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Dr-Fix-It! Common Telephone PBX Terminology.
A Glosasary of Common Telephone and PBX Terms. A Resource for Owners, Managers, Builders and Operators of Commercial and Residential Buildings. Dr-Fix-It Defines Common Telephone PBX Terminology
 
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ACD Information   Provides information regarding an Automatic Call Distribution Group.

Call Action Provided   An indication that a particular call action has been started or stopped.

Call Alerting   An indication that a telephone is ringing.

Call Alternated   An indication that a party has alternated between an active call and a held call on the same telephone.

Call Conferenced   An indication that two telephone calls have been joined in a conference call.

Call Connected   An indication that a party has become an active participant in a phone call.

Call Held   An indication that a phone call has been placed on hold.

Call Parked   An indication that a phone call has been parked by one of the parties in the call.

Call Parties   provides information regarding the parties in a telephone call.

Call Picked   An indication that a phone call has been picked.

Call Rejected   An indication that a telephone call has not been completed.

Call Routed   An indication that an incoming telephone call has been routed from one called party to a new called party.

Call Transferred   An indication that a phone call has been transferred from one party to another.

CLID  Caller Identification Display or Caller ID

Data Collected   Provides the PBX equipment Database with data that has been collected for a specified party.

Disconnected   An indication that a party is no longer participating in a phone call.

DNIS   Dialed Number Identification Service enables a company to track the volume of a telephone number when more than one number is directed to the same PBX port. For example, when several 800 numbers come into the same lines, DNIS data contains the originating number and lets the PBX keep count.

Feature Invoked   An indication that a party has initiated a switch (PBX) feature.

Hardware Status   provides information regarding the current status of various types of hardware.

Indicator Provided   An indication that an indicator has been provided to the telephone of a party.

ISDN  Integrated Services Digital Network integrates data, voice,and video signals onto a digital telephone line.

Network Reached   An indication that an outgoing telephone call has progressed to the point where the local switch is sending the call establishment request out to the network on an outbound trunk.

Party Status   provides information regarding the current status of a specified party.

PBX  Private Branch Exchange: Term given to describe a private switching system usually within a building or campus.   Also Public Branch Exchange: The term given to generally describe any central public switching capability.

Request Instruction   requests that an application program provide instructions on how to proceed with a telephone call.

Resource Deleted   An indication that a resource has been deleted from the switch’s control.

Response   A response that indicates whether the switch accepted or rejected a prior application request from an application program.

Setup  An indication that a telephone is off hook or in the dial tone state.

SMDR  Station Message Detail Recording. Recorded raw data of telephone calls made in the PBX. The SMDR contains details such as phone number dialed, length of phone call and time when the telephone call was placed.

Switch Status   A system message that indicates that a change in status for the switch has occurred.
      Add Party   Adds a new party to an existing telephone call.
      Alternate Call   Alternates between an active call and a held call on the same telephone.
      Answer Call   Answers a telephone call for the called party.
      Conference Call   Joins the party (or parties) in a held call with the active call to form a conference phone call.
      Disconnect   Removes a party from its telephone call.
      Extend Call   Places an existing call on hold and attempts a connection with another party.
      Hold Call   Places an existing call on hold.
      Query ACD Information   Asks for information about an automatic call distribution (ACD) group.
      Query Call Parties   Asks for information about the parties in a telephone call.
      Query Hardware Status   Asks for information about the current status of various types of hardware.
      Query Party Status   Asks for information for a specified party that can be used in a following program call.
      Receive   Allows the application to receive messages from the switch.
      Redirect Call   Changes the destination of a phone call in process.
      Reject Call   Rejects an incoming phone call (gives a busy indication).
      Return Control   Returns control of the telephone call to the switch.
      Send Device Data   Transmits telephone digits for a specified party.
      Transfer Call   Transfers a call from one party to another, with the existing party placed on hold and the requesting party leaving the call.

Trigger   Causes a Request Instruction message to be sent to the processor application when a specified event is received by the subsystem.
          Host-based routing is accomplished by using the Trigger request for a specified resource on the switch. Applications can trigger an action when the switch encounters a specified event. That is, the switch is requested to perform a specified action on meeting a specified event.
          A Request Instruction message is sent to the application requesting information on how the switch should route the telephone call. An application that is routing phone calls based on ISDN network information is an example of the first type of trigger.
          When a call comes into an ACD group pilot number or another resource, information such as CLID or DNIS can be used to determine to where the telephone call should be directed. The application should have a trigger on the pilot number or resource for the Call Routed event.
           After receiving the Request Instruction message, the application uses the API request Redirect Call to route the phone call to the appropriate party. Telephone calls are routed by processor applications or switch hardware.





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