W8SDZ@SIMTEL20.ARPA (Keith Petersen) (08/12/86)
A fix for the PC Pursuit XMODEM file upload problem has been found.
--cut here--PCP-FIX.MSG--cut here--
TO: All PC Pursuit Users
SUBJECT: PC Pursuit file upload problem solved!
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My previous warning message (PCP-WARN.MSG) reported the inability
of GTE Telenet's PC Pursuit service to upload certain files using
Christensen ("XMODEM") protocol. In particular, files containing
the three-byte ASCII sequence <CR, '@', CR> (binary <0DH, 40H,
0DH>) cannot normally be uploaded, since this sequence (and any
variation with high bits set in any of the three bytes) causes an
escape to Telenet command level.
In response to my initial inquiry about this problem, Telenet
customer service and engineering representatives informed me that
no solution was likely. I am now pleased to report that this
information was incorrect! It is possible to upload files
containing the three-byte Telenet escape sequence by following
the procedure described below.
After connecting to the remote modem (C DIALxxx/xx command),
escape to Telenet command level by typing (cr) @ (cr). Then
issue the following two commands at the Telenet @ prompts (where
(cr) indicates RETURN or ENTER as appropriate to your keyboard):
@SET? 1:0 (cr)
PAR1:0
@CONT (cr)
The SET? (Set Parameter) command disables subsequent recognition
of the normal Telenet escape sequence. (The PAR1:0 message is a
response from Telenet.) The CONT (Continue) command then returns
control to the remote modem. Note that the above commands may be
entered at any time after connecting to the remote dialing area
via the Telenet C (Connect) command (i.e., before or after
issuing a Hayes modem ATDT dialing command to connect to a remote
system). However, these commands should be used with caution...
Once they have been entered, there is no way to escape back to
Telenet command level in order to issue a D (Disconnect) command!
I.e., connection to another dialing area can only be made by
hanging up (dropping carrier) and then re-dialing into your local
Telenet access node.
My thanks to Telenet Director of Marketing, Kevin Abt (the
"Father of PC Pursuit") for researching this problem and
providing the above information. Kevin also reports that GTE is
actively responding to the enormous popularity of PC Pursuit by
expanding capacity and enhancing the system. They have just
completed a several-week effort to increase the number of
outgoing modems in each of the 14 metropolitan areas currently
served by PC Pursuit. (I have personally noticed a marked
improvement in the time required to obtain network connections.)
They are now in the process of testing 2400 bps service and new
modems which provide enhanced call progress reporting, for
deployment in all PC Pursuit cities. They are also soliciting
requests for additional cities for future service. To keep
abreast of the latest developments and/or to provide feedback to
Kevin, call the NET-EXCHANGE, a FIDO BBS in the Washington, DC
(DIAL202) area at (703)-689-3561.
Bob Freed
Newton Centre, MA
August 11, 1986
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