dirty@engin.umich.edu (Cameron Javad Esfahani) (06/20/91)
I hope someone can help me with ZTerm. I am using a TelePort 2400 baud modem with MNP4 error correction. In the documentation to TelePort it says that I can increase my thoroughput by using a protocol that has no built in error correction and let MNP4 take care of it. I have been trying to use ZTerm but every time I try to download a file I get CRC Header errors and the program retries about 20 times then gives up! I don't want to have to use kermit the rest of my life. What do I need to type on the unix side. Does it matter which version of zmodem I use? It compiles okay and as far as I can tell, I am setting the correct switches... Cameron Esfahani (dirty@caen.engin.umich.edu)
johnston@minnie.me.udel.edu (06/20/91)
In article <1991Jun19.234823.9232@terminator.cc.umich.edu>, dirty@engin.umich.edu (Cameron Javad Esfahani) writes... >I hope someone can help me with ZTerm. I am using a TelePort 2400 baud >modem with MNP4 error correction. In the documentation to TelePort it >says that I can increase my thoroughput by using a protocol that has no >built in error correction and let MNP4 take care of it. I have >been trying to use ZTerm but every time I try to download a file I get >CRC Header errors and the program retries about 20 times then gives up! >I don't want to have to use kermit the rest of my life. What do I I have a similar question. I just got a Teleport ADB modem which supports MNP 4 and 5. I notice an improvement when reading text or news, but when I'm downloading I see little differnce in throughput. Without MNP, zmodem gives 95-100% efficiency consistently. When I log in with MNP and hardware handshaking, retries and errors soak up most of the through-put; I get the same 220-240 cps for downloads. I used to use kermit, so zmodem seems like a godsend. However, MNP doesn't seem to be much of a bonus. Am I missing something? -- Bill (johnston@minnie.me.udel.edu)