Sip Message Flow - Snom 4S Administrator's Manual

Sip proxy/registrar version 2.30

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S N O M

SIP Message Flow

Should a problem occur, a look at the messages that went though

the proxy can be very helpful. If you go to the Trace web page, a list of

the last messages appears on the screen.

The list has the following elements:

•

Time:

The time when the packet was sent or received.

•

Type:

The type indicates whether the packet was received (R) or

transmitted (T). By clicking on the symbol you get a list of all

packets that have the same call-ID as the packet.

•

Source/Destination:

Here you can see which transport layer (UDP or TCP) was used,

the IP address of the source or destination, and the port that was

involved.

•

Header:

Here you can see the first line of the SIP message.

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A N U A L

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