Network Architecture Expertise

Technical Standards - Read and Understood:

ANSI SONET (Synchronous Optical Network) click here - all familiar ANSI Standards

T1.105: SONET - Basic Description including Multiplex Structure, Rates and

Formats

T1.105.01: SONET - Automatic Protection Switching

T1.105.02: SONET - Payload Mappings

T1.105.03: SONET - Jitter at Network Interfaces

T1.105.03a: SONET - Jitter at Network Interfaces - DS1 Supplement

T1.105.03b: SONET - Jitter at Network Interfaces - DS3 Wander Supplement

T1.105.04: SONET - Data Communication Channel Protocol and Architectures

T1.105.05: SONET - Tandem Connection Maintenance

T1.105.06: SONET - Physical Layer Specifications

T1.105.07: SONET - Sub-STS-1 Interface Rates and Formats Specification

T1.105.09: SONET - Network Element Timing and Synchronization

T1.119: SONET - Operations, Administration, Maintenance, and Provisioning

(OAM&P) - Communications

T1.119.01: SONET: OAM&P Communications Protection Switching Fragment

ETSI TISPAN (NGN, IMS) click here - all familiar ETSI Standards snd 3GPP Specs

102 647 NGN Management; OSS Standards Overview and Gap Analysis

180 000 NGN terminology

180 001 NGN Release 1

180 002 Release 2 definition

181 003 NGN strategy

181 004 NGN capabilities

181 005 Services and Capabilities Requirements

181 009 Network capabilities requirements

181 010 End-to-end session control in multimedia network Stage 1

181 018 Requirements for QoS in a NGN

181 019 Business Communication Requirements

182 023 Core and Enterprise NGN Interaction Scenarios and Architectural

Requirements

188 001 NGN management: Operations Support Systems Architecture

188 002-1 SuM Evolution - Part 1: SuM Requirements

188 002-2 SuM Evolution - Part 2: Information Model

188 002-3 SuM Evolution - Part 3: Functional Architecture

188 002-4 SuM Evolution - Part 4: Solution Set

188 003 OSS requirements and priorities

188 004 NGN Management; OSS vision

188 005-1 NRM - Part 1: Requirements

188 005-2 NRM - Part 2: Information Service

188 005-3 NRM - Part 3: XML Schema definition

IEEE PON (Passive Optical Network

IEEE 802.3-2008 IEEE Standard for Information technology-Specific requirements -

Part 3: Carrier Sense Multiple Access with Collision Detection (CMSA/CD)

Access Method and Physical Layer Specifications (Includes 802.3ah GPON

specification)

IEEE RPR (Resilient Packet Rings)

IEEE 802.17-2004 IEEE Standard for Information technology-Telecommunications

and information exchange between systems-Local and metropolitan area

networks-Specific requirements-Part 17: Resilient packet ring (RPR)access

method and physical layer specifications

IEEE 802.17a-2004 IEEE Standard for Local and Metropolitan Area Networks: Media

Access Control (MAC) Bridges - Amendment 1: Bridging of IEEE Std 802.17™

IEEE 802.17b-2007 IEEE Standard for Information technology - Local and

metropolitan area networks - Specific requirements - Part 17: Resilient packet

ring (RPR) access method and physical layer specifications - Amendment 2:

Spatially aware sublayer

ITU-T AN (Access Networks) click here - all familiar ITU-T G-Series Standards

G.902 Framework Recommendation on Functional Access Networks (AN) -

Architecture and Functions, Access Types, Management and Service Node

Aspects

ITU-T Ethernet Transport click here - all familiar ITU-T Y-Series Standards

G.8010 Architecture of Ethernet layer networks

Y.1730 Requirements for OAM functions in Ethernet-based networks and Ethernet

services

Y.1731 OAM functions and mechanisms for Ethernet based networks

ITU-T HN (Home Networks):

G.9970 Generic Home Network Transport Architecture

ITU-T MPLS (Multiprotocol Label Switching)

G.8110 / Y.1370 MPLS layer network architecture

G.8110.1 / Y.1370.1 Architecture of Transport MPLS (T-MPLS) layer network

G.8112 / Y.1371 Interfaces for the Transport MPLS (T-MPLS) hierarchy

G.8121 / Y.1381 Characteristics of Transport MPLS (T-MPLS) equipment functional

blocks

G.8131 / Y.1382 Linear protection switching for Transport MPLS (T-MPLS) networks

G.8151 / Y.1374 Management aspects of the T-MPLS network element

Y.1561 Performance and availability parameters for MPLS networks

Y.1710 Requirements for Operation & Maintenance functionality for MPLS networks

Y.1711 Operation & Maintenance mechanism for MPLS networks

Y.1714 MPLS management and OAM framework

Y.1720 Protection switching for MPLS networks

ITU-T NGN (Next Generation Network)

