Hi Klaus,

actually is not correct as the branch parameter is mandatory:

8.1.1.7 Via

.........

When the UAC creates a request, it MUST insert a Via into that request. The protocol name and protocol version in the header field MUST be SIP and 2.0, respectively. The Via header field value MUST contain a branch parameter. This parameter is used to identify the transaction created by that request. This parameter is used by both the client and the server. .........

It looks that the SIP grammar is not 100% synchronized with the RFC's text.

Regards, Bogdan

Klaus Darilion wrote:

Yes. this is allowed

Via = ( "Via" / "v" ) HCOLON via-parm *(COMMA via-parm)

regards klaus

Ricardo Martinez wrote:

...

Hello list. Sorry to ask this question here, but i can't find the answer in the RFC3261 Is this "VIA" permited according to the RFC?

    Via: SIP/2.0/UDP____ 69.20.6.205:15060, SIP/2.0/UDP____ 

69.1.229.69:4081;branch=z9hG4bK-58e9ccfcef0f4c99915b8007cb9713e1-1156793814

It seems to be two VIA's in ONE line...

Thanks Regards, Ricardo.-

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