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Joined: Jul 2011
Posts: 188
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Member
Joined: Jul 2011
Posts: 188 |
I have 3 PRI's in the same trunk group. There are 22 B channels on the first one, 20 on the second and 20 on the third. Should there not be one A channel on each T1 and 23 B channels? It's been a long time since I worked on this stuff and I don't recall exactly how it all works. I have an old G3siV11, not that it makes any difference.
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Joined: Jan 2005
Posts: 15,394 Likes: 17
Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,394 Likes: 17 |
A PRI should consist of 23 B (bearer) channels and one D (data) channel. There isn't an A channel. I'm a bit confused as to why two of your PRIs have only 20 channels though.
Ed Vaughn, MBSWWYPBX
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Joined: May 2007
Posts: 5,059 Likes: 6
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,059 Likes: 6 |
A PRI should be 23B+D (23 B Channels and1 D Channel), unless it's European format, in which case it's 30B +1D.
Sam
"Where are we going and why are we in this hand basket?"
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Joined: May 2007
Posts: 5,059 Likes: 6
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,059 Likes: 6 |
"Where are we going and why are we in this hand basket?"
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Joined: Jul 2011
Posts: 188
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Member
Joined: Jul 2011
Posts: 188 |
There wouldn't be a limitation due to the card in my Definity would it. Should I redirect this to the Avaya post?
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Joined: Jan 2012
Posts: 28
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Joined: Jan 2012
Posts: 28 |
With NFAS it might even be slightly better than 3 D channels, you could probably reclaim one and cut it down to 1D plus one backup timeslot for it.
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Joined: Jul 2011
Posts: 188
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Joined: Jul 2011
Posts: 188 |
Those terminate on a TN767 E board. Should I redirect these questions to the Avaya forum?
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Joined: Aug 2004
Posts: 9,172 Likes: 22
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Admin
Joined: Aug 2004
Posts: 9,172 Likes: 22 |
I have PRI's with 12,16, 20,and 23 B channels. It's popular down here particularly if you different trunk groups and just looking to save a few bucks with the cost of reduced B channels.
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Joined: Jul 2011
Posts: 188
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Member
Joined: Jul 2011
Posts: 188 |
According to my AT&T Rep, we don't pay per B channel, just for the T1 ($645/mo). Not sure I understand that, in light of the short number of B channels I'm paying for. I enailed him to find out why we aren't maxed out on B channels for the T1's and still have no response.
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Joined: Jul 2011
Posts: 188
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