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SERVICE TABLES AND PROCEDURES
BIT SWITCHES
4.2.4. Communication Switches
Communication Switch 00
No
FUNCTION
Compression modes
available in receive mode
Bit 1
0
Modes
0
0
0
MH only
1
0
1
MH/MR
1
0
MH/MR/MMR
1
1
Not used
Compression modes
available in transmit mode
2
Bit 3
2
Modes
0
0
MH only
3
0
1
MH/MR
1
0
MH/MR/MMR
1
1
Not used
4-7 Not used
Communication Switch 01
No
FUNCTION
ECM
0
0: Off 1: On
EFC during transmission
1
0: Off 1: On
Wrong connection
prevention method
Bit 3 Bit 2
Setting
0
0
2
0
1
1
0
3
1
1
Operator call if no response
is received in reply to
4
NSF/DIS
0: Disabled
1: Enabled
Not used
5
Maximum printable page
length available
6
Bit 7 Bit 6
Setting
0
0
7
0
1
1
0
1
1
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.
Cross reference
EFC compression in transmission: Communication
Switch 01, bit 1.
Do not change the settings.
If this bit is 0, ECM is switched off for all
communications.
If this bit is 0, EFC is switched off during transmission.
(0,1) - The machine will not transmit if the last 8 digits
of the received CSI do not match the last 8 digits of the
dialed telephone number. This does not work for
None
manual dialing.
8 digit CSI
(1,0) - The same as above, except that only the last 4
4 digit CSI
digits are compared.
CSI/RTI
(1,1) - The machine will not transmit if the other end
does not identify itself with an RTI or CSI.
(0,0) - Nothing is checked; transmission will always go
ahead.
Set this bit to 1 if the user expects to receive phone
calls at the same number which the machine is
connected to.
Do not change the setting.
The setting determined by these bits is informed to the
transmitting terminal in the pre-message protocol
exchange (in the DIS/NSF frames).
No limit
B4 and A4
A4
Not used
COMMENTS
COMMENTS
4-30
July 30th, 1996
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