Multi-Tech Systems MT2834ZDX manual Atcr Remote Configuration Escape Sequence, +++ATCR Escape Code

		Chapter 3 – AT Commands, S-Registers, and Results Codes
Command:	%%%AT<CR>	Remote Configuration Escape Sequence
Values:	n/a
Description:	Initiates remote configuration mode while online with remote modem. The remote configuration
	escape character (%) is defined in register S13.
Command:	+++AT<CR>	Escape Code
Values:	n/a
Description:	Puts modem in command mode (and optionally issues a command) while remaining on line.
	Enter +++AT, up to ten command characters (or as defined by S34), and a RETURN. Used mostly
	to issue hang-up command: +++ATH<CR>.
Command:	<BREAK>AT<CR> Escape Sequence
Values:	n/a
Description:	Alternate escape method. Puts modem in command mode while remaining on line. Send a
	<BREAK> signal followed by AT, up to sixty command characters, and a RETURN. You must set
	the modem to %E2 or %E3 before you can use this escape method.

Multi-Tech Systems, Inc. MT2834ZDX User's Guide 17