[cisco-voip] Provider not recognizing my busy PRI?

c3voip c3voip at nc.rr.com
Wed Jul 18 11:01:21 EDT 2007


It's funny that you say that.  We have 2 providers and one recognizes when
the PRI's are set OOS using ChangeBChannelMaintenance and the other won't.

What command would I use to set b-channels OOS on a CMM PRI port running
MGCP? Also is there a command to tell which channels are on active calls? 

Thanks,
-C

-----Original Message-----
From: Ryan Ratliff [mailto:rratliff at cisco.com] 
Sent: Wednesday, July 18, 2007 10:49 AM
To: c3voip
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Provider not recognizing my busy PRI?

ChangeBChannelMaintenance does not actually set the b-channel busy on  
your end.  It just sets it busy internal to CallManager so that CM  
wont' use the b-channel.  It's intended to be used with fractional PRIs.

If you want some b-channels busied out use commands on the router to  
do so.

-Ryan

On Jul 18, 2007, at 10:28 AM, c3voip wrote:

I have a multi-PRI trunk group from my PSTN provider that rolls to  
the next PRI when the first one fills up with incoming calls.  I was  
doing some testing last night with the MGCP Change B-Channel  
Maintenance Status fields in Service Parameters.  I successfully  
busied out the first PRI and then was unable to make inbound calls to  
my numbers (call cannot be completed recording).  I then cleared the  
PRI and was able to take calls again.  So I shutdown the serial  
interface and was able to take calls on the next PRI.



Is there something wrong with my PRI setup that would cause my  
provider to not recognize when I busy out my B-channels?  Is there  
something that I need to request from my provider in order for them  
to recognize my busy outs?





Thanks,

-C



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