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<p>Ed,</p>
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<p><a title="Ctrl+Click or tap to follow the link" href="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">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</a><br>
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<p>Could it be that you're seeing something from the ephemeral port range 32768 – 61000?</p>
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<p>Thanks,<br>
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= Ryan =
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<p>Email: ryanthomashuff@outlook.com</p>
<p>Spark: ryanthomashuff@outlook.com</p>
<p>Twitter: <a id="LPNoLP" href="http://twitter.com/ryanthomashuff">@ryanthomashuff</a><br>
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<p>LinkedIn: <a id="LPNoLP" href="http://linkedin.com/in/ryanthomashuff">ryanthomashuff</a><br>
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<p>Web <a id="LPNoLP" href="http://ryanthomashuff.com">ryanthomashuff.com</a></p>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> cisco-voip <cisco-voip-bounces@puck.nether.net> on behalf of Ed Leatherman <ealeatherman@gmail.com><br>
<b>Sent:</b> Tuesday, January 19, 2016 11:46 AM<br>
<b>To:</b> Cisco VOIP<br>
<b>Subject:</b> [cisco-voip] RTP ports used by phones</font>
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<div dir="ltr">I've notice this a few times bouncing on ACL, thought it was worth asking about.
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<div>I see in numerous documentation that CUCM uses 16384 - 32767 for RTP - the documents specifically say IP Phone to IPVMS.</div>
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<div>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?</div>
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<div class="gmail_signature">Ed Leatherman<br>
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