PLANET VIP-1680 - Manual (Page 76)

2. Voice Detection:
Voice Detection-based answer supervision is a feature where the Gateway can be configured to “listen”
on the line for different tones and voice. The Gateway sends a “connect” signals out or “disconnect”
signaling using internet.
H.323 scenario description: Loop Start Reverse Battery Æ PSTN line was set polarity reverse
a) The gateway can send the “Q.931 connect” H.323 signals to Billing System of ITSP, after the user
pick up the Phone and detect the PSTN line answer voltage.
b) The gateway can send the “Q.931 Release” H.323 signals to Billing System of ITSP, after the user
hang up the Phone and detect PSTN line disconnect voltage.
Scenario description: Voice Detection based on answer supervision
PSTN Line was not support Polarity Reverse:
a) The gateway can send the Q.931 connect H.323 signals to Billing System of ITSP, after the user pick
up the Phone and detect the voice.
b) The gateway can send the Q.931 Release H.323 signals to Billing System of ITSP, after the user
hang up the phone and detect the hang up voice.
c) This type of answer supervision is not 100% accurate. Any voice frequency is detected as connect,
including any intercept or recorded messages.
SIP scenario description: Loop Start Reverse Battery Æ PSTN line was set polarity reverse
a) The gateway can send the “200 OK” SIP signals to Billing System of ITSP, after the user pick up the
Phone and detect the PSTN line answer voltage.
b) The gateway can send the “200 BYE” SIP signals to Billing System of ITSP, after the user hang up
the Phone and detect PSTN line disconnect voltage.
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