AudioCodes Mediant 500L - Page 477

Version 7.2 477 Mediant 500L Gateway & E-SBC
User's Manual 20. Coders and Profiles
Parameter Description

The parameter is applicable to FXS and FXO interfaces.
 The current disconnect duration is configured by the
CurrentDisconnectDuration parameter.
 The current disconnect threshold (FXO only) is configured 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.
DID Wink
enable-did-wink
[TelProfile_EnableDIDWink]
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).