[cisco-voip] PRI 's Roll

[Jason Shearer]

Ask these questions:

1) What order are they rolling in?
2) What distribution algorithm are they using?  (top down, circular, etc)

You can test each channel if you would like by shutting #2 & #3 down and busying out all channels but one on #1.  Place test call.  Rinse and repeat till you have tested all channels.

I typically request top down from the provider and do just the opposite outbound.  If they are going top down 1,2,3 I will go outbound bottom up 3,2,1.

Jason

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of tmdvoip
Sent: Tuesday, January 05, 2010 1:56 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] PRI 's Roll

Guys:

This is my configuration
CUCM 4.2(3)sr4a (2) Cm in cluster
Cisco Unity 4.0(5.0)
Cisco 2851 Routers


Here is the situation: My client complains that external callers sometime
get an error message from our Telco Provider AT&T saying (all circuits are
busy).

I opened a ticket with the provider and they confirmed that there was a
power outage at one of their locations. Therefore, the Telco Provider AT&T
circuit has no power and our PRI goes down.

My client has 3 PRI's configured and they are supposed to roll from one PRI
to the next as call volume increases. The thing of it is my client has 3
PRI's with 23 channels each that are way-way under utilize. My question is
should the incoming calls just transition to the next PRI in the group? Am I
missing something? Is my Telco sales person says we are configured to roll
to the PRI. Why is it not rolling?

Sincerely,
Thomas Dooley
Cisco Telecommunications Administrator
Triad NC
Desk: 336-917-7125



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