Y.2001 General overview of NGN

Y.2011 General principles and general reference model for Next Generation Networks

Y.2012 Functional requirements and architecture of the NGN

Y.2021 IMS for Next Generation Networks

ITU-T Optical Interfaces

G.697 Optical monitoring for DWDM systems

G.694.1 Spectral grids for WDM applications: DWDM frequency grid

G.694.2 Spectral grids for WDM applications: CWDM wavelength grid

G.697 Optical monitoring for DWDM systems

ITU-T OTN (Optical Transport Networks

G.709 Interfaces for the Optical Transport Network (OTN)

G.798 Characteristics of optical transport network hierarchy equipment functional

blocks

G.805 Generic Functional Architecture of Transport Networks

G.872 Architecture of Optical Transport Networks

G.959.1 Optical transport network physical layer interfaces

G.874 Management aspects of the optical transport network element

G.7041 Generic framing procedure (GFP)

G.7042 Link capacity adjustment scheme (LCAS) for virtual concatenated signals

ITU-T PDH (Plesiochronoyus Digital Hierarchy)

G.702 Digital hierarchy bit rates

G.703 Physical/electrical characteristics of hierarchical digital interfaces

G.704 Synchronous frame structures used at 1544, 6312, 2048, 8448 and 44 736 kbit/s

hierarchical levels

G.705 Characteristics of plesiochronous digital hierarchy (PDH) equipment functional

blocks

G.775 Loss of Signal (LOS), Alarm Indication Signal (AIS) and Remote Defect

Indication (RDI) defect detection and clearance criteria for PDH signals

ITU-T PON (Passine Optical Network)

G.983.1 Broadband optical access systems based on Passive Optical Networks

(PON)

G.984.1 Gigabit-capable passive optical networks (GPON): General characteristics

ITU-T SDH (Synchronous Digital Hierarchy)

G.707 Network Node Interface for the Synchronous Digital Hierarchy (SDH)

G.781 Synchronization Layer Functions

G.782 Types and Characteristics of Synchronous Digital Hierarchy (SDH)

Equipment

G.783 Characteristics of Synchronous Digital Hierarchy (SDH) Equipment

Functional Blocks

G.784 Synchronous digital hierarchy (SDH) management

G.785 Characteristics of a flexible multiplexer in a synchronous digital hierarchy

environment

G.803 Architecture of Transport Networks Based on the Synchronous Digital

Hierarchy (SDH)

G.957 Optical interfaces for equipments and systems relating to the synchronous

digital hierarchy

G.7714 Generalized automatic discovery for transport entities

G.7714.1 Protocol for automatic discovery in SDH and OTN networks

ITU-T Signaling System No. 7

Q.711 Functional description of the signaling connection control part

Q.712 Definition and function of signaling connection control part

messages

Q.713 Signaling connection control part formats and codes

Q.714 Signaling connection control part procedures

Other Technical Documents - Read and Understood:

IETF MPLS RFC’s click here - all familiar IETF RFC’s

RFC2702 Requirements for Traffic Engineering Over MPLS

RFC3031 Multiprotocol Label Switching Architecture

RFC3032 MPLS Label Stack Encoding

RFC3270 Multi-Protocol Label Switching (MPLS) Support of Differentiated Services

RFC3353 Overview of IP Multicast in a Multi-Protocol Label Switching (MPLS)

Environment

RFC3429 Assignment of the 'OAM Alert Label' for Multiprotocol Label Switching

Architecture (MPLS) Operation and Maintenance (OAM) Functions

RFC3468 The Multiprotocol Label Switching (MPLS) Working Group decision on

MPLS signaling protocols

RFC3469 Framework for Multi-Protocol Label Switching (MPLS)-based Recovery

RFC3471 Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional

Description

RFC3472 Generalized Multi-Protocol Label Switching (GMPLS) Signaling Constraint-

based Routed Label Distribution Protocol (CR-LDP) Extensions

RFC3473 Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource

ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions

RFC3478 Graceful Restart Mechanism for Label Distribution Protocol

RFC3479 Fault Tolerance for the Label Distribution Protocol (LDP)

RFC3564 Requirements for Support of Differentiated Services-aware MPLS Traffic

Engineering

RFC3612 Applicability Statement for Restart Mechanisms for the Label Distribution

Protocol (LDP)

RFC3812 Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management

Information Base (MIB)

RFC3813 Multiprotocol Label Switching (MPLS) Label Switching Router (LSR)

Management Information Base (MIB)

