[cisco-voip] R: Use Trusted relay point info

[Mauro Celli]

It may be a solution , but there are some problems:
1)i need a router with many PVDM for transcoding, instead if i use MTP with
trusted relay point i can use router with software only MTP
2)All phones is in G.729 (intraregion and interregion), if i change codec,
users feel differences in quality and surely I will do note :\

It seems strange that cisco has not thought of a way to inserirt an MTP
automatically or via a "region" when the phones does not see...

Da: Adam Frankel [mailto:adamgfrankel at gmail.com] 
Inviato: mercoledì 24 agosto 2016 13:24
A: Mauro Celli <mauro.celli at 2000net.it>; cisco-voip at puck.nether.net
Oggetto: Re: [cisco-voip] Use Trusted relay point info

You can setup a transcoder at Site A and set the regions as follows:
Site A <----> Site B (7kbps / G723)
Site A<---->Transcoder (G729 or higher)
Site B<---->Transcoder (G729 or higher)
Because the region config is set to G723, a transcoder will be invoked.  The
Region config between the transcoders and each site will be checked.   If
neither side is talking G711 to the transcoder you will need a universal
transcoder
(http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/7_1_5/cuc
m-rel_notes-715.html#wp1768778).  With CUCM 9.x+ you can accomplish
something similar with Audio Codec Preference Lists.
--
Adam

On 8/24/2016 3:29 AM, Mauro Celli wrote:
Hi,
i have three  site, 
Cucm is in SiteA
SiteB and SiteC have a vpn to SiteA
SiteB and SiteC they can not have a vpn between them for safety reasons.

To make calls from SiteB and SiteC, i have to enable "use trusted relay
point" for all phone of B-C sites, and insert MTP.
But if i enable this TRP, when a SiteB phone call another SiteB phone, MTP
is inserted in call and i consume wan bandwith.
How i can limit trusted relay point only when it is really necessary? I have
CUCM 8.6
Thanks




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