UCM6200 Series User Manual 
Busy Detection is  used to  detect far  end hangup or for detecting  busy signal. The 
default setting is "Yes". 
If  "Busy  Detection"  is  enabled,  users  can  specify  the  number  of  busy tones  to  be 
played before hanging up. The default setting is 2. Better results might be achieved if 
set to 4, 6  or even  8. Please  note that the higher the number is, the more  time is 
needed  to  hangup  the  channel.  However,  this  might  lower  the  probability  to  get 
random hangup. 
Congestion detection is used to detect far end congestion signal. The default setting 
is "Yes". 
If  "Congestion  Detection"  is  enabled,  users  can  specify  the  number  of  congestion 
tones to wait for. The default setting is 2. 
Select the country for  tone settings.  If  "Custom"  is selected,  users  could manually 
configure  the  values  for  Busy  Tone  and  Congestion  Tone.  The  default  setting  is 
"United States of America (USA)". 
Syntax:   
f1=val[@level][,f2=val[@level]],c=on1/off1[-on2/off2[-on3/off3]]; 
Frequencies are in Hz and cadence on and off are in ms. 
Frequencies Range: [0, 4000) 
Busy Level Range: (-300, 0) 
Cadence Range: [0, 16383]. 
Select Tone Country "Custom" to manually configure Busy Tone value. 
Default value: 
f1=480@-50,f2=620@-50,c=500/500 
Syntax:   
f1=val[@level][,f2=val[@level]],c=on1/off1[-on2/off2[-on3/off3]]; 
Frequencies are in Hz and cadence on and off are in ms. 
Frequencies Range: [0, 4000) 
Busy Level Range: (-300, 0) 
Cadence Range: [0, 16383]. 
Select Tone Country "Custom" to manually configure Busy Tone value. 
Default value: 
f1=480@-50,f2=620@-50,c=250/250 
Click on "Detect" to detect the busy tone, Polarity Reversal and Current Disconnect 
by PSTN. Before the detecting, please make sure there are more than one channel 
configured and working properly. If the detection has busy tone, the "Tone Country" 
option will be set as "Custom".