Multi-Tech Systems MT5634SMI V.92, MT5634SMI V.34 manual +Fdd, +Fit, DTE Inactivity Timeout

				Chapter 2 – Fax Class 1 and 1.0 Commands
Command:		+FDD	Double Escape Character Replacement
Description:			This parameter conditions the use of the ˜DLE˜˜˜SUB˜ pair to encode
			consecutive <1/0 <1/0 in data. This may be used to prevent unbound
			expansion of data that contains many <1/0 patterns.
Defined Values:			<value> Decimal number corresponding to the selected option. For modem
			decode of <DLE><SUB>, the defined range are:
			0 <DLE> <DLE> or discard (default and only)
			1 <DLE> <DLE> (not supported)
			For modem encoding of <1/0> <1/0>the defined values are:
			0 <DLE> <DLE> <DLE> <DLE> (default and only)
			1 <DLE> <SUB> (not supported)
Reporting Current or Selected Values:
			Command: +FDD?
			Response: +FDD: <value>
			Example: +FDD: 0 For the default setting.
Reporting Supported Range of Parameter Values:
			Command: +FDD=?
			Response: +FDD: (<value> range)
			Example: +FDD: (0)
Command:		+FIT	DTE Inactivity Timeout
Description:			This command specifies a DTE inactivity timeout value that allows the modem
			to break away from an unsuccessful connection attempt at any stage of a
			facsimile transfer. The DTE inactivity timer operates only while the modem is
			off-hook.
Defined Values:			<time The <time parameter indicates the DTE inactivity timeout in seconds.
			The value of 0 indicates that timeout is disabled (default). The required
			timeout range is 1 to 255 seconds. The inactivity timer starts when the modem
			has taken some action that requires DTE response. If the DTE does respond,
			the modem resets the inactivity timer. Inactivity timer related events are listed
			in Table 3-3.
			<action The <action parameter has two meanings.
			0 Upon timeout, the modem will go on-hook, executing an implied ATH
			command; then reset to +FCLASS 0.
			1 Upon timeout, the DCE will only go on-hook.
Reporting Current or Selected Values:
			Command: +FIT?
			Response: +FIT: <time ,action
			Example: +FIT: 0,0 For the default settings.
Reporting Supported Range of Parameter Values:
			Command: +FIT?
			Response: +FIT: (<time> range), (<action> range)
			Example: +FIT: (0-255),(0-1)
Table 3-3. Inactivity Timer Start and Stop Events
	On-line state			Start timer event	Stop timer event
	Waiting for a command			modem sends final result code	DTE sends AT or “at”
	Waiting for transmit data			modem sends CONNECT after +FTM or	DTE sends data
				+FTH command
	Waiting for transmit data			modem sends <XON or sets CTS ON	DTE sends data
	Waiting to deliver received data			modem sends <XOFF after +FRM or +FRH	DTE sends <XON
				command
	Waiting to deliver received data			DTE sets V.24 Ckt 133 OFF after +FRM or	DTE sets V.24 Ckt 133
				+FRH command	ON

Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 42