TELNET character mapping problem

[Mark Benard]

I have a LAN with a mixture of vendor products: Sun, Pyramid, and a VAX
running VMS and using EXCELAN's EXOS product.  I am having trouble with
the mapping of two control characters (^C and ^M) from the users
connected across the network from the VAX via Excelan's TELNET.

For the VAX to Pyramid connection, ^M is appearing as ^J.

For the VAX to Sun connection, when running Gnu Emacs, ^C is appearing
as a ^@.  Outside of Emacs, it still generates SIGINT.  ^M is mapped ok.

In both cases I am setting my terminal to be VT100 across the board.

Any ideas on how I can alter the mapping?  And why is it happening?
Is it just slightly different (i.e., incompatible) implementations
of TELNET?
-- 
Mark Benard
Department of Computer Science     INTERNET:   mb at TULANE.EDU
Tulane University                  USENET:     pyramid!tulane!mb
New Orleans, LA 70118              BITNET:     mb%TULANE.EDU at RELAY.CS.NET
				    (or pyramid!tulane!mb at DECWRL.DEC.COM)