[cisco-voip] PRI 's Roll

[Lelio Fulgenzi]

for MGCP gateways you can check out the CallManager service parameter: "Change B-Channel Maintenance Status". for H323, there are some IOS commands - sorry, they escape me right now. 

but this might help 

https://supportforums.cisco.com/docs/DOC-4989;jsessionid=BFF2F0C5CC2BFC0BDE6C10508B0C8A4C.node0 

this is for v4.1(3) but I suspect something similar is available for v5,6,7 
--- 
Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN) 
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
"Bad grammar makes me [sic]" - Tshirt 


----- Original Message ----- 
From: "tmdvoip" <tmdvoip at gmail.com> 
To: "Jason Shearer" <jshearer at amedisys.com>, cisco-voip at puck.nether.net 
Sent: Wednesday, January 6, 2010 11:10:22 AM GMT -05:00 US/Canada Eastern 
Subject: Re: [cisco-voip] PRI 's Roll 

Jason S. 

I liked your idea about testing each channel. 

These are your words below. 

"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 hate being so ignorant on this topic, but how would I busy out all the 
other channels? 

For example, just keep dialing in bound calls from various phones? 

I do know how to shut down PRI/GW #2 and #3. 

Also, let me make sure I have my terminology right. 

The PRI/GW contains the channels IE 23 usable for ea PRI. 
I have 3 PRI's/GW equals 69 channels. Right? 


Thanks, TMD 

-----Original Message----- 
From: Jason Shearer [mailto:jshearer at amedisys.com] 
Sent: Tuesday, January 05, 2010 3:03 PM 
To: tmdvoip; cisco-voip at puck.nether.net 
Subject: RE: [cisco-voip] PRI 's Roll 

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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