[Freeswitch-users] Confused about codecs?

[Allan Kristensen]

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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