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30 November, 1999
4.2.4 COMMUNICATION SWITCHES
Communication Switch 00
No
FUNCTION
0
Compression modes available
in receive mode
1
Bit 1
0
0
0
0
1
1
0
1
1
2
Compression modes available
in transmit mode
3
Bit 3
2
0
0
0
1
1
0
1
1
4-7 Not used
Communication Switch 01
No
FUNCTION
0
ECM
0: Disabled 1: Enabled
1
Not used
2
Wrong connection prevention
method
3
Bit 3 Bit 2
0
0
0
1
1
0
1
1
4
Operator call if no response is
received in reply to NSF/DIS
0: Disabled 1: Enabled
5
Not used
6
Maximum printable page
length available
7
Bit 7 Bit 6
0
0
0
1
1
0
1
1
These bits determine the compression
capabilities declared in phase B (handshaking)
Modes
of T.30 protocol.
MH only
MH/MR
MH/MR/MMR
Not used
These bits determine the compression
capabilities used in the transmission and
Modes
declared in phase B (handshaking) of T.30
MH only
protocol.
MH/MR
MH/MR/MMR
Not used
Do not change these settings.
If this bit is 0, ECM is switched off for all
communications.
Do not change this settings.
(01) - The machine will not transmit if the last 8
digits of the received CSI do not match the last 8
Setting
digits of the dialed telephone number. This does
None
not work for manual dialing.
8 digit CSI
(10) - The same as above, except that only the
4 digit CSI
last 4 digits are compared.
(11) - The machine will not transmit if the other
CSI/RTI
end does not identify itself with an RTI or CSI.
(00) - Nothing is checked; transmission will
always go ahead.
Note: When enabling wrong connection
prevention, disable AI short protocol.
Set this bit to 1 if the user expects to receive
telephone calls at the same number that the
machine is connected to. The machine will then
alert the user if a phone call comes in.
Do not change the setting.
The receiving terminal informs the transmitting
terminal of the setting determined by these bits
Setting
in the pre-message protocol exchange (in the
No limit
DIS/NSF) frames.
B4
A4
Not used
COMMENTS
COMMENTS
4-25
BIT SWITCHES
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