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