Communication Switches - Gestetner B130 Service Manual

BIT SWITCHES

5.1.4 COMMUNICATION SWITCHES

Communication Switch 00
No. FUNCTION
0, 1 Compression modes
available in receive mode
Bit 1 0
0 0
0 1
1 0
1 1
2, 3 Compression modes
available in transmit mode
Bit 3 2
0 0
0 1
1 0
1 1
4–7 Not used
Communication Switch 01
No. FUNCTION
0 ECM
0: Off 1: On
1 Not used
2, 3 Wrong connection prevention
method
Bit 3 Bit 2
0 0
0 1
1 0
1 1
4 Operator call if no response is
received in reply to NSF/DIS
0: Disabled 1: Enabled
5 Not used
6, 7 Maximum printable page
length available
Bit 7 6 Setting
0 0 No limit
0 1 B4 (364 mm)
1 0 A4 (297 mm)
1 1 Not used
B465
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These bits determine the compression capabilities
to be declared in phase B (handshaking) of the T.30
Modes protocol.
MH only
MH/MR
MH/MR/MMR
Not used
These bits determine the compression capabilities
to be used in the transmission and to be declared in
Modes
phase B (handshaking) of the T.30 protocol.
MH only
MH/MR
MH/MR/MMR
Not used
Do not change these settings.
If this bit is set to 0, ECM is switched off for all
communications.
Do not change the setting.
(0,1) - The machine will disconnect the line without
sending a fax message if the last 8 digits of the
Setting received CSI do not match the last 8 digits of the
None dialed telephone number. This does not work when
8 digit CSI manually dialed.
4 digit CSI (1,0) - The same as above, except that only the last
CSI/RTI 4 digits are compared.
(1,1) - The machine will disconnect the line without
sending a fax message, if the other end does not
identify itself with an RTI or CSI.
(0,0) - Nothing is checked; transmission will always
go ahead.
Note: This function does not work when dialing is
done from the external telephone.
Set this bit to 1 if the user expects to receive
telephone calls at the same number that the
machine is connected to. The machine will then alert
the user if a phone call comes in.
Do not change the setting.
The setting determined by these bits is informed to
the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
5-20
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