I'll try to look at it later.
Not able to think atm.
It clear you know this stuff.

On Thu, Mar 22, 2018, 6:17 PM Marie Fischer <[email protected]> wrote:

> No differences in sdp, using only a-law to rule out codec-related
> problems. (Log snippets attached)
>
> Looking at wireshark capture taken on Asterisk, I have perfectly
> normal-looking RTP streams bothway - just no audio in the Linphone/iPad ->
> Asterisk direction for calls originating on Linphone/iPad .
>
>
> --
>
> marie
>
> On 22.03.2018, at 23:38, Russell Treleaven <[email protected]>
> wrote:
>
> Compare the spd between the working scenario and the non working.
>
> On Thu, Mar 22, 2018, 5:34 PM Marie Fischer <[email protected]> wrote:
>
>> No. Everything in the same LAN. (And as I wrote, it works when I use
>> Linphone on my iPhone instead of iPad, keeping everything else the same.)
>>
>> --
>>
>> marie
>>
>> On 22.03.2018, at 21:44, Russell Treleaven <[email protected]>
>> wrote:
>>
>> Is there a stateful firewall between the uac and the uas?
>>
>> On Thu, Mar 22, 2018, 1:01 PM Marie Fischer <[email protected]> wrote:
>>
>>> Hello everybody,
>>>
>>> I am trying to setup Linphone iOS 3.16.5 on an iPad 2 (iOS 9.3.5) to
>>> connect to my Asterisk PBX.
>>>
>>> Everything went quite smoothly, I can register, make and receive calls,
>>> but for outgoing calls the other party gets no sound. Strangely, I see
>>> correct RTP logs in Asterisk log (RTP streams coming & going both ways), it
>>> just seems there is no actual audio in the stream. Actually, the other
>>> party hears some static / white noise, which disappears if I press the mute
>>> button in Linphone.
>>>
>>> Tested with both in-build microphone and Apple headset, no difference.
>>>
>>> Incoming calls work correctly, i.e. have audio both ways.
>>>
>>> The same setup works correctly on an iPhone 8 (iOS 11.2.6).
>>>
>>> Linphone log file attached.
>>>
>>>
>>> --
>>> Thanks,
>>>
>>> marie
>>>
>>> _______________________________________________
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>>> https://lists.nongnu.org/mailman/listinfo/linphone-users
>>>
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