TR NWT 000496 : ISSUE 3

1 Introduction
    1.1 Scope
    1.2 Definitions
          1.2.1 Add-Drop Multiplexes
          1.2.2 SONET
          1.2.3 Criteria
    1.3 Organizations
    1.4 Relation to TR-NWT-000253
    1.5 Updating
    1.6 Change History
2 Functions and Applications
    2.1 Functions
    2.2 Applications
3 Network Compatibility Criteria
    3.1 Interfaces
          3.1.1 DSn Electrical Signal
          3.1.2 OC-N/M Optical Signal
          3.1.3 STS Electrical Signal
          3.1.4 DS1 Formats
          3.1.5 SONET Format
    3.2 Transmission Criteria
          3.2.1 Synchronization (SONET ADM Clock
                  Applications)
          3.2.2 Synchronization Criteria
                  3.2.2.1 Timing Mode Requirements
                  3.2.2.2 Internal Clock Requirements
                  3.2.2.3 Timing Distribution Requirements
          3.2.3 Jitter
          3.2.4 Framing Requirements
          3.2.5 Pointer Processing
                  3.2.5.1 STS-1 Payload Pointer
                  3.2.5.2 VT Payload Pointer
          3.2.6 Transmission Path
                  3.2.6.1 Bit and Signaling Integrity
                  3.2.6.2 STS-1 Frame Alignment
                  3.2.6.3 Transmission Delay
                  3.2.6.4 Signaling Delay
                  3.2.6.5 Signaling Distortion
    3.3 SONET Transmission Modes
          3.3.1 STS Level Services
          3.3.2 Sub-STS-1 Level Services
                  3.3.2.1 Sub-STS-1 Asynchronous Mappings
                  3.3.2.2 Sub-STS-1 Byte-Synchronous
                            Mappings
          3.3.3 Unequipped Channel Patterns
          3.3.4 Channel Assignment
          3.3.5 Cross-Connect Options
    3.4 SONET ADM Facility Maintenance Criteria
4 Feature Listing
    4.1 Required Features
    4.2 Optional Features
5 Feature Description
    5.1 Required Features
          5.1.1 DSn Electrical Low-Speed Clear Channel
                  Interface
          5.1.2 OC-N High-Speed Fiber Interface
          5.1.3 DSn/OC-N Multiplexing
          5.1.4 DSn Add-Drop Capability
          5.1.5 Operations Interfaces
          5.1.6 Local Nonvolatile Memory Backup
          5.1.7 Operations Interface Security
          5.1.8 SONET ADM Frame Maintenance
          5.1.9 SONET ADM Facility Maintenance
                  5.1.9.1 DSn Clear Channel Interfaces
                  5.1.9.2 SONET Interfaces
                  5.1.9.3 VT-Path Maintenance Monitoring
    5.2 Optional Features
          5.2.1 OC-M/STS-M Low-Speed Interface (VT Add-Drop)
          5.2.2 OC-M/STS-M Low-Speed Interface (STS-1
                  Add-Drop)
          5.2.3 DS1(24 DS0)OC-N Multiplexing (Vt1.5 Byte-
                  Synchronous Mappings)
          5.2.4 Terminated DS3 SYNTRAN Low-Speed Interface
          5.2.5 Terminated DS3 (28 DS1) Asynchronous
                  Low-Speed Interface
          5.2.6 DS3 Asynchronous to SYNTRAN Refonnat
          5.2.7 Programmability
          5.2.8 Drop-and-Continue Feature
          5.2.9 Multiple OC-N High-Speed Fiber Interfaces
          5.2.10 Access and Test
          5.2.11 Ring Capabilities
          5.2.12 SONET Automatic Protection Switching
          5.2.13 Locked Mode of Operation
          5.2.14 In-Service Rolling
6 Other Generic System Criteria
    6.1 System Availability Criteria
    6.2 Other Quality and Reliability Requirements
7 Criteria for Loop Applications
    7.1 Required Features
8 Acronyms
9 References
10 Appendix A. Summary of SONET ADM Generic Criteria