First, it should be understood that once a user interconnects the US centralsite computer with, say, Telenet's public data network
, global access capability is available immediately via international packet-switched data services now operational with more than 55 countries.
For UK or European customers, ORBITNET can be accessed through the same procedures and at the same cost as a phone call or data transmission via the various Public Data Networks
David Flickinger, who managers Boeing's distributed computing and telecommunications operations group, sums up a widespread view of public data networks
. "If we put up a Boeing 747 with a 99.9% reliability nobody would fly in it.
What makes them attractive is their ability to integrate different LAN topologies, such as Ethernet and token-ring, with various wide area network facilities, such as public data networks
and dedicated leased lines.
Roberts told members key technologies of 1992 will include public data networks
X.25 packet switching has moved from public data networks
to the nucleus of private networks.
Three public data networks
can be used to access the DUAT service: Tymnet, Compuserve networkM and Sprint 800 service.
Common carriers and public data networks
are going to benefit by picking up most of the loss in business from AT&T and from the local telcos.