Cheat code
Ports cheat sheet
CUCM 15 port chapter. Confirm the release before you open a firewall.
- 5060 SIP · 5061 SIP TLS · 2000 SCCP · 2443 secure SCCP
- 69 TFTP · 6970 HTTP files · 3804 CAPF
- 2427 MGCP · 1720 H.225 · 2748 CTI · 2749 CTI TLS · 8443 AXL
- 16384–32767 RTP on devices · CUCM uses 24576–32767
- 8090 gateway recording · 443 Smart Licensing to CSSM · 123 NTP · 22 SFTP
Source: CUCM 15 TCP and UDP port usage. This sheet is a note, not that chapter.
Sources and go deeper
Opened 2026-10. A row marked confirm has no link, because that page was not verified.
- Protocol and ports. CUCM 15 TCP and UDP port usage last checked 2026-10
- Protocol and ports. Cisco Expressway IP port usage (X14.3 and X15.0) last checked 2026-10
- Protocol and ports. Port reference for Webex Calling last checked 2026-10
- Protocol and ports. IANA service names and port numbers last checked 2026-10
- Protocol and ports. IANA SIP parameters last checked 2026-10
- Protocol and ports. IANA RTP parameters last checked 2026-10
- Community. Cisco Community, Collaboration knowledge base last checked 2026-10
- Wikipedia. Real-time Transport Protocol (Wikipedia) last checked 2026-10