Brother International IntelliFax-3550 Service Manual - Page 114

for fallback, Last transmission speed choice

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WSW19 (Transmission speed setting) Selector No. Function 1 | First transmission speed choice for fallback 3 4 | Last transmission speed choice for fallback 6 Setting and Specifications No. 1 2 3 No. 4 5 6 000 : 001 : 010 : 011 : 100 : 101 : 110 : 111 : 2,400 bps 4,800 bps 7,200 bps 9,600 bps 12,000 bps 14,400 bps 7 Not used. 8 V.17 mode 0: Permitted 1: Prohibited q 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 synchronize the data transmission via the MODEM. If the synchronization fails, the equipment automatically steps down to the next lowest speed and attempts to synchronize the data transmission 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. V - 32

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V –
32
WSW19
(Transmission speed setting)
Function
Selector
No.
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
0
1
1
:
9,600 bps
1
0
0
:
12,000 bps
1
0
1
:
1
1
0
:
14,400 bps
1
1
1
:
Setting and Specifications
7
Last transmission speed choice
for fallback
First transmission speed choice
for fallback
8
Not used.
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 synchronize the data
transmission via the MODEM.
If the synchronization fails, the equipment automatically steps
down to the next lowest speed and attempts to synchronize the data transmission 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.
1
|
3
4
|
6