That should be framed so nobody can forget how they passed the buck to.... "the SIP stack" the all knowing SIP stack. What does that mean? Tell him next time he wants to pretend he knows what he's talking about to say "THE RFC SAYS...." That's how the pros do it.
For example... The RFC says that if you call someone with a contact header that you MUST send any subsequent communication to that contact address so if you send FS an INVITE with a contact with a local addr, we will try to send the rest of the signaling to that addr.
The solution is for them to use STUN, we all know they won't so the other solution is to turn on the NAT hacks in FS that will make us
do an acl lookup on the contact addr and lock the traffic to be pumped out the reverse port.
In your sip profile add the params
<param name="apply_nat_acl" value="rfc918"/>
<param name="agressive_nat_detection" value="true"/>
This will make FS break all the normal rules so the phone can be behind nat and be stupid and blissful while we pretend they
did the right thing and lie to them so they think you are calling somone on the local lan.
On Wed, Oct 8, 2008 at 7:48 AM, Torstein Knutsen
<torstein.knutsen@gmail.com> wrote:
Fring uses private address in contact.fields on some servers ...
on reporting this I got this answer :
Hello,
Thank you for contacting our support team.
I've checked with our SIP guy here and it seems like this is how other SIP softwares work (X-Lite for example)
According to the SIP stack, Contact header MAY exist and it is not a MUST parameter.
If you have further queries, please do not hesitate to contact us again.
Thank you,
Omri.
fring support team.
regards
Torstein
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