<WSW19>

Selector No.

Function

 

Setting and Specifications

 

 

 

 

 

 

1

 

No. 1

2

3

 

I

First transmission speed choice

No. 4

5

6

 

for fallback

0

0

0: 2,400 bps

3

 

0

0

1: 4,800 bps

 

 

 

 

0

1

0: 7,200 bps

4

 

0

1

1: 9,600 bps

I

Last transmission speed choice

1

0

0: 12,000 bps

for fallback

1

0

1: 14,400 bps

 

6

 

1

1

0: 14,400 bps

 

 

1

1

1: 14,400 bps

 

 

 

 

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 machine attempts to establish the transmission link via the MODEM. If the establishment fails, the machine automatically steps down to the next lowest speed and attempts to establish the transmission link again. The machine 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

If this selector is set to "0," selectors 5 through 8 on the WSW38 through WSW40 and on WSW41, will become effective.

App. 1-25

Confidential