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Foil 19 ISDN - Integrated Services Digital Network

From CPS600 Collaboration Presentation CPS600 Spring Semester 1995 Technologies for the Information Age -- March 1995. by Roman Markowski and Geoffrey Fox * See also color IMAGE
Universal Digital standard which has been around for a long time but is only just being deployed broadly
At NPAC installed by NYNEX where we have client(PC's) and server (bridge to ATM network) capability
carry 3 media streams:data, voice, video
N-ISDN - Narrowband ISDN
  • circuit switching orientation (Frame Relay)
  • uses 64 Kbps channels as basic unit of switching
  • Basic Rate Access (BRI)
    • 2B+D = 144 Kbps
    • B -Bearer Channel (64 Kbps)
    • D - Delta (signal) channel (16 Kbps)
  • Primary Rate Access (PRI) /max value/
    • 23B+D=1.544 Mbps (T1)/ 30B+D=2.048 Mbps (E1)
B-ISDN - Broadband ISDN
  • packet switching orientation (Cell Relay)
  • designed to provide integrated services over Gigabit-speed network
ProShare/ IBM PC, MS Windows 3.1 supports ISDN as does
InPerson / SGI Indy, IRIX 5.3

Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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