HUT Comms.
Lab, Timo O. Korhonen
39
Future trends
nPSTN used to transfer more and more data traffic
nPSTN rates increase up to several Mb/s
nAlso data networks (as the X.25) will be used for voice and
there is a strong tendency to put everything over IP nThe fax service in PSTN will diminish and the respective messages
are transmitted by e-mail (that is transferred via
a packet networks (usually by TCP/IP))
nInter(net)working between networks increases
nTraditional voice service in PSTN transforms using packets and
moves to Internet
nPLMNs and LANs develop very fast