RTP Payload Formats¶

There are plenty different RTP payload formats around

Known Formats¶

GSM-FR as per IETF RFC 3551¶

GSM-FR as per ETSI TS 101 318¶

GSM-EFR as per IETF RFC 3551¶

GSM-EFR as per ETSI TS 101 318¶

GSM-HR as per IETF RFC 5993¶

GSM-HR as per ETSI TS 101 318¶

AMR as per IETF RFC 4867¶

AMR-WB as per IETF RFC 4867¶

Audio at various Interfaces¶

SIP-I based CS (closest to what osmo-sip-connector offers to the outside world)¶

• AMR as per RFC 4867
• EFR as per RFC 3551
• FR as per RFC 3551
• HR as per RFC 5993
• PCMA as per RFC 5993
• PCMU as per RFC 3551
• audio/telephone-event as per RFC 4733

3GPP AoIP¶

It's surprisingly hard to find where the RTP payload details for AoIP are specified...