Re: Adtran async/sync DSU 5600 with PM's

Dick St.Peters (stpeters@netheaven.com)
Thu, 28 Sep 1995 09:06:05 -0400

Michael Dillon writes:
> Tiny POP's eh? How about you put one PM2 (10 async ports) out as a POP
> with a dedicated 33.6kbps (USR Couriers) on one of the ports back to another
> async port on a local Portmaster. That gives you 9 ports at the POP for
> customers and you can do it over a 2-wire circuit rather than 4-wire
> (provided the line quality will sustain 33.6kbps)

Well, first, that 24-hour dialup costs more than a 56k line. This is
true for either a local business call or any kind of LD call, and for
the POPs it would be both.

Second, that 33.6 2-wire feed is half duplex, so the modems have to
turnaround for every packet(s)/ack. It's totally inadequate as a feed
for multiple 14.4 PPP dialups, much less 28.8.

--
Dick St.Peters,         Gatekeeper, Pearly Gateway, Ballston Spa, NY
stpeters@NetHeaven.com  Owner/operator, NetHeaven 518-885-1295/1-800-910-6671
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