App.1-36
Confidential
■ WSW40 (V.34 modem settings)
- Selectors 3 through 8: Masking of symbol rate(s)
These selectors allow you to limit the transmission speed range in V.34 mode by masking the desired
symbol rate(s)
.
Transmission speeds assigned to the symbol rates are listed on the next page
.
The
setting made by these selectors will limit the setting made by selectors 1 through 4 on WSW39
.
If selector 3 is set to “1” to mask the 3,429 symbols/second when the first transmission speed choice
is 33,600 bps (specified by selectors 1 through 4 of WSW39), for example, then the allowable
maximum transmission speed will be limited to 31,200 bps. If selector 8 is set to “1” to mask the
2,400 symbols/second when the first transmission speed choice is 33,600 bps, then the allowable
maximum transmission speed remains 33,600 bps.
If selector 8 is set to “1” to mask the 2,400 symbols/second when the first transmission speed choice is
21,600 bps (specified by selectors 1 through 4 on WSW39), then the allowable maximum transmission
speed remains 21,600 bps but the minimum transmission speed will be limited to 4,800 bps.
Selector No. Function Setting and Specifications
1
2
Not used.
3
l
8
Masking of symbol rate(s)
Not masking Masking
No. 3
No. 4
No. 5
No. 6
No. 7
No. 8
0
0
0
0
-
0
1
1
1
1
-
1
3,429 symbols/sec
3,200 symbols/sec
3,000 symbols/sec
2,800 symbols/sec
Not used.
2,400 symbols/sec
Note:
WSW40 takes effect only when the V.34 mode is permitted (WSW19, selector 7) in models
supporting V.34 mode.
Symbol rate
Transmission
speed (bps)
Symbol rate
Transmission
speed (bps)
Symbol rate
Transmission
speed (bps)
2,400 2,400 3,000 4,800 3,429 4,800
4,800 7,200 7,200
7,200 9,600 9,600
9,600 12,000 12,000
12,000 14,400 14,400
14,400 16,800 16,800
16,800 19,200 19,200
19,200 21,600 21,600
21,600 24,000 24,000
26,400 26,400
28,800 28,800
2,800 4,800 3,200 4,800 31,200
7,200 7,200 33,600
9,600 9,600
12,000 12,000
14,400 14,400
16,800 16,800
19,200 19,200
21,600 21,600
24,000 24,000
26,400
28,800
31,200
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