WSW07 ; NOTE: - Page 274

 App. 

4-11 

Confidential

WSW07 

(Dial tone setting 1)

Selector 

No. 

Function 

Setting and Specifications 

1 

2 

Dial tone frequency band 
control 

No.  1  2 

0  0 

:   Narrows by 10 Hz 

0  1 

:   Initial value 

1  X 

:   Widens by 10 Hz 

3 

Line current detection 
(Not used.) 

0:  No 

1:  Yes 

4 

| 

6 

2nd dial tone detection level 

(Z = 600 

Ω

) 

No.  4  5  6 

 0 

0  0  :   -21 dBm 

 0 

0  1  :   -24 dBm 

 0 

1  0  :   -27 dBm 

 0 

1  1  :   -30 dBm 

 1 

0  0  :   -33 dBm 

 1 

0  1  :   -36 dBm 

 1 

1  0  :   -39 dBm 

 1 

1  1  :   -42 dBm 

7 

Allowable instantaneous 
interrupt during reception of 
1st dial tone 

0:  30 ms 

1:  50 ms 

8 Not 

used. 

NOTE:  

Selectors 1, 2, 4 through 7 are not applicable in those countries where no dial tone or line  

current detection is supported, e.g., U.S.A. 

NOTE:  

Selector 3 is not applicable to those models having no loop current detection function. 

  Selectors 1 and 2:  Dial tone frequency band control 

These selectors set the frequency band for the 1st dial tone and busy tone (before dialing) to be  
detected. 
This setting is effective only when selectors 1 through 3 on WSW05 are set to "1,1,1." 

  Selector 3:  Line current detection (Not used.) 

This selector determines whether or not to detect a line current before starting dialing. 

  Selectors 4 through 6:  2nd dial tone detection level 

These selectors set the detection level of the 2nd dial tone. 

  Selector 7:  Allowable instantaneous interrupt during reception of 1st dial tone 

This selector sets the allowable instantaneous interrupt period that should be ignored during  
reception of the 1st dial tone.