[comp.dcom.modems] kermit: DEC PDP11/23 <--> IBM AT

barkdoll@cattell.psych.upenn.edu (Ed Barkdoll) (06/26/89)

	I am trying to send files from a DEC PDP11/23 (actually LSI11/23) to an
IBM AT clone via kermit.  The version of kermit running on the 11 is Kermit-11 
v2.30 by Brian Nelson and on the AT is that included in ProComm version 2.4.
RT11(FB) v4.0 is the operating system on the 11 with multitasking built and DOS
3.3 is on the AT.  A DLV11J is the serial I/O board on the 11.

	My problem is this: with kermit running in CONNECT mode on the 11/23
and Procomm in HOST mode I am able to communicate with the AT - i.e. the 11/23 
acts as a remote terminal for the AT and I am able to list direcories and such.
I am NOT able to transfer files, however.  The kermits are clearly talking to 
one another as acknowledgement packets are sent and received but for some 
reason they are not talking the same language as I get an Unsuccessful transfer
error.  The problem would not appear to be baud rate or any other obvious 
option as the 11 can run successfully as a remote.  I have tried virtually all
the parity (and other options) combinations that I can to no avail.
	Nor will kermit work with the 11/23 in SERVER mode and the AT as a 
remote.

	Does someone have a reasonable idea what might be the problem?  How 
likely is it that the two kermits are incompatible?  (please no
wild guesses) Has anyone tried a similar transfer with kermit or some other
reasonable user friendly communiactions link b/w a PDP11 and an AT?
Please e-mail any suggestions.
		Thanks,
		Edwin Barkdoll [barkdoll@cattell.psych.upenn.edu]

g7ahn@cc.imperial.ac.UK ("K. Krallis") (06/29/89)

   Regarding Edwins message in INFO-MODEMS #184,  I would like to inform
you that I have the same problem with PROCOMM Kermit when using
lines with Even Parity. It's OK with 8 bit, No Parity but doesn't
like 7bit Even Parity at all.  Try using a different line setting
(it's easy on the AT side but I don't know what happens on the PDP11
serial port driver).  If instead of PROCOMM use the KERMIT 2.30 program
interactively and the PDP11 Kermit in SERVER or interactive mode,
you may still get good results.

   Costas Krallis G7AHN
   Imperial College
   London, England

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