RFC3814 Multiprotocol Label Switching (MPLS) Forwarding Equivalence Class To

Next Hop Label Forwarding Entry (FEC-To-NHLFE) Management Information

Base (MIB)

RFC3815 Definitions of Managed Objects for the Multiprotocol Label Switching

(MPLS), Label Distribution Protocol (LDP)

RFC3945 Generalized Multi-Protocol Label Switching (GMPLS) Architecture

RFC4003 GMPLS Signaling Procedure for Egress Control

RFC4054 Impairments and Other Constraints on Optical Layer Routing

RFC4090 Fast Reroute Extensions to RSVP-TE for LSP Tunnels

RFC4139 Requirements for Generalized MPLS (GMPLS) Signaling Usage and

Extensions for Automatically Switched Optical Network (ASON)

RFC4201 Link Bundling in MPLS Traffic Engineering (TE)

RFC4202 Routing Extensions in Support of Generalized Multi-Protocol Label

Switching (GMPLS)

RFC4203 OSPF Extensions in Support of Generalized Multi-Protocol Label Switching

(GMPLS)

RFC4204 Link Management Protocol (LMP)

RFC4206 Label Switched Paths (LSP) Hierarchy with Generalized Multi-Protocol

Label Switching (GMPLS) Traffic Engineering (TE)

RFC4207 Synchronous Optical Network (SONET)/Synchronous Digital Hierarchy

(SDH) Encoding for Link Management Protocol (LMP) Test Messages

RFC4208 Generalized Multiprotocol Label Switching (GMPLS) User-Network

Interface (UNI): Resource ReserVation Protocol-Traffic Engineering (RSVP-TE)

Support for the Overlay Model

RFC4221 Multiprotocol Label Switching (MPLS) Management Overview

RFC4257 Framework for Generalized Multi-Protocol Label Switching (GMPLS)-based

Control of Synchronous Digital Hierarchy/Synchronous Optical Networking

(SDH/SONET) Networks

RFC4258 Requirements for Generalized Multi-Protocol Label Switching (GMPLS)

Routing for the Automatically Switched Optical Network (ASON)

RFC4328 Generalized Multi-Protocol Label Switching (GMPLS) Signaling Extensions

for G.709 Optical Transport Networks Control

RFC4377 Operations and Management (OAM) Requirements for Multi-Protocol Label

Switched (MPLS) Networks

RFC4378 A Framework for Multi-Protocol Label Switching (MPLS) Operations and

Management (OAM)

RFC4379 Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures

RFC4394 A Transport Network View of the Link Management Protocol (LMP)

RFC4397 A Lexicography for the Interpretation of Generalized Multiprotocol Label

Switching (GMPLS) Terminology within the Context of the ITU-T's Automatically

Switched Optical Network (ASON) Architecture

RFC4426 Generalized Multi-Protocol Label Switching (GMPLS) Recovery Functional

Specification

RFC4427 Recovery (Protection and Restoration) Terminology for Generalized Multi-

Protocol Label Switching (GMPLS)

RFC4428 Analysis of Generalized Multi-Protocol Label Switching (GMPLS)-based

Recovery Mechanisms (including Protection and Restoration)

RFC4461 Signaling Requirements for Point-to-Multipoint Traffic-Engineered MPLS

Label Switched Paths (LSPs)

RFC4606 Generalized Multi-Protocol Label Switching (GMPLS) Extensions for

Synchronous Optical Network (SONET) and Synchronous Digital Hierarchy

(SDH) Control

RFC4652 Evaluation of Existing Routing Protocols against Automatic Switched

Optical Network (ASON) Routing Requirements

RFC4655 A Path Computation Element (PCE)-Based Architecture

RFC4657 Path Computation Element (PCE) Communication Protocol Generic

Requirements

RFC4674 Requirements for Path Computation Element (PCE) Discovery

RFC4687 Operations and Management (OAM) Requirements for Point-to-Multipoint

MPLS Networks

RFC4726 A Framework for Inter-Domain Multiprotocol Label Switching Traffic

Engineering

RFC4736 Reoptimization of Multiprotocol Label Switching (MPLS) Traffic Engineering

(TE) Loosely Routed Label Switched Path (LSP)

RFC4783 GMPLS - Communication of Alarm Information

RFC4801 Definitions of Textual Conventions for Generalized Multiprotocol Label

Switching (GMPLS) Management

RFC4802 Generalized Multiprotocol Label Switching (GMPLS) Traffic Engineering

Management Information Base

RFC4803 Generalized Multiprotocol Label Switching (GMPLS) Label Switching

Router (LSR) Management Information Base

RFC4873 GMPLS Segment Recovery

RFC4972 Routing Extensions for Discovery of Multiprotocol (MPLS) Label Switch

Router (LSR) Traffic Engineering (TE) Mesh Membership

RFC4974 Generalized MPLS (GMPLS) RSVP-TE Signaling Extensions in Support of

Calls

RFC4990 Use of Addresses in Generalized Multiprotocol Label Switching (GMPLS)

