MFC-8220
SERVICE MANUAL
A-15
WSW09 (Protocol definition 1)
Selector
No.
Function Setting and Specifications
1 Frame length selection 0: 256 octets 1: 64 octets
2 Use of non-standard commands 0: Allowed 1: Prohibited
3
4
No. of retries
No. 3 4
0 0 : 4 times
0 1 : 3 times
1 0 : 2 times
1 1 : 1 time
5 T5 timer 0: 300 sec. 1: 60 sec.
6 T1 timer 0: 35 sec. 1: 40 sec.
7
8
Elapsed time for time-out
control for no response from the
called station in automatic
sending mode
No. 7 8
0 0 : 60 sec.
(55 sec. for US and Canada)
0 1 : 140 sec.
1 0 : 90 sec.
1 1 : 35 sec.
NOTE:
Selectors 1 through 6 are not applicable in those models which do not support ECM.
l Selector 1: Frame length selection
Usually a single frame consists of 256 octets (1 octet = 8 bits). For communications lines
with higher bit error rate, however, set selector 1 to "1" so that the machine can divide a
message into 64-octet frames.
Remarks: The error correction mode (ECM) is a facsimile transmission manner in which
the machine divides a message into frames for transmission so that if any data
error occurs on the transmission line, the machine retransmits only those frames
containing the error data.
l
Selector 2: Use of non-standard commands
If this selector is set to "0," the machine may use non-standard commands (the machine’s
native-mode commands, e.g., NSF, NSC, and NSS) for communications. If it is set to "1,"
the machine will use standard commands only.
l
Selectors 3 and 4: No. of retries
These selectors set the number of retries in each specified modem transmission speed.
l Selector 5: T5 timer
This selector sets the time length for the T5 timer.
l Selector 6: T1 timer
This selector sets the time length for the T1 timer.
l Selectors 7 and 8: Elapsed time for time-out control
If the machine receives no response (no G3 command) from the called terminal in automatic
sending during the time set by these selectors, it disconnects the line.
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