WSW19 - Page 286

 App. 

4-23 

Confidential

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 

NOTE:

  Selector 7 takes effect only in models supporting V.34 mode. 

  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.