Communication Switches - Ricoh Aficio 1515 Service Manual

BIT SWITCHES

3.2.4 COMMUNICATION SWITCHES

Communication Switch 00
No FUNCTION
0 Compression modes available
to in receive mode
1 Bit 1 0 Modes
0 0 MH only
0 1 MH/MR
1 0 MH/MR/MMR
1 1 MH/MR/MMR/
JBIG
2 Compression modes available
to in transmit mode
3 Bit 3 2 Modes
0 0 MH only
0 1 MH/MR
1 0 MH/MR/MMR
1 1 MH/MR/MMR/
JBIG
4
Not used
5 JBIG compression method:
Reception
0: Only basic supported
1: Basic and optional both
supported
6
JBIG compression method:
Transmission
0: Basic mode priority
1: Optional mode priority
7
Not used
Communication Switch 01
No FUNCTION
0
ECM
0: Off 1: On
1-5 Not used
6 Maximum printable page length
to available
7 Bit 7 6 Setting
0 0 No limit
0 1 B4 (364 mm)
1 0 A4 (297 mm)
1 1 Not used
COMMENTS
These bits determine the compression capabilities
to be declared in phase B (handshaking) of the T.30
protocol.
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.
Do not change the setting.
Change the setting when communication problems
occur using JBIG compression.
Change the setting when communication problems
occur using JBIG compression.
Do not change the settings.
COMMENTS
If this bit is set to 0, ECM is switched off for all
communications.
In addition, V.8 protocol and JBIG compression are
switched off automatically.
Do not change the settings.
The setting determined by these bits is informed to
the transmitting terminal in the pre-message
protocol exchange (in the DIS/NSF frames).
3-22
9 March 2004
SP No. 1-104-001
SP No. 1-104-002