Ricoh B079, Service Manual

Page: 799 / 948

BIT SWITCHES
SM 91 B547
Fax Op
tion
B54
7
3.2.9 G4 PARAMETER SWITCHES
NOTE: These G4 internal switches are for the Japanese model only. Do not
change these settings.
G4 Parameter Switch 00
No. FUNCTION COMMENTS
0
to
2
Network type
Bit 2 1 0 Type
x 0 0 Circuit switched
ISDN
Other settings: Not used
Do not change the default setting.
3-7 Not used Do not change the default settings.
G4 Parameter Switch 01
No. FUNCTION COMMENTS
0 Voice coding
0: µ law 1: A law
0: This setting is used in USA.
1: This setting is used in Europe and Asia.
1 Action when [SETUP] signal
without HLC is received
0: Respond to the call
1: Not respond to the call
If there are several TEs on the same bus and
the machine responds to calls for another TE,
the call may be without HLC information.
Identify the type of calling terminal and
change this bit to 1 if the caller is not a fax
machine.
2-6 Not used Do not change these settings.
7 Signal attenuation for G3 fax
signals received from ISDN line (-
6dB)
0: Off 1: On
0: If an analog signal comes over digital line,
the signal level after decoding by the TE is
theoretically the same as the level at the
entrance to the digital line. However, this
sometimes causes the received signal level
to be too high at the received end. In this
case, set this bit to 1 to adjust the
attenuation level.
G4 Parameter Switch 02
No. FUNCTION COMMENTS
0
to
1
Data rate (kbps)
Bit 1 0 Setting
0 0 64
kbps
0 1 56 kbps
Other settings: Not used
2-7 Not used Do not change these settings.
G4 Parameter Switch 03 - Not used (do not change these settings)
G4 Parameter Switch 04 - Not used (do not change these settings)