JoelC707
join:2002-07-09
Tucson, AZ
clubs:
| reply to AWD
Re: When is a channel bank necessary?
I wouldn't say you would choose a channel bank over a PBX, more like you would use a channel bank with an older (or newer) PBX. Older PBX's don't always support digital interfaces and would need a channel bank if you were to get a PRI to feed your PBX. Likewise a channel bank can take multiple analog circuits and output them as a digital interface for connection to a PBX or whatever you want to do, especially if that newer PBX only has digital interfaces and you only have analog coming in (for who knows what reason).
Another use for a channel bank would be if you had two PBXs to support but only one PRI. You could use a channel bank to split that single digital connection into two or more digital connections with any number of individual circuits to each. I suppose you could get a PRI (they are cheaper than buying 23 separate POTS lines) and use it for analog calls or for data use (modem or fax) and would then need the channel bank to break the PRI down. Of course you don't always need the channel bank for that either, I have a Cisco AS5200 at home that has two dual port T1 cards in it for it's dial-in connection. If you don't know what an AS5200 would be used for, think dial-up ISP; although they might have larger versions and lots of them. |
