supporting terminal (HyperTerminal, Putty, etc.) can be used.

Tip

  • You are advised to synchronise your GSM gateway with the SIP Proxy, or a PC before tracing.

AT Command

  • AT%S92=x – Description AT%S92=x Set the tracing details. Refer to the table below for value X
  • AT!R2 – Start tracing via the active session
  • Any character – Terminate tracing

Layer 3 and 4 Status Listing

Timestamp Write–Out

SMP Packet Write–Out

Layer 2 Status Listing

LCR Listing

1

2

4

8

16

The resultant value X is a sum of the required functions (X= timestamps+LCR = 16+2 = 18, e.g.).