connecting leased line modems
Bill Vermillion
bill at bilver.UUCP
Sat Oct 6 15:34:09 AEST 1990
In article <1086 at bbx.basis.com> russ at bbx.basis.com (Russ Kepler) writes:
>There is a customer of ours that desires a leased line for a
>remote terminal. Never mind the cost of leased vs. dialed, etc.
>I just can't get the damn thing to stay connected or to display
>a 'login:'!
>The gettydef on the line is the 'm' entry (should look local),
>the tty is /dev/tty1a (note the lower case 'a'). The modems
>are Hayes 9600 V.32's and their front panels indicate a
>modem<->modem connection. The connection is using a 2 wire
>leased line.
>I'm at a loss. The problem appears to be in the modem<->system
>connection - I'm flying someone out today with smart cables to
>check (did I mention the site is about 500 miles away?).
This comes from experience. You might have a BAD leased line.
I have a site that uses 3 terminal and a printer about 15 miles
from the host Xenix box. They had a 2 port Mux and some 2400bps
modems trying to attempt 9600 via compression. (Whoever set that
up should have been shot).
I put in a good mux, and we went to Trailblazers. Things got
better, but still there were times that it wouldn't connect, and
sometimes disconnect several times a day. I heard noise on the
line and called telco. Both companies (Bell & United - two
different exchanges replaced some channel boards).
Still somedays good. Somedays bad. One day (after an overnight
rain storm) it wouldn't come up until about noon. Telco took a
thorougly dead roach from the connectors.
But the average disconnect was about 6 times per day.
I FINALLY convinced them to put the TB's in a dial up mode.
Have had ONE disconnect in six weeks with dialup, opposed to 6 per
day per leased line.
I have come to the conclusion that the only thing that a leased
line gets you is a bigger phone bill.
--
Bill Vermillion - UUCP: uunet!tarpit!bilver!bill
: bill at bilver.UUCP
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