[cisco-voip] MGCP ISDN call failing due to calling party plan beingwrong

[Mike Lay (milay)]

The fact that it follows the PRI would support this being a telco issue.
I would verify that Q931 that is sent out of the GW to ensure the CCM &
GW are correct for all call types. Then I would enquire what path all 3
PRI's take thru the telco network, one may follow a different
route/switch that is modifying the number plan.

Mike 

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Erick Bergquist
Sent: Monday, November 27, 2006 3:28 PM
To: ciscovoip
Subject: [cisco-voip] MGCP ISDN call failing due to calling party plan
beingwrong

Hi,

I have a strange issue, where the telco is refusing a 411 call on 1 out
of 3 PRIs. All 3 are set up the same on the CCM side. The called party
plan and type is set to unknown and unknown.  411 calls work on the
other 2 PRIs fine but not the one. On the one, the carrier is seeing the
calling party plan as being private_numbering_plan with an abrreviated
number.  The router Q931 and CCM Detailed traces show Unknown and
Unknown for both of those on all the calls. If we swap just the T1 PRI
cables between router interfaces, the problem follows the PRI circuit -
not the ports on gateway. 

Another odd thing is, on a working LD call carrier saw that with a
calling party plan of National. The gateway configuration pages in CCM
are set for unknown for called party number.  MGCP has been reset a few
times, and config download to refreshed from the router as well. The CCM
servers were rebooted as well 

I have been to telco on this a couple times, and escalated, and they
keep seeing the same thing where the call fails because of private
numbering plan. We changed the called number plan to all the other
settings also and nothing seems to help, and the CCM Detailed and q931
debugs show the information correct as it is configured at time. 

Has anyone seen anything like this before?


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