Req: Device Configurations for iSip

[kajetan]

Hello,

It would be great if someone could post in the Device Configurations forum on now to configure iSip on the iPhone.

I have purchased the SIP info package from FPL and have been fighting to get iSip to work on iPhone ever since. My problem: sometimes I get no incoming audio, other times everything works great.

At home I can dial out on iSip on my iPhone, everything works great. I hang up and call the same number 30 seconds later: no audio. The same thing happened at my friend's house. At a third location, I have yet to make a successful call out, though I have only tried twice. Very frustrating.

In all cases the iPhone gets connectivity via a local 802.11g connection (Now that I think of it, they are all Linksys routers).

iSip FAQ says this is a NAT/Firewall problem and I need to use a STUN server provided by my SIP provider. Does FPL have one? It seems iSip has their own STUN and I'm using that but it's not helping.

I have turned on NAT Detect and SIP STUN. I disabled VAD. I tried to toggle RFC3605. Nothing seems to help.

I'm thinking perhaps it's a codec issue, as iSip does not support G729a, only G711, GSM, G722 and iLBC. Right now I have set the codec in iSip to auto. Is this a bad idea?

I'd love to get this resolved. If anyone has any ideas please post.

[FONGO_steve]

I don't know iSIP, but I can say that our server will support G711u without issue