[cisco-voip] [External] CUCM SIP trunk redundancy with multiple CUBES

[Johnson, Tim]

I have the same setup, but I'm not sure we've run into that scenario. From Google, it looks like you could adjust the Route Plan settings under Service Parameters (Call Manager) to continue routing on user busy flag. The description of the option speaks to intracluster routing, but from a few forum posts, it sounds like it applies to regular SIP trunk routing also.

That said, with it sending back a 503, I'm not sure this is going to help. Curious what you figure out though.

From: cisco-voip <cisco-voip-bounces at puck.nether.net> On Behalf Of Matthew Huff
Sent: Thursday, March 10, 2022 10:12 AM
To: cisco-voip at puck.nether.net
Subject: [External] [cisco-voip] CUCM SIP trunk redundancy with multiple CUBES

We have two cisco ISR 4331 Cube gateways in two different locations. I want to be able to route calls to both devices (preferably round-robin). I have the router pattern going to a trunk with both cubes defined (with sip options keep-alive configured). The issue we are having is that if the call is made to CUBE1 and the associated outbound dial-peer in in busyout, the CUBE returns 503  Service unavailable and CUCM doesn't try CUBE2. What am I missing?

Matthew Huff | Director of Technical Operations | OTA Management LLC

Office: 914-460-4039
mhuff at ox.com<mailto:mhuff at ox.com> | www.ox.com<http://www.ox.com>
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