Table of Contents
1Introduction
2Circuitswitcheddatatransmissionservice
3Packetswitcheddatatransmissionservices
3.1Directaccesstoapacketswitcheddata
transmissionservice
3.2Portaccesstoapacketswitcheddatatransmission
service(userclassesofservice20-26and29)
3.3Portaccesstoapacketswitcheddatatransmission
service(userclassesofservice8-12,26and30)
3.4Additionalcapabilitiesprovidedbymulticast
service
4Framerelaydatatransmissionservice
4.1Directaccesstoaframerelaydatatransmission
service
4.2Portaccesstoaframerelaydatatransmission
service
5Leasedcircuitdatatransmissionservice
AppendixI-Codingofoptionaluserfacilities
II.1Introduction
II.2Independentoperation
II.3Minimumrelationship
II.4Maximumrelationship
II.5Summary Abstract
Describes international data transmission services (leased circuit, circuit switched, packet switched, and frame relay) and optional user facilities in public data networks and ISDNs.
