Pstn Detection; Figure 25: Pstn Detection For Analog Trunk - Grandstream Networks UCM6102 User Manual

Congestion Tone

PSTN Detection

PSTN DETECTION
The UCM61xx provides PSTN detection function to help users detect the busy tone, Polarity Reversal and
Current Disconnected by PSTN during analog trunk setup. Select the analog trunk under Web
GUI->PBX->Basic/Call Routes->Analog Trunks page first. In the dialog window to edit the trunk, click on
"Detect" for "PSTN Detection". The following dialog will show for users to perform the detection.
Firmware Version 1.0.1.22
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".

Figure 25: PSTN Detection For Analog Trunk

UCM6102/6104/6108/6116 USER MANUAL Page 57 of 138