Hi Pablo,
The other party should be behind (much) less restrictive NATs, e.g:
full-cone, or non-NAT-ed. Otherwise, as Benny mentioned, you will need
relaying service such as TURN.
BR,
nanang
On Tue, Oct 5, 2010 at 3:21 AM, Pablo Nu?ez <nunezlopez at gmail.com> wrote:
> Thanks a lot Benny, I switched from 3G to a Wi-Fi router using the stun
> server and now its working really nice.
> So, in order to the final user to use 3G (Im in a foreign country) which
> uses Symmetric NAT, the other party should be?connected?to network that uses
> Symmetric NAT also? There is no workaround for this? I would like to let the
> user to use 3G.
>
> Best regards,
> Pablo N.
>
>> Date: Sat, 2 Oct 2010 10:31:33 +0700
>> From: Benny Prijono <bennylp@xxxxxxxxx>
>> To: pjsip list <pjsip at lists.pjsip.org>
>> Subject: Re: Unable to hear voice in local speaker using Pjsua
>> ? ? ? ?app on iPhone iOS4
>> Message-ID:
>> ? ? ? ?<AANLkTi=VtJBG0UbZ6Bb-yk4yUSuW2AZZ1LfJNiELwwo1 at mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> On Fri, Oct 1, 2010 at 1:03 AM, Pablo Nunez <nunezlopez at gmail.com> wrote:
>> > Benny Prijono <bennylp <at> teluu.com> writes:
>> >
>> >>
>> >> Hi,
>> >>
>> >> Thanks for the detailed report. I'm guessing that you have problem
>> >> with NAT, hence STUN should be enabled. The instruction to enable NAT
>> >> in [1] was outdated (sorry for that, but I just fixed it), the option
>> >> should be "--stun-srv" instead of "--use-stun1". For example, add this
>> >> in your cmdline:
>> >>
>> >> ? --stun-srv stun.pjsip.org
>> >>
>> > Anyway I manage to set up the STUN server by adding this line of code on
>> > the
>> > XCode in the app_init method:
>> > app_config.media_cfg.no_vad = PJ_TRUE;
>> > app_config.cfg.stun_host = pj_str ("stun.pjsip.org");
>> >
>> > Now, when I run the app it detects the STUN server and if I put 'n' in
>> > command
>> > line it says "NAT detected as Symmetric"
>> >
>> > The bad news for me are that Im still unable to hear any sound on my
>> > local
>> > iPhone speaker.
>> >
>>
>> You're behind symmetric NAT, and that's quite difficult to work with,
>> as it depends on whether the other party is also behind another
>> symmetric or port restricted NAT. If this is the case, then there's no
>> other solution except to use relaying service.
>>
>> ?-Benny
>>
>>
>>
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