[comp.os.vms] Async DECnet and MNP modems help

peter@julian.UUCP (07/23/87)

I'm trying to get a dynamic asynchronous DECnet link established between two
VMS machines.  The method of connection is a telephone line and a pair of
Microcom AX/9624c MNP-6 modems running at either 9600bps or 19200bps.

When I follow the instructions, I get the circuit set up, but after a flurry
of activity lasting perhaps 30 or 40 seconds (data transmitted in both
directions) the remote end stops talking and I see periodic polls coming
from the local system.  A SET HOST command to the remote system dies with a
message about a DECnet channel error.  Eventually I hang up the telephone
manually and try to get my async line back.

Does anyone have any experience with this kind of set up?  Has anyone tried
something similar using Serial Line IP (SLIP)?  I'm willing to abandon
DECnet and consontrate on something that will fit in better.  Am I silly to
expect it ever to work?  

Are there any parameters (delays, retransmission...) that I can set to make
this work better?  The modems will be introducing a significant delay as
they try to buffer up and compress and packetize.

Any help would be appreciated.

-- 
Peter Marshall, Data Comm. Manager
CCS, U. of Western Ontario, London, Canada N6A 5B7
(519)661-2151x6032 
pm@uwovax.BITNET; pm@uwovax.uwo.cdn; peter@julian.uucp; ...!watmath!julian!peter