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UCM6510 IP PBX User Manual
Version 1.0.20.31
PSTN Detection
The UCM6510 provides PSTN detection function to help users detect the busy tone, Polarity Reversal and
Current Disconnect by making a call from the PSTN line to another destination. The detecting call will be
answered and up for about 1 minute. Once done, the detecting result will show and can be used for the
UCM6510 settings.
1. Go to UCM6510 Web GUIExtension/TrunkAnalog Trunks page.
2. Click to edit the analog trunk created for the FXO port.
3. In the dialog window to edit the analog trunk, go to “Tone Settings” section and click on “Detect” for
“PSTN Detection”.
Figure 98: UCM6510 FXO Tone Settings
4. Click on “Detect” to start PSTN detection.
Figure 99: UCM6510 PSTN Detection
If there are two FXO ports connected to PSTN lines, use the following settings for auto-detection.
Detect Model: Auto Detect.
Source Channel: The source channel to be detected.
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