GD-1370
© 2016-2020 Toshiba Tec Corporation All rights reserved
DIALING/COMMUNICATION CONTROL
3 - 14
- Network interaction (Phase 1)
The V.8 procedure is performed as the startup procedure for the V.34 high-speed modem.
In the V.8 procedure, mainly the optimum modulation method (V series modem mode) that can
be operated between the transmitter and receiver is determined.
Transmitter
Signal name
Abbreviation
Function
Remarks
Calling tone
CNG
1100 Hz tone signal specified
by T.30 indicating the sender
is a fax machine in the
automatic calling mode
-
Call Menu signal
CM
Mainly indicates an available
modulation method such as
V.21, V.27ter, V.29, V.17,
V.34, etc.
Modulated by V.21 (L)
*1
.
Transmission rate: 300 bps
CM terminator
CJ
Indicates the detection of the
JM signal and the termination
of the CM signal.
Modulated by V.21 (L)
*1
.
Transmission rate: 300 bps
Call Indicator signal
CI
Indicates the general
communication functions. It is
sent when the V.8 procedure
is restarted.
For the late start only
(P. 3-20)
Modulated by V.21 (L)
*1
.
Transmission rate: 300 bps
Receiver
Signal name
Abbreviation
Function
Remarks
Answer amplitude tone
ANSam
2100 Hz tone signal
amplitude-modulated to 15 Hz
Tone almost equivalent to
CED of a conventional
machine.
Joint Menu signal
JM
Indicates the terminal type
such as a facsimile machine
and informs the available
modulation method
corresponding to a usable
one sent from CM of a
transmitter.
Modulated by V.21 (H)
*1
.
Transmission rate: 300 bps
*1 :
- V.21 (L)
Low frequency channel defined by the V.21 recommendation 1,080±100 Hz
(980 Hz: 1, 1,180 Hz: 0)
- V.21 (H)
High frequency channel defined by the V.21 recommendation 1,750±100 Hz
(1,650 Hz: 1, 1,850 Hz: 0)
Содержание GD-1370
Страница 12: ...GD 1370 2016 2020 Toshiba Tec Corporation All rights reserved SPECIFICATIONS AND OUTLINE OF SYSTEM 1 6 ...
Страница 46: ...GD 1370 2016 2020 Toshiba Tec Corporation All rights reserved INSTALLATION 4 2 ...
Страница 50: ...GD 1370 2016 2020 Toshiba Tec Corporation All rights reserved SELF DIAGNOSIS MODE 6 2 ...
Страница 64: ...GD 1370 2016 2020 Toshiba Tec Corporation All rights reserved TROUBLESHOOTING 7 14 ...
Страница 66: ...GD 1370 2016 2020 Toshiba Tec Corporation All rights reserved PRECAUTIONS FOR INSTALLATION OF FAX BOARD 8 2 ...
Страница 68: ...GD 1370 2016 2020 Toshiba Tec Corporation All rights reserved FIRMWARE UPDATING 9 2 ...
Страница 70: ...GD 1370 2016 2020 Toshiba Tec Corporation All rights reserved 2 ...
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Страница 72: ...1 11 1 OSAKI SHINAGAWA KU TOKYO 141 8562 JAPAN ...