From: f_cnnghamjk@ccsvax.sfasu.edu
Newsgroups: comp.dcom.modems
Subject: zmodem blues...
Date: 10 Oct 92 16:21:33 CST
Organization: Stephen F. Austin State University

 
Greetings/Salutations all,
 
My setup: I have a Mac with a SupraFax (14400) modem at home and a 
NeXT at work.  I plan use Dave Alverson's Zterm on the Mac (if I can get all 
to work) and zmodem (from archives at sonata) on the NeXT. 
 
I have two ways to connect to the NeXT.
 
Option (1) 9600 baud modems, very unstable, settings seem to change randomly.
One day things work great, the next...who knows?  The modems are sometimes
"detuned" to the point that they are only capable of  ~180 cps. Annoying in 
the extreme, but at least I can transfer files _both_ ways.
 
Option (2) 14400 baud modem, connect to a DECstation running Ultrix then
use telnet to connect to the NeXT.  Very stable, NeXT->(Dec)->Mac transfers at
1200+ cps are usual, and have gone to 2500+ cps. 
 
I would clearly prefer (2), but I can't seem  to make Mac->NeXT transfers work.
(I find this odd since Mac->NeXT works (sometimes well) using Option (1).)
 
Using Option (2), Zterm will try to initiate the transfer by sending the rz 
command to the NeXT.
  
The NeXT responds:
     rz ready. To begin transfer, type "sz file ..." to your modem program
 
The (Zterm) dialog box pops up telling me that a transfer is about to take 
place.  Nothing happens.  Eventually, a timeout occurs.
 
The contents of /tmp/rzlog (rz -bvvvv) follow.  The first transfer is Option
(1) on a good day.  The second is an attempted transfer using Option (2).
 
The transfer logs do little for me; I am a computing neophyte.
 
argv[0]=rz Progname=rz
rz 3.01 5-25-89 for V7/BSD
 
mode:1
rz ready. To begin transfer, type "sz file ..." to your modem program
zshhdr: f 4 ZRINIT 4
zgethdr: B 4 ZRQINIT 0
zshhdr: f 4 ZRINIT 4
zgethdr: C 4 ZFILE 4
zrdat32: 40 ZCRCW
mode:3
Incoming: ZmodemTest 2182 5264676151 0
Receiving ZmodemTest BIN w
zshhdr: f 4 ZRPOS 4
zgethdr: C 4 ZDATA a
 
      0 ZMODEM CRC-32    zrdat32: 512 ZCRCQ
zshhdr: f 4 ZACK 4
 
    512 ZMODEM CRC-32    zrdat32: 512 ZCRCQ
zshhdr: f 4 ZACK 4
 
   1024 ZMODEM CRC-32    zrdat32: 512 ZCRCQ
zshhdr: f 4 ZACK 4
 
   1536 ZMODEM CRC-32    zrdat32: 512 ZCRCQ
zshhdr: f 4 ZACK 4
 
   2048 ZMODEM CRC-32    zrdat32: 134 ZCRCE
zgethdr: C 4 ZEOF b
rzfile: normal EOF
zshhdr: f 4 ZRINIT 4
zgethdr: B 4 ZFIN 8
ackbibi:
zshhdr: f 4 ZFIN 4
ackbibi complete
mode:0
 
argv[0]=rz Progname=rz
rz 3.01 5-25-89 for V7/BSD
 
mode:1
rz ready. To begin transfer, type "sz file ..." to your modem program
zshhdr: f 4 ZRINIT 4
zgethdr: B 4 ZRQINIT 0
zshhdr: f 4 ZRINIT 4
Retry 0: Bad CRC
Retry 0: Got ERROR
zgethdr: C 4 ERROR ffffffff
zshhdr: f 4 ZRINIT 4
Retry 0: Bad CRC
Retry 0: Got ERROR
zgethdr: C 4 ERROR ffffffff
zshhdr: f 4 ZRINIT 4
Retry 0: Bad CRC
Retry 0: Got ERROR
zgethdr: C 4 ERROR ffffffff
zshhdr: f 4 ZRINIT 4
Retry 0: Bad CRC
Retry 0: Got ERROR
zgethdr: C 4 ERROR ffffffff
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
Readline:TIMEOUT
mode:0
 
Thanks for your time and consideration.  Any and all help is appreciated.
 
Randomly, Kelly Cunningham
<deviate@lipschitz.sfasu.edu><f_cnnghamjk@ccsvax.sfasu.edu><jkellyc@tenet.edu>
    NeXTMail (encouraged)          VMS Mail (tolerated)     Pine (beats mail)
"There is no reason for any individual to have a computer in their home."
                  (Ken Olson, President and visionary, Digital Equipment,1977)