[comp.os.aos] AOS/VS Modem Support

lbsrdrt@cc.brunel.ac.uk (David Thomas) (09/07/90)

Our Library system makes use of AOS/VS modem support to clear network
calls made to consult our library catalogue. We use an IAC8 connected
to a PAD. When the users quits the catalogue the IAC drops DTR and the
PAD clears the call. 

Our problem is that the IAC8 doesn't raise DTR again to be ready for
the next caller for 10 seconds, although our software is ready to
open the line again after 2 seconds. During this time incoming calls
either fail or hang.

We have AOS/VS 7.60   I'm told that if we upgrade to the latest
version (7.67 ??) there are parameters that can be set that might
help us.

Can anyone advise whether this is correct or not ?

David Thomas
Brunel University Library
Uxbridge
Middlesex
UB8 3PH

JANET email:  david.thomas@brunel.ac.uk

support@dg-rtp.dg.com (Data General Support) (09/13/90)

In article <1801@Terra.cc.brunel.ac.uk>, lbsrdrt@cc.brunel.ac.uk 
(David Thomas) writes:
|> Our Library system makes use of AOS/VS modem support to clear network
|> calls made to consult our library catalogue. We use an IAC8 connected
|> to a PAD. When the users quits the catalogue the IAC drops DTR and the
|> PAD clears the call. 
|> 
|> Our problem is that the IAC8 doesn't raise DTR again to be ready for
|> the next caller for 10 seconds, although our software is ready to
|> open the line again after 2 seconds. During this time incoming calls
|> either fail or hang.
|> 
|> We have AOS/VS 7.60   I'm told that if we upgrade to the latest
|> version (7.67 ??) there are parameters that can be set that might
|> help us.

The solution is a switch to the CHARACTERISTICS command, /THC,
which was added as of AOS/VS 7.62.  /THC takes a value in 
milliseconds, so, to solve the above problem, you'd use

      CHARACTERISTICS/THC=2000

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