WSW39 ; NOTE: - Page 306

 App. 

4-43 

Confidential

WSW39 

(V.34 transmission speed) 

Selector 

No. 

Function 

Setting and Specifications

1 

| 

4 

First transmission speed choice for 
fallback 

No. 

1 2 3 4 

No. 

5 6 7 8 

0 0 0 0 :  2400 

bps 

0 0 0 1 :  4800 

bps 

0 0 1 0 :  7200 

bps 

0 0 1 1 :  9600 

bps 

0 1 0 0 : 12000 

bps 

0 1 0 1 : 14400 

bps 

0 1 1 0 : 16800 

bps 

0 1 1 1 : 19200 

bps

5 

| 

8 

Last transmission speed choice for 
fallback 

1 0 0 0 : 21600 

bps 

1 0 0 1 : 24000 

bps 

1 0 1 0 : 26400 

bps 

1 0 1 1 : 28800 

bps 

1 1 0 0 : 31200 

bps 

1 1 0 1 : 33600 

bps 

1 1 1 0 : 33600 

bps 

1 1 1 1 : 33600 

bps 

NOTE: 

 WSW39 takes effect only when the V.34 mode is permitted (WSW19, selector 7) in models  

supporting V.34 mode.  For the transmission speed setting in other modes, refer to WSW19. 

  Selectors 1 through 8:  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 4, the machine attempts to establish the transmission link via the  
modem. If the establishment fails, the machine automatically steps down to the next highest 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 5 through 8. 
If the modem always falls back to a low transmission speed (e.g., 24,000 bps), set the first  
transmission speed choice to the lower one (e.g., modify it from 31,200 bps to 26,400 bps) in order  
to deactivate the high-speed modem function and reduce the training time for shorter transmission  
time. 
WSW39 will be limited by selectors 3 through 8 on WSW40.