Brother International FAX-8650P Service Manual - Page 119

If the establishment fails, the equipment automatically steps down to the next highest

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Selector No. 1 | 3 4 | 6 7 8 WSW19 (Transmission speed setting) Function First transmission speed choice for fallback Last transmission speed choice for fallback V. 34 mode V. 17 mode Setting and Specifications No. 1 2 3 No. 4 5 6 000 : 001 : 010 : 011 : 100 : 101 : 110 : 111 : 0: Permitted 0: Permitted 2,400 bps 4,800 bps 7,200 bps 9,600 bps 12,000 bps 14,400 bps 1: Prohibited 1: Prohibited l Selectors 1 through 6: First and last choices of transmission speed for fallback These selectors are used to set the modem speed range. With the first transmission speed choice specified by selectors 1 through 3, the equipment attempts to establish the transmission link via the modem. If the establishment fails, the equipment automatically steps down to the next highest speed and attempts to establish the transmission link again. The equipment repeats this sequence while stepping down the transmission speed to the last choice specified by selectors 4 through 6. If the modem always falls back to a low transmission speed (e.g., 4,800 bps), set the first transmission speed choice to the lower one (e.g., modify it from 12,000 bps to 7,200 bps) in order to deactivate the high-speed modem function and reduce the training time for shorter transmission time. Generally, to save the transmission time, set the last transmission speed choice to a higher one. l Selector 7: V. 34 mode This selector determines whether or not the equipment communicates with the remote station in the V. 34 mode when that station supports the V. 34 mode. V - 32

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V
- 32
WSW19
(Transmission speed setting)
Selector
No.
Function
Setting and Specifications
1
|
3
First transmission speed choice
for fallback
No. 1
2
3
No. 4
5
6
0
0
0
:
2,400 bps
0
0
1
:
4,800 bps
0
1
0
:
7,200 bps
4
|
6
Last transmission speed choice
for fallback
0
1
1
:
9,600 bps
1
0
0
:
12,000 bps
1
0
1
:
1
1
0
:
14,400 bps
1
1
1
:
7
V. 34 mode
0:
Permitted
1:
Prohibited
8
V. 17 mode
0:
Permitted
1:
Prohibited
Selectors 1 through 6:
First and last choices of transmission speed for fallback
These selectors are used to set the modem speed range.
With the first transmission speed choice
specified by selectors 1 through 3, the equipment attempts to establish the transmission link via
the modem.
If the establishment fails, the equipment automatically steps down to the next highest
speed and attempts to establish the transmission link again.
The equipment repeats this sequence
while stepping down the transmission speed to the last choice specified by selectors 4 through 6.
If the modem always falls back to a low transmission speed (e.g., 4,800 bps), set the first
transmission speed choice to the lower one (e.g., modify it from 12,000 bps to 7,200 bps) in order
to deactivate the high-speed modem function and reduce the training time for shorter transmission
time.
Generally, to save the transmission time, set the last transmission speed choice to a higher one.
Selector 7:
V. 34 mode
This selector determines whether or not the equipment communicates with the remote station in
the V. 34 mode when that station supports the V. 34 mode.