[asterisk-users] Disconnection supervision: what about PBX

[Trevor G. Hammonds]

> Stephen Bosch wrote:
>> Are BRI circuits what phone companies call "digital" lines for use
>> with digital sets, such as with digital Centrex?
>>
>> I'm not aware that Telus even offers BRI.
>>
>> Sorry -- BRI is ISDN, not digital Centrex.
>>
>> I'm still not aware that Telus even offers ISDN anymore :)
> 
> ...and by that I mean ISDN BRI ;)
> 
> -Stephen-

Throughout most of the United States, "Digital Centrex" or "CentrexIS" is
ISDN as part of a Centrex group.  If the circuit is meant for a single
device, it would be a BRI.  If the circuit is "Hi-Cap" or meant to be hooked
up to a PBX or the like, it would be a PRI.  

I am not that familiar with Telus, but what Bell is calling "Digital Voice"
service is merely VoIP over one of their DSL connections.  While I know that
both companies offer Centrex over PRI, I am unsure if either company
supports BRI widely anymore.  I know BRI service is available, and most of
their switches are capable of offering BRI circuits.  For example, digital
secretarial enhanced key telephone sets are ISDN phones that work via a BRI.


In my experience, most telcos in the US and Canada will not tell you about
BRI unless you specifically ask.  And if you do, they shuffle you off to
another department where they may or may not know how to properly provision
the circuit.  Somehow, all the LECs in North American look at BRI as a
data-only service and never really saw the advantages of offering it to
voice-only customers.  As such, now that 128k (or 144k) is too slow of a
data connection for most, BRI has just been passed by.  Such a shame...

		Trevor Hammonds