🚀 go-pugleaf

In <1992Aug7.224514.12152@parc.xerox.com> jellinek@Xerox.com (Herb Jellinek) writes:


>Hi,
>	After much running around and many meetings with 'experts,' I am still without a clue as to the best way to connect a 486 PC at my home to the Ethernet here at work.  I know that I want to run PPP, and I know that I want to run it as fast as I can.  The phone line decision is made: a PacBell 'ADN' DS-0 circuit, running at 56Kbps.  Similarly, I've identified a few likely CSU/DSU vendors that'll handle 56Kbps sync from/to a data source/sink.  From my perusing the literature, FTP Software will soon begin se



l

Care to give us the details on the DS-0 circuit, Installation cost,
ongoing cost. How about the CSU/DSU vendors? Names, prices, etc.

>ling a PPP package that also supports Novell protocols, which is also a requirement of ours.  (I assume it does some sort of IP tunneling.)

I believe that the just released 2.1 generic kernel includes a ppp
packet driver and the associated stack.

>	Here are my questions, which no one I've found seems able to answer.  What sort of serial hardware will I need on the home 486, if I want to talk to the CSU/DSU (and thus the phone line) at 56K, synchronously?  Will the normal sort of PC comm port do the trick?  (Is there such a thing?)  (I'm a Sun/Unix guy starting the painful transition to PC's and Windows.  Forgive my naivete, please.)  I would ask these questions of the people at FTP, for instance, if only we were permitted to speak with someone who 



h
>as, shall we say, some technical background.

Try jamie@ftp.com, he has helped me with some sticky slip porblems in
the past.

The FTP packet driver is called ppp16550, which leads me to believe
that they are expecting to drive a standard RS232 interface. The 16550
likely refers to the NS 16550 AFN Uart which has internal fifos which
cut down interrupt frequency. You only really need this is you are
running a multitasking environment such as Windoze or DesqView[/X]..
Look for a serial card with a 16550AFN on it or a socketed one so you
can order the chip and then install it yourself. Note, FTP inc. have
told me that some portion of el-cheapo async pc cards don't have the
necessary signal lines to toggle the 16550afn fifo's. There are some
utils on simtel and it's mirrors to test the 16550afn and to toggle it
on and off. It is much cheaper to retrofit an async card with a
16550afn than to but one specially equipped..

PK
--
Phil Kemp, Systems Engineer         Voice:(403)-233-2815
CONVEX Computer Canada Ltd.           Fax:(403)-261-2029
Calgary, Alta.                  Internet:kemp@convex.com