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Re: [Linphone-developers] Incompatible codecs- phone not ringing

From: Noemi Leon
Subject: Re: [Linphone-developers] Incompatible codecs- phone not ringing
Date: Mon, 5 Aug 2013 15:04:05 +0200

Hi again,

Sorry if I explained it wrong. The situation is the following one:

I have two sip phones. One is Linphone ( call it L)  the other is a custom one (call it C ). The custom one does not handle the 415 response codec. I force them  to not having any compatible codec. For example Linphone uses PCMU and the custom one uses G729.

C calls L, so L sends a 415 response error because there is not matching codec available. C does not handle that response and so keeps inviting L for some time while L keeps sending the 415 error. 

This is not visible for the L user (but in the logcat you can see that Linphone is doing all the transactions).Is it a good idea to not inform the L user that someone is trying to contact him? It could be better if the L user shows a ringing  message first and  then check if the codecs are compatible or not. 


2013/8/5 Guillaume Beraudo <address@hidden>

You should look at linphone traces to check why codecs mismatch.


On Mon, Aug 05, 2013 at 02:39:39PM +0200, Noemi Leon wrote:
> Hello,
> I'm testing Linphone when someone calls to my linphone user and we don't
> have compatible codecs. I can see that Linphone for Android returns a 415
> error ("Unsupported media type") but never rings. So the transaction is
> invisible for the user.
> I think it is problem because if the other end does not have implemented
> the 415 error it will try to continue calling my user and will keep my user
> busy. I have no possibility to reject the call inmediately sending for
> example a 603 response code.
> Regards

> _______________________________________________
> Linphone-developers mailing list
> address@hidden

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