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/cucm-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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