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Extension Mobility UDP Port Range

sgamer
Level 1
Level 1

I am trying to lock down the VLANs where our CCMs are located and did a trace of login/logout via EM service.

After a few logins, the resulting trace showed that the phone was comunicating with CCM via a destination UDP port range. So far I've identified ports 3592 through 3673.

Several searches of CCO did not turn up a document that describes what ports should be used for EM. Does anyone have that information?

2 Replies 2

lyanes
Cisco Employee
Cisco Employee

Please look at the following link:

Good information about the UDP and TCP ports used by CallManager.

http://www.cisco.com/warp/public/788/AVVID/ccm_tcp_udp_ports.html

Luis.

Luis,

I thought I replied to this the other day but I guess it didn't take. My response was that I'm aware of this document but it doesn't mention anything about the UDP range of ports I saw in the trace. I'm implementing the ACL tommorrow morning and permitting the UDP range 3000 to 4000 just to be safe but I would like confirmation from Cisco on what ports are actually used. This is an important function and I can't believe Cisco doesn't have it published somewhere.