On Wed, 2004-01-07 at 19:37, M. Matt Colgin wrote: > Configuration #1 > ---------------- > - Can our telecom company provide two ISDN BRI lines. Each ISDN line > providing 2 channels of 64kbit/s? > - What manufacturer/model of ISDN adaptor is best supported by Asterisk? > > Disadvantage: Seems to be a rare configuration based on what seems to be > antiquated technology. > > Advantage: Cost. I estimate the two ISDN BRI cards to run $100/each with > minimal investment in the telecom provisioning.
ISDN isn't necessarily antiquated. You should notice there is a lot of deployment in Europe. Another downside can be monthly cost. Like some places in Europe, you may pay a per minute fee for your calls even if they are local. ISDN may seem antiquated in the US as it wasn't aggressively rolled out anywhere. I know here in TN the PSC had to force the telco to offer it. > Configuration #2 > ---------------- > - Are there cheaper, less extensive channel banks which might be more cost > effective for our limited scalability needs? > > Disadvantage: Cost. The channel bank runs about $1700-$2000 retail with the > 8-port FXO service card. > > Advantage: Future Scalability. However, I don't perceive servicing > additional phone lines and if we did, it would most likely be done by > pulling some data channels off one of the existing T1s and sending it > directly to the Digium T100P. If you have data T1s, why aren't you looking into snagging 4 ports off of those. You just lose 64k per per line. This would allow you to use a T100P card to receive the couple of split off channels. With only 4 out of 24 channels used in the T1 line, you could push this through a channel bank and do a drop and insert on the channel bank that has 2 T1 ports like the Zhone or ADIT. This benefits also from keeping it all digital until last moment to go to your analog phones. -- Steven Critchfield <[EMAIL PROTECTED]> _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users