User`s guide

Protocols
6-10 Modem 3600
A break is sent to the serial port while the modem is in connect state
during a direct connection (no protocol, data not buffered).
A break is received from the remote modem while the modem is in
connect state during a normal connection (no protocol, data buffered).
A transmit break command is issued while the modem is in command
state during a reliable (protocol) or normal connection (no protocol,
data buffered).
Inactivity Timer \T
The \T command specifies the number of minutes the modem will stay
online without transmitting or receiving data before hanging up. When
the value is set to 0, the timer is disabled.
Command Operation
\K, \K2, \K4 Immediately send break to the remote modem and
enter command mode when break is through
\K1, \K3, \K5 Immediately send break to the remote modem
Command Operation
\K, \K1 Empty the data buffers and send break to the serial
port
\K2, \K3 Immediately send break to the serial port
\K4, \K5 Send break to the serial port in sequence with any
data received from the remote modem
Command Operation
\K, \K1 Empty data buffers and send break to the remote
modem
\K2, \K3 Immediately send break to the remote modem
\K4, \K5 Send break to the remote modem in sequence with
any data received from the serial port
Command Operation
\T Disable inactivity timer
\Tn Set inactivity to n (n=1-255) minutes