[cisco-voip] RTP ports used by phones

[Ed Leatherman]

Come to think of it, the session was between an IOS MGCP gateway and the
8945 - perhaps something the gateway is trying to send to the phone that I
dont realize.

On Tue, Jan 19, 2016 at 11:54 AM, Ryan Huff <ryanhuff at outlook.com> wrote:

> 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: ryanthomashuff at outlook.com
>
> Spark: ryanthomashuff at outlook.com
>
> Twitter: @ryanthomashuff <http://twitter.com/ryanthomashuff>
>
> LinkedIn: ryanthomashuff <http://linkedin.com/in/ryanthomashuff>
>
> Web ryanthomashuff.com
>
>
> ------------------------------
> *From:* cisco-voip <cisco-voip-bounces at puck.nether.net> on behalf of Ed
> Leatherman <ealeatherman at 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
>



-- 
Ed Leatherman
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