[Freeswitch-users] Confused about codecs?

Sergey Safarov s.safarov at gmail.com
Mon Sep 27 05:47:37 UTC 2021


Look like on the other side used Asterisk.
In such a case, I offer only one codec and from another side, I receive a
response with only one code.

Sergey

On Sun, Sep 26, 2021 at 11:40 PM Allan Kristensen <ak at hejdu.dk> wrote:

> Hello,
>
> We are getting these weird log messages from FS and I'm a little uncertain
> what they are (there are thousands being logged), can someone clarify?
>
> September 23rd 2021, 10:35:40.849 ms-euc1-1a
> 28423364-1c49-11ec-b0ec-e3438dde9495 2021-09-23 08:35:40.844181 [WARNING]
> switch_core_media.c:3305 Changing current codec to PCMU (payload type 0).
> September 23rd 2021, 10:35:40.749 ms-euc1-1a
> 28423364-1c49-11ec-b0ec-e3438dde9495 2021-09-23 08:35:40.744202 [WARNING]
> switch_core_media.c:3305 Changing current codec to PCMA (payload type 8).
> September 23rd 2021, 10:35:40.669 ms-euc1-1a
> 28423364-1c49-11ec-b0ec-e3438dde9495 2021-09-23 08:35:40.664168 [WARNING]
> switch_core_media.c:3305 Changing current codec to PCMU (payload type 0).
> September 23rd 2021, 10:35:40.569 ms-euc1-1a
> 28423364-1c49-11ec-b0ec-e3438dde9495 2021-09-23 08:35:40.564190 [WARNING]
> switch_core_media.c:3305 Changing current codec to PCMA (payload type 8).
> September 23rd 2021, 10:35:40.489 ms-euc1-1a
> 28423364-1c49-11ec-b0ec-e3438dde9495 2021-09-23 08:35:40.484194 [WARNING]
> switch_core_media.c:3305 Changing current codec to PCMU (payload type 0).
> September 23rd 2021, 10:35:40.389 ms-euc1-1a
> 28423364-1c49-11ec-b0ec-e3438dde9495 2021-09-23 08:35:40.384180 [WARNING]
> switch_core_media.c:3305 Changing current codec to PCMA (payload type 8).
> September 23rd 2021, 10:35:40.309 ms-euc1-1a
> 28423364-1c49-11ec-b0ec-e3438dde9495 2021-09-23 08:35:40.304190 [WARNING]
> switch_core_media.c:3305 Changing current codec to PCMU (payload type 0).
>
> I'm thinking it's because we are receiving RTP packets with both types
> from remote?
>
> It only happens for a specific provider, so I'm thinking it's them, I just
> need to tell them the problem is.
> During codec negotiations we offered PCMA + PCMU and the SDP response from
> them also had PCMA + PCMU, that means we can choose what we want right? not
> that they should send us both? ;-)
>
> Thank you...
>    Allan
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