Chapter 2 - Installation
27
may be installed behind a company phone system (PBX) with an
internal dial tone that sounds different from the normal dial tone.
In that case, the modem may not recognize the dial tone and may
treat it as an error. Check your PBX manual to see if you can
change the internal dial tone; if you can’t, change your modem’s
initialization string to replace X4 with X3, which will cause the
modem to ignore dial tones.
• If the modem reports
BUSY
, the other number may be busy, in
which case you should try again later, or it may indicate that you
have failed to add a 9, prefix to the phone number if you must dial
9 for an outside line.
If you must dial 9 to get an outside line, the easiest way to dial it
automatically is to include it in the modem’s dial prefix, e.g.,
ATDT9,. Note the comma, which inserts a pause before the
number is dialed. By inserting 9, into the dial prefix, you do not
have to include it in each directory entry.
To change the dial prefix in your communications package, select
Setup
,
Modem
; then select the modem type you are using, and
type the new prefix in the Dial Prefix box. To change the dial
prefix in Windows Terminal, select
Settings
, Modem Commands.
To change it in Windows 95 HyperTerminal, select
Call
, Connect
from the menu bar, click
Dialing Properties
, and type 9 in the local
and long distance boxes in
How I Dial from This Location
.
• If the modem reports
NO ANSWER
, the other system has failed to
go off-hook, or you might have dialed a wrong number. Check the
number.
• If the modem reports
NO CARRIER
, the phone was answered at
the other end, but no connection was made. You might have
dialed a wrong number, and a person answered instead of a
computer, or you might have dialed the correct number but the
other computer or software was turned off or faulty. Check the
number and try again, or try calling another system to make sure
your modem is working. Also, try calling the number on your
telephone. If you hear harsh sounds, then another modem is
answering the call, and the modems may be having problems
negotiating because of modem incompatibilities or line noise. Try
connecting at a lower speed.
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