Dennis Barnes wrote:

> We have a remote campus which has been operating quite successfully
> with a
> Codex 6015 stat mux which provides 16 ports, 3 of which are configured
> as
> spooled printers.  The campus has experienced phenomenal growth and we
> have
> purchased an Infotron Commander 32 in order to expand access to our
> HP-3000
> series 957.  We have a DTC-48 and we're trying to use LaserJet II, III
> and
> IV as spooled printers on a type 18 port.
>
> So far, we have been unsuccessful at getting the spooled printers to
> work.
>  We've tried various configurations, but the flow control seems to
> fail
> between the local multiplexer and the host.  The result is lost pages
> in any
> report longer than six or seven pages.  The parity settings available
> on the
> Infotron mux are odd, even, space, mark.  LaserJets seem to expect no
> parity
> and that is how the Codex mux was set.
>
> Is anyone using Infotron multiplexers with an HP-3000?  If so, have
> you
> solved the dilemma I've described?
>
> Perhaps there is another multiplexer vendor who can handle more than
> 16
> ports and spooled printers?
>
> Any help would be greatly appreciated.  Fall registration will be upon
> us
> soon, and we need to have a solution in place before it begins.
> Thanks.
>
> Dennis Barnes
> Director of Computer Services
> Wharton County Jr. College
> 911 Boling Hwy.
> Wharton, TX 77488
>
> Internet: [log in to unmask]
> Faxnet:        (409) 532-6545
> MaBellnet:     (409) 532-6329

  Dennis,
A shot in the dark, but it is very important to have flow control
enabled on stat-mux's since the implementation of DTC's.  The old
configuration on Micom's, Gandalfs etc. was to disable flow control for
spooled printers.  Not so with MPEix dependent on XON/XOFF.

Chris Hill