Conexant – Comtrol AT Commands for SmartACFL User Manual

Page 118

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Command Reference Manual

4-12

Conexant

100722A

4.2.3.4 +FIT - DTE Inactivity Timeout
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.

Syntax

+FIT=<time>,<action>

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
4-3.

<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 4-3. 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 +FTH command

DTE sends data

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

command

DTE sends

<XON>

Waiting to deliver received data

DTE sets V.24 Ckt 133 OFF after
+FRM or +FRH command

DTE sets V.24 Ckt 133 ON

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