[net.dcom] Hooking Unix to Develcon Dataswitch

derek (06/08/82)

I would like to configure the ports on our Develcon dataswitch
to allow outgoing calls.  If I do not make the ports answer only,
the when getty raises carrier by opening the tty line, the switch
sees this and connects the line to an SPS.  After 15 seconds, the
dataswitch will drop carrier.  Getty takes this as a terminal being
turned off.   Getty will then open the tty line again and the cycle
is repeated.  Has anyone out there gotten aroung this problem?

  Derek Andrew
  Univ of Saskatchewan

wjb (06/08/82)

We eliminated the signal cycle problem at our site by changing
the init entry in /etc/inittab from 2 to 9.  This has the effect
of ignoring the signals generated by Develcon at the UNIX end.
Our only problem now is having UUCP say the correct things to
Develcon to establish a path through the Dataswitch.
					Bill Beblo
					Bell Labs - Murray Hill
					(201)-582-7365

dale (06/08/82)

We have a version of uucp that knows its way through the dataswitch.
The problem is not too difficult. One must be able to specify delay,
and the transmission of arbitrary sequences which my not end with a
carriage return/newline in L.sys

sparky (06/08/82)

	What dale said in Article 40 is correct. However, I think what you
	are looking for is a general approach. The approach you should
	take is that you have to permanently assign lines from the com-
	puter to the dataswitch as outgoing only. This means that the
	"getty"s must be turned off. Then when you "open" the line, DTR
	goes up and the switch responds(hopefully) with CD. This completes
	the open and then you either do uucp/cu stuff or your own. Hope this
	helps.

	cbosg!sparky alias Norm Thompson