CRISMO@HLERUL2.BITNET (Maarten Ouwehand +31 71 276948/27692) (01/10/89)
Thanks for all the replies ! I know now for sure that speed is not the problem. But why , o why , don't I get the OK-response when I type an AT-command. Let me explain a little : A few weeks ago I bought this BEST-2400-PLUS modem to replace my BEST-1200-PLUS modem wich I used the last year with full satisfaction. All I did was disconnect the power- and the RS232-cable from the 1200-modem and connect them to the 2400-modem..simple as that ! I used the Power-supply unit which came with the 2400-modem. I switched the power on and saw that the lights which had to lit up, according the manual,were really on; the next thing I had to do was typing an AT-command and check if the characters appeared on the monitor, they did , so the ECHO was allright . But then....when I hit the ENTER-key, the cursor jumped back to the first position of the same line and no OK-response ...!!! According the manual, I had to check the transmission speed of my computer, so I tried all possible (and impossible) speeds with KERMIT and ZLINK, .. (Yes Dave , I have paid; perhaps the only one from abroad ;-)) .. without any success. I went back to the dealer; he connected the modem to an MSDOS-computer and .....?? RIGHT. No problem ! With the first AT-command he received a nice OK-response :-( !!?? Anyone have any ideas why an Apple,which works fine with a 1200-modem, shouldn't work with a 2400-modem ??? I'll appreciate any help . Maarten P.s. The modem supports the following protocols : CCITT V21/22/23/22bis and two BELL protocols (300 and 1200 ?)
JDA@NIHCU.BITNET (Doug Ashbrook) (01/11/89)
As I recall, you have to tell the modem port on the //c that you are using 2400 baud. Take a look in the manual that came with your //c (my daughter's is at home, so I can't check it right now). ------------------------------------------------------------------- J. Douglas Ashbrook (301) 496-5181 BITNET: JDA@NIHCU ARPA: jda%nihcu.bitnet@cunyvm.cuny.edu National Institutes of Health, Computer Center, Bethesda, MD 20892