Stephen Bosch wrote: > Stephen Bosch wrote: >> Trevor G. Hammonds wrote: >>> Yuan, >>> Well engineered analogue PBXs typically do not use standard loop start >>> subscriber lines. When digital trunks are not an option, they use analogue >>> PBX and/or DID trunks. At the very least, ground start circuits are >>> preferred to avoid "glare". The best call quality for analogue is achieved >>> by using four-wire E&M trunks that provide answer and disconnect >>> supervision. There are two-wire trunks (which are probably more common), as >>> well as different signalling methods. These trunks require special >>> interface hardware, and I am unaware of any that work with Asterisk. As the >>> cards are typically very expensive, it is usually better to go with digital >>> if you require that functionality. It would be nice to see a BRI interface >>> for Asterisk that works in North America, as BRI circuits are often >>> comparable in price to analogue lines. >> 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- _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users