Hi!
I'm having some troubles with calls from iPhone over VoLTE / Wifi. No ring back tones are played, just complete silence until the other end answers.
The telco are referring to RFC5009 and https://datatracker.ietf.org/doc/html/rfc5009#section-8 but I can't understand how to add support for this in FreeSWITCH?
I've managed to get the SIP header "P-Early-Media: supported" but it doesn't help.
When turning off VoLTE / Wifi calls it works, it's just when using VoLTE...
Br - Tomas
I'm having some troubles with calls from iPhone over VoLTE / Wifi. No ring back tones are played, just complete silence until the other end answers.
The telco are referring to RFC5009 and https://datatracker.ietf.org/doc/html/rfc5009#section-8 but I can't understand how to add support for this in FreeSWITCH?
I've managed to get the SIP header "P-Early-Media: supported" but it doesn't help.
When turning off VoLTE / Wifi calls it works, it's just when using VoLTE...
Br - Tomas