Hi,

Call comes over external gateway and pass to another external gateway via outbound proxy (no authentication nor registration), but on b-leg contact header is not as expected username from tag 'From:' of a-leg.

a-leg works correct for inbound calls via external gateway:

Contact: <sip:1001@1.2.3.4:5060;transport=udp>

but b-leg (outbound calls) has header set to:

Contact: <sip:auto_to_user@1.2.3.4:5060;transport=udp;gw=mygw>

I tried to set empty value or comment this line of external gateway:

but then call failed.

How to set user in contact header on b-leg or/and what to export from dial plan to populate user in contact header on external gateway?

Regards,

Seudin