Did Wink; Fxo Operations For Tel-To-Ip Calls; Automatic Dialing - AudioCodes Mediant 1000B User Manual

The relevant parameters for configuring Dialing Time include the following:

DTMFDigitLength (100 msec): time for generating DTMF tones to the PSTN (PBX)
side

DTMFInterDigitInterval (100 msec): time between generated DTMF digits to PSTN
(PBX) side
27.13.1.3

DID Wink

The device's FXO ports support Direct Inward Dialing (DID). DID is a service offered by
telephone companies that enables callers to dial directly to an extension on a PBX without
the assistance of an operator or automated call attendant. This service makes use of DID
trunks, which forward only the last three to five digits of a phone number to the PBX. If, for
example, a company has a PBX with extensions 555-1000 to 555-1999, and a caller dials
555-1234, the local central office (CO) would forward, for example, only 234 to the PBX.
The PBX would then ring extension 234.
DID wink enables the originating end to seize the line by going off-hook. It waits for
acknowledgement from the other end before sending digits. This serves as an integrity
check that identifies a malfunctioning trunk and allows the network to send a re-order tone
to the calling party.
The "start dial" signal is a wink from the PBX to the FXO device. The FXO then sends the
last four to five DTMF digits of the called number. The PBX uses these digits to complete
the routing directly to an internal station (telephone or equivalent).

DID Wink can be used for connection to EIA/TIA-464B DID Loop Start lines

Both FXO (detection) and FXS (generation) are supported

27.13.2 FXO Operations for Tel-to-IP Calls

The FXO device provides the following FXO operating modes for Tel-to-IP calls:

Automatic Dialing (see 'Automatic Dialing' on page 572)

Collecting Digits Mode (see 'Collecting Digits Mode' on page 573)

FXO Supplementary Services (see 'FXO Supplementary Services' on page 574)
•
Hold/Transfer Toward the Tel side
•
Hold/Transfer Toward the IP side
•
Blind Transfer to the Tel side
27.13.2.1

Automatic Dialing

Automatic dialing is defined using the Web interface's Automatic Dialing (TargetOfChannel
ini file parameter) page, described in see 'Configuring Automatic Dialing' on page 560.
The SIP call flow diagram below illustrates Automatic Dialing.
User's Manual
Mediant 1000B Gateway and E- SBC
572 Document #: LTRT-27044