Direct Inward Dialing Parameters - AudioCodes Mediant 800B User Manual

Parameter
57.10.5.12

Direct Inward Dialing Parameters

The Direct Inward Dialing (DID) parameters are described in the table below.
Parameter
Web/EMS: DID Wink
CLI: did-wink-enbl
[EnableDIDWink]
User's Manual
Dialing'' on page 497.
Table 57-53: DID Parameters
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:

The FXO interface dials DTMF (or MF) digits upon detection of a
Wink signal, instead of a dial tone.

The FXS interface 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 FXS interface 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: The FXS interface 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 FXS
interface 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: 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 FXO interface dials the digits, "KP911ST" (denotes
*911#).
3) The FXO interface waits for polarity reversal change from
936
Mediant 800B Gateway and E-SBC
Description
Description
Document #: LTRT-10620