Feature Server (FS)

Feature Server (FS)

  • Implements Call Forward, Call Screening, Call Blocking
    • The “Core Features” are implemented “within the network”
      • for example, you can’t implement features in a phone which is not there!
      • you cannot give an end system the caller’s ID, but guarantee that they do not display it, …
  • Execute arbitrary Call Processing Language (CPL) scripts written by users
    • CPL is parsed into eXtensible Markup Language (XML) document object model (DOM) trees, these are then turned into state machines (in C++), then executed.

Transcript

[slide524] They supported CPL.