G4 Parameter Switches - Gestetner A265 Service Manual

BIT SWITCHES

2.2.2 G4 PARAMETER SWITCHES

Parameter Switch 00
No. FUNCTION
0
Network type
1
Bit 2 1 0 Type
2
x 0 0 Circuit
Other settings: Not used
3-7
Not used
Parameter Switch 01
No. FUNCTION
0
Voice coding
0: µ law
1: A law
1 Action when a [SETUP]
signal without HLC is
received
0: Respond to the call
1: Do not respond to the
call
2-3
Not used
4
Signal attenuation level for G3 fax signals received from the ISDN line.
5
If an analog signal comes over an digital line, the signal level after decoding by
6 the TE is theorically 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, adjust the decoded signal's attenuation level using
these switches.
The values in the "Codec" column below show the attenuation level at the G4
interface board. The values in the "Modem" column show the actual attenuation
level at the modem, because the signal is attenuated again on the FCU by -6dB.
Bit 6 5 4 Codec
0 0 0 -4.5dB
0 0 1 -2.5dB
0 1 0 -0.5dB
0 1 1 +1.5dB -4.5dB (default setting)
1 0 0 +3.5dB -2.5dB
1 0 1 +5.5dB -0.5dB
1 1 0 +7.5dB +1.5dB
1 1 1 +9.5dB +3.5dB
7
Not used
A256/A257
CÓPIA NÃO CONTROLADA
Do not change the default setting.
switched
ISDN
Do not change the default settings.
0: This setting is used in Japan, Taiwan, and the
USA.
1: This setting is used in Europe and Asia.
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.
Do not change the default settings.
Modem (Actual attenuation level)
-10.5dB
-8.5dB
-6.5dB
Do not change the default setting.
2-10
CÓPIA NÃO CONTROLADA
COMMENTS
COMMENTS
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