Brother FAX-170 Service Manual page 109

Selector
No.
1 Frame length selection
2 Not used.
3
| No. of retries
4
5 T5 timer
6 T1 timer
Elapsed time for time-out
7
control for no response from
the called station in automatic
8
sending mode
NOTE: Selectors 1 through 5 are not applicable in those models which do not support ECM.
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 facsimile equipment can
divide a message into 64-octet frames.
Remarks: The error correction mode (ECM) is a facsimile transmission manner in which
the equipment divides a message into frames for transmission so that if any data
error occurs on the transmission line, the equipment retransmits only those
frames containing the error data.
Selectors 3 and 4: No. of retries
These selectors set the number of retries in each specified modem transmission speed.
Selector 5: T5 timer
This selector sets the time length for the T5 timer.
Selector 6: T1 timer
This selector sets the time length for the T1 timer.
Selectors 7 and 8: Elapsed time for time-out control
If the equipment receives no response (no G3 command) from the called terminal in auto-
matic sending during the time set by these selectors, it disconnects the line.
WSW09
(Protocol definition 1)
Function
V – 21
Setting and Specifications
0: 256 octets 1: 64 octets
No. 3 4
0 0 : 4 times
0 1 : 3 times
1 0 : 2 times
1 1 : 1 time
0: 300 sec. 1: 60 sec.
0: 35 sec. 1: 40 sec.
No. 7 8
0 0 : 50 sec.
0 1 : 70 sec.
1 0 : 90 sec.
1 1 : 35 sec.