Pstn Detection; Automatic Detection Of Pstn Parameters; Figure 15: Ucm6Xxx Fxo Tone Settings - Grandstream Networks UCM6 Series Manual

PSTN Detection

PSTN Detection module can be used to detect and configure following parameters:
•
Busy Tone: Depending on PSTN providers/countries/analog PBX, a busy tone signal can be used to
indicate to other party (UCM6xxx) that the call is ended.
•
Polarity Reversal: Depending on PSTN providers/countries/analog PBX, a polarity reversal signal can
be used to indicate to other party (UCM6xxx) that the call is ended.
•
Current Disconnect which is an interruption of line power from the CO switch/PSTN Provider or analog
PBX to the FXO port, which last for a specific duration depending on your PSTN provider or Co
Switch/PBX

Automatic Detection of PSTN Parameters

The UCM6XXX 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 finished, results will show and can be used for UCM6xxx settings.
1. Edit the analog trunk previously created.
2. In "Edit analog trunk" window, go to "Tone Settings" section.
Note: Tone Country includes a list of countries and their busy and congestion tones. Users can set it to
"Custom" and enter their busy and congestion tones if known.
3. Click on "Detect" to start PSTN detection.
•
If there are two analog lines connected, Auto Detect mode can be used.
Detect Model: Auto Detect.
Source Channel: The source channel to be detected.
Destination Channel: The channel to call during auto detection. For example, the second FXO port.
Destination Number: The number to be dialed for detecting. This number must be the actual PSTN
number for the FXO port used as the destination channel.

Figure 15: UCM6XXX FXO Tone Settings

UCM6XXX Analog Trunks Guide
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