Multi-Tech Systems ISI5634PCI/4/8 I ~, Controlling DTMF Functionality with the command +FCLASS=

	Chapter 4—AT Commands, S-Registers, Result Codes
	to ten command character. Then press ENTER. Used
	mostly to issue hangup command: +++ATH<cr>.
Command: %%%AT<cr>Remote ConfigurationEscape Sequence
Values:	n/a
Description:	Initiates remote configuration mode while online with
	remote modem. The remote configuration escape
	character (%) is defined in register S13.

Controlling DTMF Functionality with the command +FCLASS=

The +FCLASS= command controls DTMF functionality and is used as follows.

1.Enter the command AT+FCLASS=8 <cr> to the modem.

2.Call into modem with phone. A >r (“arrow r”), incoming ring indication) is displayed, followed by OK . The modem is now in Online Voice Command mode, allowing DTMF characters to be passed through from the remote phone. The characters is displayed as shown below:

AT+FCLASS=8

OKR is Ring

/ I ~

The Data link escape character (>), and the ‘start of DTMF tone shielding’ character (/) are both output once a button is pressed. The DTMF digit will continue to be output along with a > until the button is released, then another > is output along with a ‘DTMF transitions to off’ (~) character. Silence on the line is indicated with a (>s) displayed.

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