It's probably best if you read the logic[1]. There's an entire comment that
talks about how it works.

[1]
https://github.com/asterisk/asterisk/blob/20/res/res_rtp_asterisk.c#L8158

On Mon, Apr 17, 2023 at 7:10 PM David Cunningham <dcunning...@voisonics.com>
wrote:

> 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 <jc...@sangoma.com> wrote:
>
>> On Tue, Feb 28, 2023 at 9:51 AM Joshua C. Colp <jc...@sangoma.com> wrote:
>>
>>> On Tue, Feb 28, 2023 at 9:50 AM David Cunningham <
>>> dcunning...@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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>
>
>
> --
> David Cunningham, Voisonics Limited
> http://voisonics.com/
> USA: +1 213 221 1092
> New Zealand: +64 (0)28 2558 3782
> --
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-- 
Joshua C. Colp
Asterisk Project Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
-- 
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