Ed,
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/10_0_1/CUCM_BK_T537717B_00_tcp-port-usage-guide-100/CUCM_BK_T537717B_00_tcp-port-usage-guide-100_chapter_01.html Could it be that you're seeing something from the ephemeral port range 32768 - 61000? Thanks, = Ryan = Email: ryanthomash...@outlook.com Spark: ryanthomash...@outlook.com Twitter: @ryanthomashuff<http://twitter.com/ryanthomashuff> LinkedIn: ryanthomashuff<http://linkedin.com/in/ryanthomashuff> Web ryanthomashuff.com<http://ryanthomashuff.com> ________________________________ From: cisco-voip <cisco-voip-boun...@puck.nether.net> on behalf of Ed Leatherman <ealeather...@gmail.com> Sent: Tuesday, January 19, 2016 11:46 AM To: Cisco VOIP Subject: [cisco-voip] RTP ports used by phones 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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