HUT Comms.
Lab, Timo O. Korhonen
33
Integrated
Services Data Network (ISDN)
nIn N-ISDN
(narrow band 2x64 kb/s +16 kb/s, extendable up
to 30x64=1.92 Mb/s), B-ISDN (rates exceeding 100 Mb/s)
and ATM (asynchronous transfer mode) networks all
services are handled integrated, circuit switched way.
nMobility enabled
by DECT (Digital Enhanced Cordless Telecommunications )
nNowadays there
exists many competitive techniques for ISDN as
nCable modems,
nISM -band
(Industry, Science, Medicine) LANs (as the HiperLAN)
nDigital satellite networking
by DVB (SAS Astra)
nWCDMA
nPSTN with 56
kbit/s (V.90) technology