VoIP port reference
A network port is a numbered path used by a service. Search by a service name, protocol, or port number to find common VoIP examples.
Do not copy this list straight into a firewall. Your phone system, provider, and phones may use different ports or ranges.
Searchable VoIP port reference
Check your provider or phone-system guide before changing a firewall. These are common examples, not rules for every system. The IANA registry is the source for registered service ports. The RTP row is only an example media range. Last reviewed: .
| Service | Protocol | Port or range | What it does |
|---|---|---|---|
| SIP signalling | UDP/TCP | 5060 | Common unencrypted SIP signalling port. |
| SIP over TLS | TCP | 5061 | Encrypted SIP signalling; provider configuration may vary. |
| RTP media | UDP | 10000–20000 | Typical PBX media range; confirm the exact PBX setting. |
| STUN | UDP/TCP | 3478 | NAT discovery and traversal. |
| TURN over TLS | TCP | 5349 | Relayed media when direct traversal is unavailable. |
| DNS | UDP/TCP | 53 | Required to resolve SIP hosts and services. |
Before you change a firewall
Use the port list supplied by your provider or phone system. Where possible, allow only the required source and destination addresses. Test call setup, two-way audio, return traffic, Network Address Translation (NAT), and any Session Border Controller (SBC) after a controlled change.
Related: RTP port ranges, NAT and firewall troubleshooting, and VoIP protocols.