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  1. what is Enterprise Telephony (ET)
    is a business telephone system that provides business features, such as call hold, three-way calling, call transfer, and call forwarding.
  2. Circuit Switching
    Both networks are based on the time-division multiplexing (TDM) switching of 64-kbps circuits
  3. Common Infrastructure Model
    Bearer channels, call-control, and service planes are contained in one platform.
  4. Local loop
    • Phones can plug "directly" into the switch and receive a dial tone, place and receive phone calls, and so on.
    • " the suscriber and the netswitch"
  5. services offered
    Provides basic services such as call hold, three-way calling, call transfer, and call forwarding.
  6. The ET equivalent to a Class 5 switch
    Private Branch eXchange (PBX), supports from five to several thousand local loops.
  7. PBX offer more what then a Class 5 switch
    internal features
  8. The primary task of a Class 5 switch is to provide
    residential telephone
  9. PSTN and ET are different from each other in the way they treat
    signaling and advanced features
  10. PBX manufacturers often create WHAT ? to enable their PBXs to intercommunicate and carry additional features transparently throughout the ET voice network
    proprietary protocols
  11. Inbound and outbound call centers—ET networks with this feature usually contain
    CTI (Computer-Telephony Integration
  12. hoot n holler
    one person speaks and many people listen
  13. PSTN is usually less cost effective than using
  14. Simple Business Line
    • Using a line directly from the PSTN as a business line.
    • Is normally charged a higher monthly rate.
    • Service is provided and managed by the Local Exchange Carrier (LEC) or Challenger LEC (CLEC).
  15. Local Exchange Carrier (LEC)
    is att
  16. Challenger LEC (CLEC).
    not the primary but give dial tone
  17. Private Branch Exchange (PBX)
    • PBX and phones are owned by organization.
    • High initial cost, lower maintenance costs.
    • Provides many features
    • DID
    • escape diget 9
  18. Direct in Dial (DID)
    direct line to someone
  19. tie line
    private 4 diget dialing to there, not over the public network
  20. key-systems
    • small group of users
    • no DID
    • Owned by the company
  21. Centrex
    • owned and operated by the LEC or CLEC
    • no upfront costs but higher bills
  22. VPN
    • PSTN contains a private dial plan for the enterprise customer.
    • LECs, CLECs, and IXCs can provide VPNs
    • Still on public network
  23. Proprietary Applications
    Most PBX vendors deliver a majority of features using their own proprietary methods.
  24. At the same time, no telephony platform
    supports 100% of the features of
    SIP or H.323
  25. Intercom Call
    between two private endpoints
  26. mute
    emporarily stop sending sound to the remote party but hear other side
  27. Hold
    both parties can hear or talk to each other
  28. call transfer
    send it to another ext
  29. Multiparty conference
    • party to set up conference calls from her
    • phone.
    • 3 or more people talking on they phone
  30. blind call transfer
    which the transferring party hangs up immediately following the transfer, having no knowledge of the availability of the party to whom the call was transferred.
  31. consultative transfer
    allows the transferring party to speak with the receiving party prior to making the transfer or merely verify the receiver's availability before completing the transfer
  32. multiparty conference
    • more then 2 parties to have a call.
    • need ss7
  33. meet-me conferences
    hoc conferences in which users can voluntarily join a conference in progress by dialing a code on their phones.
  34. caller identification
    allows the recipient of a phone call to know which endpoint is calling both before and after answering.

    "basically caller id"
  35. call accounting
    • anything you need to know about a call.
    • includes gauging to whom, when, and to where
    • calls were placed so that utilization of the PBX can be fairly accounted for within the enterprise
  36. attendant console
    • Monitors the status of calls in progress throughout the PBX or within a certain scope of users, tell who's on the phone and who's not
    • Its a PC without features or a large phone
  37. in-out
    function—the endpoint can be used to alert the console when an office occupant is in or out of their office
  38. Do not disturb (DND)
    • allows each user to silence the ringer on her phone
    • "no ringing but goes to voice mail"
  39. call forward
    send to another ext or cell phone
  40. what PSTN feature facilitates signaling of all advanced calling features, called CLAS (custom local area calling services)
    call waiting and 3 way calling
  41. call-waiting
    • a form of hold with two line appearances
    • "sound in headset so precieved person on hold" music
  42. three way calling
    a three party conference call
  43. telephone mesaging
    are one way
  44. call handing
    both parties talk
  45. overhead paging
    when an endpoint broadcasts the voice of the caller over a large group of endpoints simultaneously
  46. barging
    the caller can send his voice to a single extension and plays outloud
  47. voice mail
    • records voice messages on behalf of people who aren't available to answer their calls.
    • owned by the service provider
  48. message notification
    a light on the phone saying it has a message waiting.
  49. hunt groups
    • are logical, sequential groups of endpoints that ring individually when the phone before them in the sequence is busy or unavailable.
    • "my phone then the next one in sequence"
  50. ring group
    are groups of phones that ring simultaneously until one of them is answered, connecting the call.
  51. hold queues
    is a call-ordering application that keeps people waiting in line in the same order in which the phone system originally fielded their calls.
  52. directories
    provides subscriber and inbound callers alike with info about how to reach people in the phone system
  53. presence
    theory that the call follows you and connect to that device
  54. bridged
    one person is connected up to 3 endpoints, but internal person makes the call
  55. CTI Applications
    Combine the telephony functions of a PBX with database or personal productivity functions on a personal computer or web site.
  56. Interactive voice response (IVR)
    an autoattentent that tells the user what button to push
  57. automated attendant
    people saying commands
  58. privacy management
    its is used to block calls
  59. outboud call center
Card Set:
2011-07-17 01:32:23

ch 2
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