[Serusers] RTP proxy and Cisco IP phones

[Paul Hazlett]

Joao,

One problem I see is that you're calling fix_nated_contact() when
processing REGISTER messages.

This is actually illegal because the RFC says you can't change the
contact header.

Therefore you should call fix_nated_register() instead.

Regards,
Paul

On 10/4/05, Joao Pereira <joao.pereira at fccn.pt> wrote:
> Hello to all,
> Im having huge problems connecting Cisco IP phones (7940 and 7960) to my
> SER.
> I m using the 7.5 SIP firmware.
> Before that, all phones (softphones, hardphones,...) worked, but the
> Ciscos seem to have problems to register and to make calls. The bigger
> problems are in the RTPproxy part of my ser.cfg.... the Cisco IP phones
> cant get out of this:
>
>   if (method=="REGISTER" && nat_uac_test("3")) {
>     fix_nated_contact();
>       log(1, "LOG: ciscos doesnt work with NAThelper \n");
>     force_rport();
>     setflag(2);
>     };
>
>
> The phones dont register with SER when I have "force_rport".
> The phones cant make calls between them if I have "fix_nated_contact"
> and "force_rport"
>
> If someone could manage to put Cisco IP phones to work with RTPproxy and
> NAT helper, please give me a hand.
> Thanks
> Joao Pereira
> www.fccn.pt
>
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