Owner's manual

AT Commands for CX930xx Modem Reference Manual
4-16 Conexant 102752B
+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 FCLASS0.
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