Multi-Tech Systems MT5634ZBAV - Manual (Page 79)

4 AT Commands, S-Registers, and Result Codes
69
Command: +++AT<CR> Escape Sequence
Values: n/a
Description: Puts the modem in command mode (and option-
ally issues a command) while remaining online.
Type +++AT and up to ten command characters,
then press ENTER. Used mostly to issue the
hang-up command: +++ATH<CR>.
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.