[Freeswitch-users] fring

Torstein Knutsen torstein.knutsen at gmail.com
Wed Oct 8 09:26:33 PDT 2008

Yeah, this is a good answer :)

I did somemore research with Fring,and it seems that i'ts not the iphone
that talks SIP, iphone talks "fring'ish" with fring servers, who in turn
talks SIP with eg your FreeSWITCH .. I have yet to hear of somone having
less than 1000ms delay on the media, so I think ("as the SIP guy over here")
that it's better to hold out for another app to the iphone for SIP
Some of these SIP servers uses official addresses in CONTACT, and some not.
Servers I have seen has been located (if RIPE is correct) in Finland,
Israel, and UK.. there probably is more ...

anyhow tought you might like to know.

On Wed, Oct 8, 2008 at 3:10 PM, Anthony Minessale <
anthony.minessale at gmail.com> wrote:

> 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 at 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
> --
> Anthony Minessale II
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