connecting leased line modems

[Bill Vermillion]

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