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ATA Voice Field Reference
PSTN Line page (SPA3102)
ATA Administration Guide 208
B
Detect (PSTN) Long
Silence
If enabled, SPA will disconnect both call legs when the
PSTN side has no voice activity for a duration longer than
the length specified in the
Long Silence Duration
parameter during a gateway call
The default is yes.
Min CPC Duration Specify the minimum duration of a low tip-and-ring voltage
(below 1V) for the Gateway to recognize it as a CPC signal
or PSTN line removal. The default is 0.2.
Detect Disconnect
Ton e
If enabled, SPA will disconnect both call legs when it
detects the disconnect tone from the PSTN side during a
gateway call. Disconnect tone is specified in the
Disconnect Tone
parameter, which depends on the region
of the PSTN service.
The default is yes.
(PSTN) Long
Silence Duration
This value is minimum length of PSTN silence (or inactivity)
in seconds to trigger a gateway call disconnection if
Detect Long Silence
is yes.
The default is 30.
Silence Threshold This parameter adjusts the sensitivity of PSTN silence
detection. Choose from {very low, low, medium, high, very
high}. The higher the setting, the easier to detect silence
and hence easier to trigger a disconnection.
The default is medium.