Did Wink - AudioCodes Mediant 1000 User Manual

SIP User's Manual
Relevant parameters: EnableReversalPolarity, EnableCurrentDisconnect,
CurrentDisconnectDuration, CurrentDisconnectDefaultThreshold, and
TimeToSampleAnalogLineVoltage.
Detection of Reorder, Busy, Dial, and Special Information Tone (SIT) tones: The
call is immediately disconnected after a Reorder, Busy, Dial, or SIT tone is detected
on the Tel side (assuming the PBX / CO generates this tone). This method requires
the correct tone frequencies and cadence to be defined in the Call Progress Tones
file. If these frequencies are not known, define them in the CPT file (the tone produced
by the PBX / CO must be recorded and its frequencies analyzed -- refer to Adding a
Reorder Tone to the CPT File in the Reference Manual). This method is slightly less
reliable than the previous one. You can use the CPTWizard (described in Call
Progress Tones Wizard in the Reference Manual) to analyze Call Progress Tones
generated by any PBX or telephone network.
Relevant parameters: DisconnectOnBusyTone and DisconnectOnDialTone.
Detection of silence: The call is disconnected after silence is detected on both call
directions for a specific (configurable) amount of time. The call isn't disconnected
immediately; therefore, this method should only be used as a backup option.
Relevant parameters: EnableSilenceDisconnect and FarEndDisconnectSilencePeriod.
Special DTMF code: A digit pattern that when received from the Tel side, indicates to
the device to disconnect the call.
Relevant ini file parameter: TelDisconnectCode.
Interruption of RTP stream: Relevant parameters: BrokenConnectionEventTimeout
and DisconnectOnBrokenConnection.
Note:
Protocol-based termination of the call from the IP side
Note:
7.3.1.4

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.
Version 5.4
This method operates correctly only if silence suppression is not used.
The implemented disconnect method must be supported by the CO or PBX.
409
7. IP Telephony Capabilities
May 2008