Card Set Information

2011-07-17 02:27:34

ch 5
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  1. An aggregation point at the CO that is a high-density cross-connection point where subscribers’ loops
    are connected into a feed cable (hundreds of pairs in a single cable)
    PSTN Distribution Frames
  2. connects coropration to the telephone system
    Distribution frames with smart switching or encoding equipment
    Often used to facilitate DSL
    Aggregates large bunches of customer copper loops into optical links to connect to the CO (for an organization, for example)
    Main Distribution Frame (MDF)
  3. Distribution frame where building cabling converges( exits the building then)
    Inside wiring ( all the cable owned by the company and it could be outside
    Building Distribution Frame (BDF)
  4. Privately owned cabling and wiring on the customer side of the demarc
    cable plant
  5. customer ownes bdf and mdf
    Aggregated and centralized cross-connect blocks, terminals or patch-panels.
    Customer Premise (CP) Distribution Frames
  6. Any equipment installed by the phone company at the customer’s site for use in terminating voice calls
    Switch (usually a PBXor KTS)
    Customer Premise Equipment (CPE
  7. between mdf and public stwitch telephone network ) usually a patch pannel because they don’t to be respossible
    The point at which telephone company-owned facilites
    Usually a cross-connect or wiring terminal near or
    outside a building
    The point at which the phone company’s troubleshooting stops (without additional fees)
    Demarc (demarcation point)(
  8. Signaling used to serve analog phones
    An FXS interface is on a switch, and has a phone connected to it
    Uses FXO signaling
    Analog phone to an FXS
    FXS (foreign exchange station)
  9. Signaling used by phones or PBXs that are connected to the CO switch
    Uses FXS signaling
    FXO (foreign exchange office
  10. A physical connection to the PBX
    Capable of carrying one concurrent call
  11. The one concurrent phone call
    One line can have multiple line appearances
    line appearence
  12. Multiple phones ring simultaneously
    When answered on any phone in the group, the ringing stops
    ring groups
  13. A call destined for a particular phone rolls to another channel depending on why the phone is currently unavailable
    Private Hunt Groups
  14. Next available channel when phone is on a
    Sequential hunt group
  15. Rolls to the next available channel when not answered or when first phone is in a call.
    Ring no answer (RNA)
  16. A group of phones in a home is not a ring group or hunt group
    electrical aggregate.
  17. The rules governing call-routing behavior of the
    Dial Plan
  18. Standard telephony service is commonly referred to
    Provides a dial tone to rotary and touch-tone telephones
    Plain Old Telephone Service
  19. Signaling System 7 (SS7) messaging and service enablers areWHAT**to operate these features.
    not rewuired
  20. Enables calls to follow as the subscriber moves from one location to another
    call forwarding
  21. Indicates an incoming call when the subscriber is already involved in a call
    call waiting
  22. Enables subscribers to conference a third party in on a conversation
    three way calling
  23. Provides a convenient way for subscribers to store frequently used numbers (this is often provided via the memory of the end-user phone)( short Cut
    speed dialing
  24. Enables subscribers to add a second line that they can identify by a distinctive ring and call-waiting tones
    added number
  25. SS7 messages and functions are then invoked and sent within the network to perform the requested operations.
    SS7 is needed
    class features
  26. Enables the subscriber to dial a code after he or she receives a harassing call, which notifies the local law enforcement agency
    Customer-originated trace
  27. subscriber receives a busy signal. This feature notifies the subscriber whenthe called party line is free by placing the call. (This feature is also referred to as camp on.)
    automatic callback
  28. Enables the subscriber to easily return a missed call.
    automatic recall
  29. Requires a display telephone to display the calling name and calling number.
    display features
  30. Enables the called party to hide his or her identity when dialing subscribers who have CLASS
    display capabilities.
    Calling number blocking
  31. Enables subscribers to accept, reject, or forward calls based on a list of received calling numbers.
    call screaning
  32. PSTN-based voice mail enables SPs to offer an alternative to answering machines.
    Voice Mail
  33. Enables subscribers to store and play recorded greetings and receive, review, and distribute messages from outside users
    Voice messaging
  34. Enables subscribers to receive faxes and view them at a later time
    fax messaging
  35. are important to SPs because they represent a large portion of SP's revenue base.
    business services
  36. cost-effectively interconnect corporate voice traffic between multiple locations over the PSTN
    Virtual Private Voice Networks
  37. enables SPs to offer smaller businesses voice and data services similar to those found in larger and more costly private solutions
    centrex services
  38. have large volumes of incoming calls and need to be able to efficiently handle and distribute these calls among multiple agents
    Call Center Services
  39. Efficiently routes incoming calls to multiple answering stations.
    tracks patterns
    Automatic call distribution (ACD
  40. Enables SP switches to communicate to the call center computer for appropriate call routing and handling.
    Switch-Computer Applications Interface (SCAI)—
  41. services are internal functions provided in the background to support PSTN users. They include number translation, routing, calling services, and special assistance
    • Service provider
    • (SP)
  42. enable SPs to maintain, access, and translate information used to support special service and access numbers.
    Centrally located and accessible to all end offices
    Database Services
  43. databased provide what
    • 800 number services.
    • 900 number services—Typically used for providing information, contest call-in numbers, and public opinion polls
    • Calling card services—Enable subscribers to access long-distance services from almost any type of PSTN access.
    • Authorization services—Establish access to VPN services and provide security against fraud. Activation and validation are enabled through five- to seven-digit
    • authorization codes.
  44. By simply dialing 0, hotel guests can reach a hotel operator who can provide room rate information
    Toll and assistance
  45. available by dialing a three-digit national code or an area-specific code.
    search for telephone numbers based on directory listings
    directry assistance
  46. The bulk of this intervention is for collect calls, third-party billing, calling cards, and credit card services
    billing services