I have an old setup based in Asterisk 1.8. The carrier is accepting Ulaw in the initial invite, but immediately the call is established they send a re-invite to change to Alaw. This doesn’t get transcoded and the user gets no audio from after the re-invite

Is/was this a problem for asterisk changing the codec and transcoding during the call? The user is only offering ulaw.

Regards,

rik