Multitech MULTIMODEM MT5634ZBA-USB - Changing the Remote Escape Character

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Chapter 5 - Remote Configuration
Changing the Remote Escape Character
To increase security, you can change a remote modem’s remote configuration escape
character. 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—but if you do this 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, then press ENTER.
3. Save the new value by typing AT&W and pressing ENTER.
4. Type ATO<CR> to exit remote configuration.