[*] Telephony terms and concepts

[Sean Walberg]

I just had a chat with our telecom guy, who used to work for MTS' carrier 
group, and is familiar with the service.  He said that while BRI supports 
DID, MTS never did it because most of the people buy it for video 
conferencing and data service.

He also offered to find a knowlegable account rep if you want.  Send me 
your contact info offline, and he'll get a sales dude to call you.

Sean

On Wed, 8 Feb 2006, LES.NET (1996) INC. wrote:

> Agreed.  Good luck finding anyone at MTS who knows what BRI is.
> 
> My assuption is that since all those brave explorers who ventured into
> ISDN BRI land in the mid 90's moved to high-speed, ISDN BRI has become one
> of those products thats listed as a service, but rarely called upon.
> 
> Here's part of my knowledge base on BRI, as I too have done some research
> on it.
> 
> Both BRI+PRI are ISDN.
> 
> BRI = Basic Rate Interface
> PRI = Primary Rate Interface
> 
> A PRI has 23 Bearer (b) Channels, and one Data (D) channel.
> (23b+d)
> 
> A BRI has 2 B-Channels, and 1 D-Channel.
> (2b+d)
> 
> Both of these technologies allow you to use the BRI/PRI as either Voice or
> Data.  Of course, you must connect to another ISDN end point in order to
> do Data.
> 
> With ISDN (BRI+PRI) you can bind B-Channels together to get more bandwidth.
> 
> Generally, with a single carrier (ie: MTS, Bell) you will get 64 Kbps
> "clear-channel" for data, when making two ISDN connections talk to each
> other.
> 
> With a BRI, you can achieve 128kbps.  With a PRI, 1472kbps.
> 
> Now, with PRI's, you can have multiple DID's assigned to them.
> 
> With BRI's one would think it would be the same.  But this
> question/deduction drew gasps from MTS when I asked them about it.
> 
> MTS has three ISDN Services:
> - ISDN BRI Service
> - Measured ISDN BRI Service
> - Megalink ISDN PRI Service
> 
> ISDN BRI + Measured ISDN BRI are the same thing.
> 
> ISDN BRI Service is a flat-rate ISDN Service.
> 
> 2 B-Channels cost:
> - $117/month on a month
> - $99/month on a 1 year
> - $88/month on a 5 year
> 
> Setup is $175.00
> 
> Measure ISDN BRI Service is a..... Measure ISDN Service.
> 
> 2 B-Channels cost:
> - $49.95$/month
> - There is no term-commitment, its month-to-month
> 
> Setup is $159.15
> 
> Usage is $0.50/Hour Per B-Channel
> 
> The maximum bill for Measured ISDN is $150.00/month
> 
> Les.
> > On Tue, 7 Feb 2006, John Lange wrote:
> >
> >> And are they available as a voice service? Would they connect to an
> >> Asterisk T1 card?
> >>
> >> If they are the same price as analog lines it sure would be nicer than
> >> having an FXO card in Asterisk.
> >
> > We're ordering 2x voice BRI service from MTS for one of our clients. The
> > problem is getting a hold of anyone there that knows what BRI is.
> >
> > Also, I have not been able to find a PCI BRI card that will work with NI-2
> > or NI-3 signalling. The PC BRI cards for the most part support EuroISDN
> > and NI-1 if you're lucky. We're connecting our BRI's to a Cisco
> > VIC2-2BRI-NT-TE module and running SIP from there to Asterisk.
> >
> > If you want MTS pricing I'll get a hold of it for you, but it was very
> > reasonable.
> >
> > _______________________________________________
> > Asterisk mailing list
> > Asterisk at muug.mb.ca
> > http://www.muug.mb.ca/mailman/listinfo/asterisk
> >
> 
> 
> 

-- 
Sean Walberg <sean at ertw.com>                    http://ertw.com