Gestetner B147, Service Manual

Page: 844 / 1081

BIT SWITCHES
B603 50 SM
3.2.4 COMMUNICATION SWITCHES
Communication Switch 00 SP No. 1-104-001
No FUNCTION COMMENTS
0
to
1
Compression modes available
in receive mode
Bit 1 0 Modes
0 0 MH only
0 1 MH/MR
1 0 MH/MR/MMR
1 1 MH/MR/MMR/
JBIG
These bits determine the compression capabilities
to be declared in phase B (handshaking) of the T.30
protocol.
2
to
3
Compression modes available
in transmit mode
Bit 3 2 Modes
0 0 MH only
0 1 MH/MR
1 0 MH/MR/MMR
1 1 MH/MR/MMR/
JBIG
These bits determine the compression capabilities
to be used in the transmission and to be declared in
phase B (handshaking) of the T.30 protocol.
4 Not used Do not change the setting.
5 JBIG compression method:
Reception
0 : Only basic supported
1 : Basic and optional both
supported
Change the setting when communication problems
occur using JBIG compression.
6 JBIG compression method:
Transmission
0 : Basic mode priority
1 : Optional mode priority
Change the setting when communication problems
occur using JBIG compression.
7 Closed network (reception)
0: Disabled
1: Enabled
1: Reception will not go ahead if the ID code of the
other terminal does not match the ID code of this
terminal. This function is only available in NSF/NSS
mode.