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SERVICE TABLES AND PROCEDURES
BIT SWITCHES
4.2.5. G3 Switches
G3 Switch 00
No
FUNCTION
Monitor speaker during
communication (tx and rx)
0
Bit 1 Bit 0
0
0
1
0
1
1
0
1
1
Monitor speaker during
memory transmission
2
0: Disabled 1:Enabled
3
Not used
to
6
Back to back test
0: Disabled
1: Enabled
7
G3 Switch 01
No
FUNCTION
0
Not used
to
3
DIS frame length
0: 6 bytes 1: 4 bytes
4
5
Not used
to
7
(0, 0): The monitor speaker is disabled all through the
communication.
Setting
(0, 1): The monitor speaker is on up to phase B in the
Disabled
T.30 protocol.
Up to Phase B
(1, 0): Used for testing. The monitor speaker is on all
All the time
through the communication.
Not used
Make sure that you reset these bits after testing.
1: The monitor speaker is enabled during memory
transmission.
Do not change the settings.
Set this bit to 1 when you wish to do a back to back
test.
115 V model: Be sure to connect jumpers JP5 and
JP6 on the NCU before doing the test.
220 V model: Be sure to apply dc voltage between
wires L1 and L2 on the NCU.
Do not change the settings.
1: The 5th and 6th bytes in the DIS frame will not be
transmitted (set to 1 if there are communication
problems with PC-based faxes which cannot receive
the extended DIS frames).
Do not change the settings.
COMMENTS
COMMENTS
4-34
November 28th, 1995
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