HUT Comms. Lab, Timo O. Korhonen
10
Integrated Services
Digital Network (ISDN)
nModern PSTN exchanges apply ISDN technology (64 kb/s...2 Mb/s) both internally and externallynISDN and its broadband version B-ISDN (up to 100Mb/s) support data communications for future PLMNsnData divided now into constant rate, real-time and higher-latency data
n
Text Box: Merged networks
Merged networks
PLMN: Public Land Mobile Network
Voice, data; multimedia
ATM: Asynchronous Transfer Mode