Chapter 3 – Remote Configuration
Multi-Tech Systems, Inc. MT9234ZPX User Guide
43
Chapter 3 – Remote Configuration
Remote configuration is a network management tool that allows you to configure the MultiModem anywhere in your
network from one location. With password-protected remote configuration, you can issue
AT
commands to a
remote modem for maintenance or troubleshooting as if you were on site.
Basic
Procedure
The following steps are valid regardless of whether the connection is established by the local or the remote Multi-
Tech modem.
Note:
For this procedure, the remote computer must be running, and a communication program must be ready for
a data connection.
1.
Establish a data connection with a remote MultiModem.
2.
Send three remote configuration escape characters followed by
AT
and the setup password, and press
E
NTER
. Example:
%%%ATMTSMODEM
(all capital letters). You have four tries to enter the correct
password before being disconnected. If the password is correct, the remote modem responds with
OK.
3.
Type
AT
commands to configure the remote modem.
4.
When you have finished configuring the remote modem, save the new configuration by typing
AT&W0
and
pressing
E
NTER
.
5.
Type
ATO
and press E
NTER
to exit remote configuration. You can now break the connection in the normal
way.
Setup
Multi-Tech modems are shipped with a default setup password (MTSMODEM). Because anyone who has the
User Guide
knows the default setup password, you should change the password and possibly also the remote
configuration escape character. Record your changes for future use.
To
Change
the
Setup
Password
1.
Open a data communications program such as HyperTerminal.
2.
To change the password, type
AT#S=
xxxxxxxx
, where
xxxxxxxx
stands for the password, and then press
E
NTER
. The password can include any keyboard character, and can be up to eight characters long. The
modem responds with
OK
.
CAUTION:
Passwords are case-sensitive. The next time you enter the password, it must be in the same
case as you set it up.
3.
The new password is saved automatically. You can now either enter more AT commands or exit the data
communications program. The next time you wish to set up the modem, you must use the new password.
To
Change
the
Remote
Escape
Character
To further improve security, you can change a remote modem’s remote configuration escape character either
locally or remotely. The remote configuration escape character is stored in register
S9
. The factory default is 37,
which is the ASCII code for the percent character (%). Setting
S9
to 0 (zero) disables remote configuration entirely.
CAUTION:
If you set S9 to 0 (zero) remotely, you won’t be able to change it back remotely.
1.
Establish a remote configuration link with the remote modem as described in “Basic Procedure.”
2.
Type
ATS9=
n
, where
n
is the ASCII code for the new remote configuration escape character, and then
press E
NTER
.
3.
Save the new value by typing
AT&W
and pressing E
NTER
. Record for future use.
4.
Type
ATO
and press E
NTER
to exit remote configuration.
