83  VoIP Subscriber Gateways 
 
  12 kHz – when there is an outgoing call, tariff pulse with 12 kHz frequency will be 
sent in the line one time per second; 
  16 kHz – when there is an outgoing call, tariff pulse with 16 kHz frequency will be 
sent in the line one time per second; 
-  Rx  AGC  –  when  selected,  a  received  signal  will  be  amplified  to  the  specified  level 
(maximum signal  amplification is  +/-  15  dB),  otherwise—the amplification will  not  be 
carried out. 
-  Rx  AGC  Level –  determines the value of the level to which an analogue signal will be 
amplified when receiving (allowed values: -25, -22, -19, -16, -13, -10, -7, -4, -1 dB). 
-  Tx  AGC  –  when  selected,  a  transmitted  signal  will  be  amplified  to  the  specified  level 
(maximum signal  amplification is  +/-  15  dB),  otherwise—the amplification will  not  be 
carried out; 
-  Tx  AGC  Level–determines  the  value  of  the  level  to  which  an  analogue  signal  will  be 
amplified when transmitting (allowed values: -25, -22, -19, -16, -13, -10, -7, -4, -1 dB). 
-  Stop  dialing  #  –  when  selected, use  #  button  on  the  phone  unit  to  end  the  dialling, 
otherwise  #  will  be  recognized  as  a  part  of  the  number.  To  assign  the  required  FXS 
profile for subscriber port, select this port from the port settings or open port settings in 
the edit mode and select required profile from the configured profile list for ‘FXS profile’ 
parameter in the ‘Line profile’ section. 
-  CPC – when checked, perform a short-time break of the subscriber loop on clearback 
from the opposite subscriber's side; 
-  CPC time (ms) - duration of short-term subscriber loop rupture (range from 200 to 3000 
ms); 
To store changes to the operative memory of the device, click the Save Changes button. To store 
settings into the non-volatile memory, click Apply button. 
 
2.4.4 The ‘Line acoustic signals’ submenu 
This setting allows for the modification of information acoustic signals parameters as well as for 
the upload of ready files with the tones settings. 
Changes  in  this  submenu  take  effect  immediately  after  clicking  the  'Apply'  button.  Device 
reboot is not required.