[cisco-voip] loopback SIP trunk for failover calls

Brian Meade bmeade90 at vt.edu
Tue Apr 29 14:01:25 EDT 2014


I believe that method should work similarly.  You could even try adding
CUCM nodes as H.323 gateways even.  I've seen some people do it with MGCP
PRIs and crossconnect between 2 PRI ports.  There's a lot of ways to
accomplish it.

Brian


On Tue, Apr 29, 2014 at 1:56 PM, Lelio Fulgenzi <lelio at uoguelph.ca> wrote:

> OK ... this just clicked. It doesn't have to be a SIP trunk. Can I create
> a non-gatekeeper Intercluster trunk loopback?
>
> ------------------------------
> *From: *"Lelio Fulgenzi" <lelio at uoguelph.ca>
> *To: *"Cisco VOIP" <cisco-voip at puck.nether.net>
> *Sent: *Tuesday, April 29, 2014 1:53:34 PM
> *Subject: *loopback SIP trunk for failover calls
>
>
>
> We've built SIP trunks to our Nuance Speech Attendant servers, but have
> been told that in order to ensure failover in the event the servers are not
> responding, we need to build a loopback SIP trunk back to the CallManager
> servers so the call is handled.
>
> I'm not sure of all the SIP parameters we need, I'm gonna start with
> defaults, but heeding the old rule of "never allow a trunk to dial a number
> that can reach itself" I was going to do the following:
>
>    - create a SIP trunk with all cluster members as Destinations
>    - check "Run On All Active Unified CM Nodes"
>    - create a "SIP Loopback" partition and put only that partition into a
>    "SIP Loopback" search space
>    - in the "SIP Loopback" partition, create a translation for each route
>    pattern with the failover destination
>
> Any thoughts, will this give me what I need?
>
>
> Thanks, Lelio
>
>
>
> ---
> Lelio Fulgenzi, B.A.
> Senior Analyst, Network Infrastructure
> Computing and Communications Services (CCS)
> University of Guelph
>
> 519‐824‐4120 Ext 56354
> lelio at uoguelph.ca
> www.uoguelph.ca/ccs
> Room 037, Animal Science and Nutrition Building
> Guelph, Ontario, N1G 2W1
>
>
>
> _______________________________________________
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>
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