CompuServe Thread

Forum unknown · Telecommunications

#Modem

3 messages in this thread
#118106From: Richard S. Rose,M.D.Apr 9, 1988 12:23 AM
To All, Sure would appreciate a reply if anyone can help with this one. I have an Anchor Automation Volksmodem 12. I'm using Online! (2.01 i think) . It seems that the modem does not work properly unless I send commands with communication parameters set at 7E1. That is, if I dial a remote system with my system initally set at 8N1 I get nothing but garbled data even though the remote system is operating at 8N1. I have to set to 7E1, dial , connect, then go to 8N1. Under some circumstances it gets much more complicated – the modem connects up but transmission under XModem is bizarre and results in error messages for the first two or three XModem blocks and then from block 40 on (resulting in a failed transmission). Is this modem capable of talking to my terminal only at 7E1? I thought that the modem itself should not enter into the decision of transmission parametersonly the communication soft-ware at each end.
#118437From: Gregory KozikowskiApr 10, 1988 9:09 PM
Rich, I got into hot water with that one with C'Serve. If you sign on to C'Serve with the reccommended 8N1, the first few messages will be graphics charactors until Ohio realizes what you're doing. I'm using IBM (for real) and Hayes. It happens to me too. C'Serve's own software, Professional Connection, ALWAYS signs on at 7E1 and switches to 8N1 only during binary downloads. Automatically. C'Serve said they have to initially operate at 7E1 to allow all the "dum" terminals out there to operate. Of course, there MIGHT be something wrong with your modem, but you're essentially correct-the software determines the protocol, not the modem. Captain Video
#118437From: Gregory KozikowskiApr 10, 1988 9:09 PM
Rich, I got into hot water with that one with C'Serve. If you sign on to C'Serve with the reccommended 8N1, the first few messages will be graphics charactors until Ohio realizes what you're doing. I'm using IBM (for real) and Hayes. It happens to me too. C'Serve's own software, Professional Connection, ALWAYS signs on at 7E1 and switches to 8N1 only during binary downloads. Automatically. C'Serve said they have to initially operate at 7E1 to allow all the "dum" terminals out there to operate. Of course, there MIGHT be something wrong with your modem, but you're essentially correct-the software determines the protocol, not the modem. Captain Video