asterisk users - Apr 2023 - RTP address learning and timing problem

On Tue, Feb 28, 2023 at 9:51 AM Joshua C. Colp <jcolp at sangoma.com>
wrote:
> On Tue, Feb 28, 2023 at 9:50 AM David Cunningham <
> dcunningham at voisonics.com> wrote:
>
>> Hello,
>>
>> Does anyone know if one of the "strictrtp" options disables
RTP learning?
>> As far as I can tell from the documentation the values "no"
and "seqno" are
>> more permissive in allowing other sources rather than less, but I
thought
>> I'd check.
>>
>
> Setting it to "no" disables the learning.
>
Since I haven't gotten the email yet I'll just reply to my own.

The "no" option disables strict RTP protection. Learning is part of
strict
RTP protection, it is what determines what the source of media is and then
blocks other packets. There is no ability to set it per-peer/per-endpoint.

-- 
Joshua C. Colp
Asterisk Project Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
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Thank you Joshua.


On Thu, 2 Mar 2023 at 12:32, Joshua C. Colp <jcolp at sangoma.com> wrote:
> On Tue, Feb 28, 2023 at 9:51 AM Joshua C. Colp <jcolp at sangoma.com>
wrote:
>
>> On Tue, Feb 28, 2023 at 9:50 AM David Cunningham <
>> dcunningham at voisonics.com> wrote:
>>
>>> Hello,
>>>
>>> Does anyone know if one of the "strictrtp" options
disables RTP
>>> learning? As far as I can tell from the documentation the values
"no" and
>>> "seqno" are more permissive in allowing other sources
rather than less, but
>>> I thought I'd check.
>>>
>>
>> Setting it to "no" disables the learning.
>>
>
> Since I haven't gotten the email yet I'll just reply to my own.
>
> The "no" option disables strict RTP protection. Learning is part
of strict
> RTP protection, it is what determines what the source of media is and then
> blocks other packets. There is no ability to set it per-peer/per-endpoint.
>
> --
> Joshua C. Colp
> Asterisk Project Lead
> Sangoma Technologies
> Check us out at www.sangoma.com and www.asterisk.org
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> Check out the new Asterisk community forum at:
> https://community.asterisk.org/
>
> New to Asterisk? Start here:
>       https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users


-- 
David Cunningham, Voisonics Limited
http://voisonics.com/
USA: +1 213 221 1092
New Zealand: +64 (0)28 2558 3782
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Hi Joshua,

Could you confirm if the 5 second period for learning a new audio stream is
a minimum or a maximum? The unusual call flow in question results in
Asterisk learning a new audio stream when we don't want it to, and having a
minimum of say 2 seconds of audio would help avoid this.

Thank you!


On Thu, 2 Mar 2023 at 12:32, Joshua C. Colp <jcolp at sangoma.com> wrote:
> On Tue, Feb 28, 2023 at 9:51 AM Joshua C. Colp <jcolp at sangoma.com>
wrote:
>
>> On Tue, Feb 28, 2023 at 9:50 AM David Cunningham <
>> dcunningham at voisonics.com> wrote:
>>
>>> Hello,
>>>
>>> Does anyone know if one of the "strictrtp" options
disables RTP
>>> learning? As far as I can tell from the documentation the values
"no" and
>>> "seqno" are more permissive in allowing other sources
rather than less, but
>>> I thought I'd check.
>>>
>>
>> Setting it to "no" disables the learning.
>>
>
> Since I haven't gotten the email yet I'll just reply to my own.
>
> The "no" option disables strict RTP protection. Learning is part
of strict
> RTP protection, it is what determines what the source of media is and then
> blocks other packets. There is no ability to set it per-peer/per-endpoint.
>
> --
> Joshua C. Colp
> Asterisk Project Lead
> Sangoma Technologies
> Check us out at www.sangoma.com and www.asterisk.org
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> Check out the new Asterisk community forum at:
> https://community.asterisk.org/
>
> New to Asterisk? Start here:
>       https://wiki.asterisk.org/wiki/display/AST/Getting+Started
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users


-- 
David Cunningham, Voisonics Limited
http://voisonics.com/
USA: +1 213 221 1092
New Zealand: +64 (0)28 2558 3782
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