# of PRI's on a BCM 450

[swfl]

How many PRI's can a BCM 450 hold? We needed 3 each at two sites, and our distributor said we needed a 450 versus a 400 because the 400 could only hold 2.

 

[cook1082]

Both can have 3 PRI's.

 

[option11newby]

The BCM450 can support 5 but the last one would not be fully configured (dependant on which location you are in).

The BCM400 system can support 3, obviously take into account what other applications etc are running on them.

Hopes this helps

NCSS, NCDS, NCTS

 

[swfl]

Would this be including the expansion module?(On both)

 

[swfl]

So 3 or almost 5 for the 450? Would anyone be able to point me to the documentation that explains this?

 

[DBrewsky]

According to the BCM450 documentation, it can support 130 total trunks.

Using my math.. 130/23=5 with 15 leftover.. So.. 5 PRIs with a partial 6th??


--DB

 

[telcodog]

BCM450 can handle 6 PRIs with the last being partial. That's North America. It supports 5 E1s in Europe, the 5th one being partial as well for a maximum total of 130 trunks.

That's straight from the BCM450 Delta course documentation. I have no idea where it is in the technical documentation though. You would probably have better luck getting a marketing document from Nortel's website.

 

[SNSSMIS]

On other pbx systems only one D Channel supplies between all PRI on the system. BCM may be different. So you may be able to get 71 talk paths using 3 PRI.
Correct me if the BCM is unigue and does not work like this.
The Vendor always tells me "it is not a PBX, its a key system" I feel it is a hybrid like all the others.

 

[telcodog]

What you are referring to is NFAS and the BCM does not support this. Each PRI has to have its own D-channel. Clocking is fairly straight forward. One of them is set to Primary external, a backup one (not thru NFAS) is set to Secondary external and all the rest are set to Internal. I've done this many times and it works fine.