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Model MT5600ZDXV
2.7.3 The Modem Dials But Cannot Make a
Connection
There can be several reasons the MultiModemZDXV fails to make a connection.
Possibilities include
•
modem is not configured properly.
•
lack of a physical connection to the telephone line.
•
a wrong dial tone.
•
a busy signal.
•
a wrong number.
•
no modem at the other end.
•
a faulty modem, computer, or software at the other end.
•
incompatibility between modems.
You can narrow the list of possibilities by using extended result codes. To
enable them, enter ATV1X4 and press ENTER while in terminal mode, or
include V1X4 in the modem’s initialization string. When you dial again, the
modem will report the call’s progress.
4
Both local and remote modems may be misconfigured, thus encumbering
the negotiation process between modems. The solution may be to modify
modem parameters via AT command strings. There are other configura-
tions you can modify as well. Note that you can return to the modem's
default configuration by entering
AT&F. If your application requires
modification, use the command strings (Table 2-1 below) corresponding
to your application:
