20
LINESHARE MASTER
The calling modem then accesses
the phone line through the
Lineshare Master and dials the
number of the receiving modem.
The Lineshare Master detects the * 9
and sets the tone emulation register
to transmit the 2225hz tone. Three
seconds after the last digit (9) is
dialed, the Lineshare Master begins
transmitting a series of 2225hz tones.
When the Line Sharing Device
answers the call, it detects the
Reverse Modem Tone from the
Lineshare Master and routes the call
to the receiving modem. When the
receiving modem answers the call,
the Lineshare Master detects its
carrier signal and releases the line to
the calling modem. The two systems
then establish their communications
link.
