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3.1.3 Description of connection operation on F-NET
(1) When the caller dials the special number "161" on the telephone, the
secondary dial tone (SDT) is returned from the LS. The caller then
dials the called party number.
(2) LS detects the caller number, and transmits this to the TS-FX on the
calling side together with the called party number.
(3) The calling TS-FX verifies and check whether or not the calling fac-
simile has an arrangement to use F-NET.
(4) The calling TS-FX sets the line up to the calling STOC, and instructs
facsimile transmission operation to the calling facsimile by the facsim-
ile switching instruction signal (2100 Hz).
(5) The calling facsimile and the calling FCAP-LCE are connected, and
the image signals are transmitted from the calling facsimile after the
selection of the communications mode and other communications con-
trol.
(6) The calling FCAP-LCE multiplexes the received image signals, and
transmits them by high-speed digital transmission to the calling
STOC.
(7) The calling STOC stores the image signals to memory. If the docu-
ment size must be converted, it stores the image signals to memory
after performing conversion.
(8) The calling STOC looks for free space on the digital transmission line,
and transmits the calling party number, called party number, and
image signals to the called STOC.
(9) The called STOC stores the image signals from the calling STOC to
memory.
(10)The called TS-FX is started up by the called STOC. When it receives
the called party number via the control signal network, the line up to
the LS is set.
(11)If the called party is not busy, the facsimile alert signal (1300 Hz) for
starting up the called facsimile with the telephone bell in a non-ringing
state is sent from the called TS-FX. Response signals (primary
response: DC loop, secondary response: 2100 Hz) are returned from
the called facsimile.
(12)The called FCAP-LCE is connected to the called facsimile, and the
image signals are transmitted from the called FCAP-LCE after com-
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