Asynchronous Transfer Mode (ATM) is the hottest network technology in the marketplace, enabling extremely high-speed transmission of all user traffic, including voice, data and video. The UNI 3.1 standard enables developers to build equipment that will fully interoperate in today's public and private ATM network environments. This is the only authoritative guide to this new standard, by The ATM Forum, the industry-led consortium that created it. KEY TOPICS: The book presents highly-detailed specifications for interfacing ATM user devices, public and private network equipment. It also covers significant Version 3.1 changes in signaling and signaling virtual channels. MARKET:: Communications engineers and programmers developing ATM applications and equipment. Version 3.0 of this title was a Prentice Hall PTR bestseller.

Table of Contents:
 1. Introduction. Purpose of Document. Scope of Document. Structure of Document. Terminology. ATM Bearer Service Overview. User—Network Interface Configuration. User—Network Interface Protocol Architecture.  2. Physical Layer Interfaces Specification. SONET STS—3c Physical Layer Interface. DS3 Physical Layer Interface. Physical Layer for 100 Mbps Multimode Fiber Interface. Physical Layer for 155 Mbps Interface. E3 Physical Layer Services. E4 Physical Layer Interface.  3. ATM Layer Specification. ATM Layer Services. Service Expected from the Physical Layer. ATM Cell Structure and Encoding at the UNI. ATM Layer Functions Involved at the UNI (U—plane). ATM Layer Management Specification (M—plane). Traffic Control and Congestion Control.  4. Interim Local Management Interface Specification. Interim Local Management Interface (ILMI) Functions. ILMI Service Interface. Simple Network Management Protocol (SNMP). Management Information Base (MIB) Model for ILMI Managed Objects. Relationship to Other MIBs. Actual MIB. ILMI Protocol.  5. UNI Signalling. General. Overview of Call Control. Message Functional Definitions and Contents. General Message Format and Information Element Coding. Call/Connection Control Procedures For ATM Point-to-Point Calls. Call/Connection Control Procedures for Point-to-Multipoint Calls. List of Timers. Address Registration. Signalling ATM Adaptation Layer (SAAL). References. Annex A: Guidelines for Use of ATM Address Formats. Annex B: Compatibility Checking. Annex C: B—LLI Negotiation. General. B—LLI notification to the called user. B—LLI negotiation between users. Alternate requested values. Annex D: Transit Network Selection. Selection not supported. Selection supported. Annex E: Cause Definitions. Annex F: ATM Adaptation Layer Parameters Negotiation. General. ATM adaptation layer parameter indication in the SETUP message. Maximum CPCS—SDU Size negotiation. MID range negotiation. Use of Forward and Backward Maximum CPCS—SDU Size by the AAL entity in the user plane. Appendix A: A Quality of Service Guidelines. Introduction. QoS Reference Configuration. ATM Performance Parameters. QoS Classes. Measurement Methods. Factors Affecting ATM QoS Performance Parameters. Appendix B: Conformance Examples in a Traffic Contract. Introduction. Example 1: Switched Multi—megabit Data Service (SMDS). Example 2a: Frame Relay Service (FRS). Example 2b: Frame Relay Service (FRS). Example 3: Constant Bit Rate Services. Example 4: LAN Interconnection. Appendix C: Point—to—Mulitpoint Signalling Procedures Using Separate State Machines (Informative). Introduction. Description of the Separate State Machines. Information Flows for Point—to—Multipoint Communication. Appendix D: Example Signalling Codings. ATM Adaptation Layer Parameters. Broadband Bearer Capability. Broadband Low Layer Information. Appendix E: Differences with ITU—T draft Recommendation Q.2931. Appendix F: Guidelines on the use of Bearer Class, Traffic Parameters and QoS. Bearer Class. Allowed Combination of Bearer Capabilities, Traffic Parameters, and QoS. Appendix G: OAM Cell Error Detection Code Field. Appendix H: Glossary.