Multi-Tech Systems MT5600SMI-34 manual Double Escape Character Replacement, DTE Inactivity Timeout

		Chapter 6 – Fax Class 1 and Class 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 6-3.
		<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 6-3. 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 MT5600SMI Developer’s Guide 95