Date Code 20010518 Appendix B B-23
SEL-2020 Instruction Manual
(hang up for a half second, then release the switch hook for a half second) before continuing to
dial. The hook flash is needed with some phone systems to transfer to an extension.
Dial strings are entered using a \I string in a MESG setting from the SET A command for a port,
which has a modem attached. Example 6 in Section 4: Job Done Examples illustrates the dial
string setting for Port 8.
Startup Strings
Example 1 in Section 4: Job Done Examples show the MSTR setting establishing modem
operating parameters on startup with the startup string: ATX0E0&D0%E1S0=4.
In the above string:
AT: Attention code.
X0: Basic response setting, blind dialing.
E0: Characters not echoed to the terminal.
&D0: Ignore the DTR signal.
%E1: Enable line quality monitor/auto retrain, disable fallback/fall forward.
S0=4: Set the S0 register to 4 (answer on the fourth ring).
If your modem is not operating properly, you can reinitialize it with the factory settings by
setting MSTR=AT&FX0E0&D0S0=4&W using the SET P command. The modem is
reinitialized when you save the setting changes. After this is done, you can remove the &F and
&W from the MSTR setting using the SET P command again.
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