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Parameter # Description Units
50 PSTN dial tone minimum off time. The minimum period of silence that must exist
between cadenced PSTN dial tones if the tone sequence is to be valid.
Country Default
United States 0
Australia 0
France 0
Germany 0
Netherlands 0
United Kingdom 0
India 0
Korea 0
China 0
1 ms (0 ms
to 2000 ms)
51 PSTN dial tone maximum off time. Maximum period of silence that can exist
between cadenced PSTN dial tones if the tone sequence is to be valid.
Country Default
United States 0
Australia 0
France 0
Germany 0
Netherlands 0
United Kingdom 0
India 0
Korea 0
China 0
1 ms (0 ms
to 2000 ms)
52 PSTN dial tone detect threshold. Sets the detection threshold for a PSTN dial
tone. If below this level, the PSTN tone will not be detected.
Country Default
United States 320 (–0.1 dBm)
Australia 350 (–0.1 dBm)
France 400 (–0.1 dBm)
Germany 350 (–0.1 dBm)
Netherlands 380 (–0.1 dBm)
United Kingdom 320 (–0.1 dBm)
India 450 (–0.1 dBm)
Korea 320 (–0.1 dBm)
China 450 (–0.1 dBm)
1 (260 to
510)
53 PSTN dial tone frequency 1. The center frequency for the first component of the
PSTN dial tone.
Country
Default
United States 350
Australia 425
France 440
Germany 410
Netherlands 415
United Kingdom 350
India 350
Korea 350
China 350
1 Hz (100 Hz
to 1200 Hz)