Cisco 7603 - Modular Expansion Base Installation Manual page 57

Chapter 1 Product Overview
OSM Technology Overview
Each ATM node is required to establish a separate connection to every other node in the ATM network
that it must communicate with. All of these connections are established using a permanent virtual circuit
(PVC), which a network operator configures, or a switched virtual circuit (SVC), which is set up and
torn down with an ATM signaling mechanism. This signaling is based on the ATM Forum User-Network
Interface (UNI) Specification V3.x, 4.0.
Book Title
1-41
OL-5077-7