[cisco-voip] Avoiding bounces with overlapping ranges

[Bob Zanett (US)]

Do not let your PBX trunks on CUCM see themselves.  That is do not let the CSS on the trunks see the route patterns that send calls back to the PBX.

Bob

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Madziarczyk, Jonathan
Sent: Thursday, September 02, 2010 1:12 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Avoiding bounces with overlapping ranges

So as we're migrating off of our antique PBX we have a problem with bouncing calls.

PSTN -> CUCM -> Gateway(MGCP/QSIG) -> PBX

Call comes in for extension 8011, its not on the CUCM, there's a rule for unknown extensions in the 80xx range to go to the PBX.  The PBX gets the call, doesn't show it on it's list of ports, then sends it up the chain (back to the CUCM)...then the cycle begins.  It eventually fills up the ports on our Gateway and they finally get a busy signal (3-10 sec later) and the ports clear again.

I'm not about to mess with PBX any more than I have to, so without "fixing" the PBX, how can I adapt the CUCM to be smarter with specific number overlaps?





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