Re: [asterisk-users] pjsip: asterisk can't decide which codec to use

2017-06-16 Thread Joshua Colp
On Fri, Jun 16, 2017, at 12:29 PM, Michael Maier wrote:
> I just tested your fix 2 times w/ using the scenario mentioned in the
> bug report. It has been working for me. No more flipping.
> 
> Asterisks indeed commits more than one codec in ok sdp, but always uses
> the first one afterwards. Hopefully the peer always handles it the same
> way. I would have thought that the ok sdp contains just one codec (the
> best).

There's actually a feature for just that in master,
preferred_codec_only. It'll be available in 15. The new behavior in the
branches with multiple codecs in the answer mirrors that of chan_sip, so
it's pretty safe.

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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Re: [asterisk-users] pjsip: asterisk can't decide which codec to use

2017-06-16 Thread Michael Maier
On 05/13/2017 at 07:21 AM Michael Maier wrote:
> On 05/12/2017 at 08:49 PM, Joshua Colp wrote:
>> On Fri, May 12, 2017, at 02:46 PM, Michael Maier wrote:
>>
>> 
>>
>>>
>>> If I'm doing exactly the same call originated with another extension,
>>> there can't be seen these frequent changes. But the strange thing is,
>>> that in both cases the part between extension and asterisk doesn't show
>>> any codec changes ... .
>>>
>>> Deeper investigations show, that if the conference (callee) sends the
>>> first rtp package (-> g711 - should be g722), things are going choppy, 
>>> if the extension (caller) sends the first package (g722), things are 
>>> running stable.
>>>
>>>
>>> Any idea to convince asterisk always to use the first codec of ok sdp 
>>> or how to convince asterisk to put only one codec to ok sdp (the first).
>>
>> This is not currently an option in chan_pjsip but I'd suggest filing an
>> issue[1] for this scenario with all available information.
>>
>> [1] https://issues.asterisk.org/jira
> 
> https://issues.asterisk.org/jira/browse/ASTERISK-26996

I just tested your fix 2 times w/ using the scenario mentioned in the
bug report. It has been working for me. No more flipping.

Asterisks indeed commits more than one codec in ok sdp, but always uses
the first one afterwards. Hopefully the peer always handles it the same
way. I would have thought that the ok sdp contains just one codec (the
best).


Thanks,
Michael

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Re: [asterisk-users] pjsip: asterisk can't decide which codec to use

2017-05-12 Thread Michael Maier
On 05/12/2017 at 08:49 PM, Joshua Colp wrote:
> On Fri, May 12, 2017, at 02:46 PM, Michael Maier wrote:
> 
> 
> 
>>
>> If I'm doing exactly the same call originated with another extension,
>> there can't be seen these frequent changes. But the strange thing is,
>> that in both cases the part between extension and asterisk doesn't show
>> any codec changes ... .
>>
>> Deeper investigations show, that if the conference (callee) sends the
>> first rtp package (-> g711 - should be g722), things are going choppy, 
>> if the extension (caller) sends the first package (g722), things are 
>> running stable.
>>
>>
>> Any idea to convince asterisk always to use the first codec of ok sdp 
>> or how to convince asterisk to put only one codec to ok sdp (the first).
> 
> This is not currently an option in chan_pjsip but I'd suggest filing an
> issue[1] for this scenario with all available information.
> 
> [1] https://issues.asterisk.org/jira

https://issues.asterisk.org/jira/browse/ASTERISK-26996


Thanks,
regards,
Michael


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Re: [asterisk-users] pjsip: asterisk can't decide which codec to use

2017-05-12 Thread Joshua Colp
On Fri, May 12, 2017, at 02:46 PM, Michael Maier wrote:



> 
> If I'm doing exactly the same call originated with another extension,
> there can't be seen these frequent changes. But the strange thing is,
> that in both cases the part between extension and asterisk doesn't show
> any codec changes ... .
> 
> Deeper investigations show, that if the conference (callee) sends the
> first rtp package (-> g711 - should be g722), things are going choppy, 
> if the extension (caller) sends the first package (g722), things are 
> running stable.
> 
> 
> Any idea to convince asterisk always to use the first codec of ok sdp 
> or how to convince asterisk to put only one codec to ok sdp (the first).

This is not currently an option in chan_pjsip but I'd suggest filing an
issue[1] for this scenario with all available information.

[1] https://issues.asterisk.org/jira

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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Re: [asterisk-users] pjsip: asterisk can't decide which codec to use

2017-05-12 Thread Michael Maier

On 05/12/2017 at 07:46 PM, Michael Maier wrote:

Forgot to mention: It's actual asterisk 13 branch from today (version 
before I tested, which has the same problem, was 13.15).



Regards,
Michael



Hello!

I'm facing completely choppy sound. The wireshark trace shows, that
there are a lot of codec changes without any trigger (means no options
or reinvite or any other package).

Background:
The call is initiated by asterisk and is received by the same asterisk
conference room via
Phone extension ->  asterisk -> provider A -> provider B -> asterisk.

Asterisk initially sends invites using g722 and g711 and gets exactly
this invite back as incoming call. The answer is g722,g711 in the ok sdp.

Now, Asterisk can't decide, which codec to use. It frequently changes
the codec just as it likes to apparently without any visible reason.

[2017-05-11 17:28:03] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from none to alaw

[2017-05-11 17:28:03] DEBUG[5113][C-0039]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from none to alaw
[2017-05-11 17:28:04] DEBUG[5123][C-0039]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from none to alaw
[2017-05-11 17:28:04] DEBUG[5113][C-0039]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from alaw to g722

[2017-05-11 17:28:04] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from alaw to g722
[2017-05-11 17:28:04] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from g722 to alaw
[2017-05-11 17:28:13] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from alaw to g722
[2017-05-11 17:28:13] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from g722 to alaw
[2017-05-11 17:28:19] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from alaw to g722
[2017-05-11 17:28:19] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from g722 to alaw
[2017-05-11 17:28:23] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from alaw to g722
[2017-05-11 17:28:23] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from g722 to alaw

[2017-05-11 17:28:23] DEBUG[5123][C-0039]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from alaw to g722

[2017-05-11 17:28:23] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from alaw to g722
[2017-05-11 17:28:28] DEBUG[5121][C-003a]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from g722 to alaw

[2017-05-11 17:28:28] DEBUG[5123][C-0039]: res_rtp_asterisk.c:3634 
ast_rtp_write: Ooh, format changed from g722 to alaw

003a -> inbound channel (callee)
0039 -> outbound channel (caller)


If I'm doing exactly the same call originated with another extension,
there can't be seen these frequent changes. But the strange thing is,
that in both cases the part between extension and asterisk doesn't show
any codec changes ... .

Deeper investigations show, that if the conference (callee) sends the
first rtp package (-> g711 - should be g722), things are going choppy,
if the extension (caller) sends the first package (g722), things are
running stable.


Any idea to convince asterisk always to use the first codec of ok sdp
or how to convince asterisk to put only one codec to ok sdp (the first).



Thanks,
regards,
Michael




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