Information Technology Reference
In-Depth Information
Port
Purpose
5061 (TCP and UDP)
Secure SIP (SIPS) phone.
RTP, Secure RTP (SRTP) (Note: CUCM only uses 24576-32767, although other
devices use the full range.)
16384-32767 (UDP)
47, 50, 51 GRE, ESP, AH.
IP protocols numbers.
500 (UDP)
IKE.
69, then Ephemeral (UDP)
TFTP.
1719 (UDP)
Gatekeeper (H.225) RAS.
1720 (TCP)
H.225 signaling services for H.323 gateways and Intercluster Trunk (ICT).
Ephemeral (TCP)
H.225 signaling services on gatekeeper-controlled trunk.
Ephemeral (TCP)
H.245 signaling services for establishing voice, video, and data.
2001 (TCP)
Upgrade port for 6608 gateways with CUCM deployments.
2002 (TCP)
Upgrade port for 6624 gateways with CUCM deployments.
2427 (UDP)
MGCP gateway control.
2428 (TCP)
MGCP backhaul.
5060 (TCP and UDP)
SIP gateway and Intercluster Trunk (ICT).
5061 (TCP and UDP)
Secure SIP (SIPS) gateway and Intercluster Trunk (ICT).
RTP, SRTP. CUCM only uses 24576-32767, although other devices use the full
range.
16384 - 32767 (UDP)
2444 (TCP)
CTL provider listening service in CUCM.
2748 (TCP)
CTI application server.
2749 (TCP)
TLS connection between CTI applications (JTAPI/TSP) and CTIManager.
2789 (TCP)
JTAPI application server.
2912 (TCP)
Cisco Unified Communications Manager Assistant server (formerly IPMA).
Cisco Unified Communications Manager Attendant Console (AC) JAVA RMI
Registry server.
1103 -1129 (TCP)
1101 (TCP)
RMI server sends RMI callback messages to clients on these ports.
Attendant Console (AC) RMI server bind port. RMI server sends RMI messages
on these ports.
1102 (TCP)
