AudioCodes Mediant 800B User Manual page 480

Tel Profile Parameter
DID Wink
enable-did-wink
[TelProfile_EnableDIDWink]
User's Manual
Global Parameter
by the CurrentDisconnectDefaultThreshold parameter.

The frequency at which the analog line voltage is sampled is
configured by the TimeToSampleAnalogLineVoltage
parameter.

The corresponding global parameter is
EnableCurrentDisconnect.
Enables Direct Inward Dialing (DID) using Wink-Start signaling,
typically used for signaling between an E-911 switch and the
PSAP.

[0] Disable (default)

[1] Single = The device can be used for connection to
EIA/TIA-464B DID Loop Start lines. Both FXO (detection)
and FXS (generation) are supported:

FXO Interfaces: The device dials DTMF (or MF) digits
upon detection of a Wink signal, instead of a dial tone.

FXS Interfaces: The device generates a Wink signal
upon detection of an off-hook state, instead of playing a
dial tone.
For example: (Wink) KP I(I) xxx-xxxx ST (Off Hook)
Where:

I = one or two information digits

x = ANI
Note: The FXO interface generates such MF digits when the
Enable911PSAP parameter is set to 1.

[2] Double Wink = Double-wink signaling. This is applicable
to FXS interfaces only. The device generates the first Wink
upon detection of an off-hook state in the line. The second
Wink is generated after a user-defined interval (configured
by the TimeBetweenDIDWinks parameter) after which the
DTMF/MF digits are collected by the device. Digits that
arrive between the first and second Wink are ignored as
they contain the same number. For example:
(Wink) KP 911 ST (Wink) KP I(I) xxx-xxxx ST (Off Hook)

[3] Wink & Polarity=

FXS Interfaces: The device generates the first Wink
after it detects an off-hook state. A polarity change from
normal to reversed is generated after a user-defined
time (configured by the TimeBetweenDIDWinks
parameter). DTMF/MF digits are collected by the device
only after this polarity change. Digits that arrive between
the first Wink and the polarity change are ignored as
they always contain the same number. In this mode, the
device does not generate a polarity change to normal if
the Tel-to-IP call is answered by an IP party. Polarity
reverts to normal when the call is released. For
example:
(Wink) KP 911 ST (Polarity) KP I(I) xxx-xxxx ST (Off
Hook)

FXO Interfaces: For IP-to-Tel calls:
1) Upon incoming INVITE message, the FXO interface
goes off-hook (seizes the line).
2) Upon detection of a Wink signal from the Tel side
(instead of a dial tone), the device dials the digits,
480
Mediant 800B Gateway & E-SBC
Document #: LTRT-10632