It is not really complicated to do, but I do not see the reason (why a static dummy user should better than the client one, from carrier perspective).

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 02/05/2013 11:49 AM, Brett Nemeroff wrote:
Bogdan,
Thanks for this! This confirms my belief. Hopefully the static userpart will meet the carrier's need. If it doesn't, would it be complicated to preserve the original userpart?

Thanks for your help!
-Brett


On Tue, Feb 5, 2013 at 3:38 AM, Bogdan-Andrei Iancu <[email protected] <mailto:[email protected]>> wrote:

    Hi Brett,

    1) a SIP URI without username is perfect valid.

    2) as Contact URI is just for IP routing purposes, a username part
    is totally useless.

    3) preserving the username may "leak" topo info (you never know
    what is the username content).

    4) see the simple attached patch to force a static dummy username.

    Regards,

    Bogdan-Andrei Iancu
    OpenSIPS Founder and Developer
    http://www.opensips-solutions.com


    On 02/05/2013 11:09 AM, Brett Nemeroff wrote:
    Hello All,
    I noticed that when invoking topology_hiding from the dialog
    module that the contact header is rewritten without a userpart in
    the URI. I've had some carriers complain about the lack of a
    userpart. What is the reasoning for removing the userpart of the
    URI and is there any way to safely add it back without breaking
    in-dialog requests?

    Thanks,
    Brett


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