Protocol Port Numbers (Q119)
The information in this article applies to:
Each of the protocols used in VoIP have one or more well-known port numbers associated with them. The table below provides a complete list of such port numbers.
| Port # | Protocol |
|---|---|
| 1718 | H.323 RAS (Multicast Discovery) |
| 1719 | H.323 RAS (Unicast) |
| 1720 | H.323 Call Signaling (TCP) |
| 2099 | H.501 Border Element Signaling (H.225.0 Annex G) |
| 2427 | MGCP |
| 2517 | H.323 Call Signalling (UDP, H.323 Annex E) |
| 2944 | H.248 |
| 5060 | SIP |
For a complete list of port numbers for all IP-based protocols, please refer to the port number assignments page as IANA.