| ID | Description |
|---|---|
| 3261 | SIP: Session Initiation Protocol |
| 3550 | RTP: A Transport Protocol for Real-Time Applications |
| 4145 | TCP-Based Media Transport in the Session Description Protocol (SDP) |
| 4566 | SDP: Session Description Protocol |
| 4571 | Framing RTP and RTCP Packets over Connection-Oriented Transport |