[cisco-voip] Route Pattern / List / Group problems with ATT'sSoftware Defined Network

Wes Sisk wsisk at cisco.com
Tue Sep 13 12:07:01 EDT 2005


SDN IE's should only be sent over trunks that use ISDN protocols that have
that SDN IE as a valid IE

what ISDN protocols are in use on local vs LD trunks?

/Wes

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net]On Behalf Of Justin Steinberg
Sent: Tuesday, September 13, 2005 11:44 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Route Pattern / List / Group problems with
ATT'sSoftware Defined Network


We want to configure our LD route patterns to include our local PRI
circuits so that long distance calls can still be completed in the
event that our LD PRI circuits are down.

All of our branch offices use CCM 3.3(3) with MGCP gateways with local
PRIs from a local LEC and LD PRIs from ATT.  The LD PRIs with ATT are
configured with ATT's Software Defined Network (which makes
interoffice calls cheaper by sending them inbound on the LD circuits,
keeping them on ATT's network from origination to termination.)

For this to work, we have to configure our LD route patterns with
"ISDN Network-Specific Facilities Information Element" specifically:
Network Service Protocol: PRI 4ESS
Network Service: Software Defined Network

This works fine if the associated route lists/groups are ATT's
circuits.  But if we put in LEC ciruits in the mix for redundancy they
bug out with the extra info and will not process the calls with the
SDN information.

I was hoping to be able to override the route pattern information on
the MGCP gateway config but those are not there for ISDN service
options.

Anyway for me to do this?  I'm thinking maybe a duplicate route
pattern in another partition without the extra ISDN information that
is lower in priority in the CSS. I'm just not sure whether CCM will
work like that if the first route pattern can't complete calls.

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