[Serusers] SIP Contact header field issue incase of NAT

[Greger V. Teigre]

You are using fix_nated_contact() for REGISTER, use fix_nated_register() 
instead.
g-)

Abdul Qadir wrote:
> Hi All,
>
>   I have problem connecting Nokia Phone with SER. The problem is When 
> SER receives the registration request from the Nokia phone. The 
> registration request contain the phone's private IP (192.xxx.xx.xx), 
> since we use wifi for connection. Our proxy detects that since this is 
> a private IP handles the NAT translation and determines the phone 
> public IP address (e.g., 202.xxx.xx.xx, port xx). Our SIP proxy 
> informs the phone that registration is successful but the contact 
> information is changed from userid at 192.xxx.xxx.xx to 
> userid at 202.xxx.xxx.xx, port xx.  On recieving this changed contact 
> info the Phone rejects 200 Ok.
>
>      We tried to contact nokia people and they said that its part of 
> RFC3261 to reject such contacts. After this I have also gone through 
> RFC 3261 section "10.2.4" and it seems that phone is doing rite.  Can 
> any body tell me why SER is changing the contact address in case of 
> NAT. It would be higly appreciated if you can give me some reference 
> from some RFC or other document which I can show to nokia people.
>
>
>
> Best Regards,
> Abdul Qadir
>
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