[cisco-voip] RTP ports used by phones

Ed Leatherman ealeatherman at gmail.com
Tue Jan 19 11:46:08 EST 2016


I've notice this a few times bouncing on ACL, thought it was worth asking
about.

I see in numerous documentation that CUCM uses 16384 - 32767 for RTP - the
documents specifically say IP Phone to IPVMS.

I observed an 8945 Cisco phone listening on 32768 and 32769 (assuming RTP
and associated RTCP) due to access list not permitting it. Is there a doc
somewhere that shows different/expanded range of ports that Cisco phones
will use?



-- 
Ed Leatherman
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