MBG 7.1 "rport missing from via header - cannot be test"

[vander]

Hello,

We have a MBG 7.1 in my Mitel network and we are using this server to be "proxy server" (session border controller) to connect via SIP Trunk with PSTN, but all time that MBG try to connect, it's sending the message:"rport missing from via header - cannot be test".

MBG server was configured like Server-Gateway. We tried other twice options: DMZ and Server-Gateway with Bridged Interface configurations, but unsuccessful too.

Please, anyone knows how to solve this question?

Thanks,

Vander Freitas

P.S.: I attached network schema.

[martyn]

Did you ever find an answer to this?