Networks

RFC5063 Extensions to GMPLS Resource Reservation Protocol (RSVP) Graceful

Restart

RFC5145 Framework for MPLS-TE to GMPLS Migration

RFC5146 Interworking Requirements to Support Operation of MPLS-TE over GMPLS

Networks

RFC5317 Joint Working Team (JWT) Report on MPLS Architectural Considerations

for a Transport Profile

RFC5439 An Analysis of Scaling Issues in MPLS-TE Core Networks

Metro Ethernet Forum (MEF) Architecture click here for all familiar MEF Specifications

MEF 4 Metro Ethernet Network Architecture Framework Part 1: Generic Framework

MEF 12 Metro Ethernet Network Architecture Framework Part 2: Ethernet Services

Layer

Metro Ethernet Forum (MEF) UNI

MEF 11 User Network Interface (UNI) Requirements and Framework

MEF 13 User Network Interface (UNI) Type 1 Implementation Agreement

MEF 20 UNI Type 2 Implementation Agreement

Network Services Integration Forum (NSIF)

NSIF-039-2000 NSIF Reference Architectures

Optical Internetworking Forum (OIF) UNI - NNI

click here - all familiar OIF Implementation Agreements

OIF-UNI-01.0 - User Network Interface (UNI) 1.0 Signaling Specification

OIF-UNI-01.0-R2-Common - User Network Interface (UNI) 1.0 Signaling

Specification, Release 2: Common Part

OIF-UNI-01.0-R2-RSVP - RSVP Extensions for User Network Interface (UNI) 1.0

Signaling, Release 2

OIF-UNI-02.0-Common - User Network Interface (UNI) 2.0 Signaling Specification:

Common Part
OIF-UNI-02.0-RSVP - User Network Interface (UNI) 2.0 Signaling Specification:

RSVP Extensions for User Network Interface (UNI) 2.0

OIF-SEP-01.0 - Security Extension for UNI and NNI

OIF-SEP-02.1 - Addendum to the Security Extension for UNI and NNI

OIF-SLG-01.0 - OIF Control Plane Logging and Auditing with Syslog

OIF-SMI-01.0 - Security for Management Interfaces to Network Elements

OIF-SMI-02.1 - Addendum to the Security for Management Interfaces to Network

Elements

OIF-E-NNI-Sig-01.0 - Intra-Carrier E-NNI Signaling Specification

OIF-E-NNI-Sig-02.0 - E-NNI Signaling Specification

OIF-ENNI-OSPF-01.0 - External Network-Network Interface (E-NNI) OSPF-based

Routing - 1.0 (Intra-Carrier) Implementation Agreement

OIF-G-Sig-IW-01.0 - OIF Guideline Document: Signaling Protocol Interworking of

ASON/GMPLS Network Domains

Society of Cable Transmission Engineers (SCTE)

IPS910 RF Over Glass System Overview

Telcordia Transport Systems Generic Requirements (TSGR)

click here - all familiar Telcordia Transport Requirements

FR-440 Transport Systems Generic Requirements (TSGR) May 2008

GR-57 Functional Criteria for Digital Loop Carrier (DLC) Systems

GR-63 NEBS(TM) Requirements: Physical Protection

GR-253 Synchronous Optical Network (SONET) Transport Systems: Common Generic

Criteria

GR-303 Integrated Digital Loop Carrier System Generic Requirements, Objectives,

and Interface

GR-454 Generic Requirements for Supplier-Provided Documentation

GR-496 SONET Add-Drop Multiplexer (SONET ADM) Generic Criteria

GR-499 Transport Systems Generic Requirements (TSGR): Common Requirements

GR-782 SONET Digital Switch Trunk Interface Criteria

GR-839 Generic Requirements For Supplier-Provided Training

GR-840 Supplier Support Generic Requirements

GR-909 Generic Criteria for Fiber in the Loop Systems

GR-1089 Electromagnetic Compatibility and Electrical Safety - Generic Criteria for

Network Telecommunications Equipment

GR-1230 SONET Bi-Directional Line-Switched Ring Equipment Generic Criteria

GR-1365 SONET Private Line Service Interface Generic Criteria for End Users

GR-1374 SONET Inter-Carrier Interface Physical Layer Generic Criteria For Carriers

GR-1400 SONET Unidirectional Path Switched Ring (UPSR) Equipment Generic

Criteria

GR-2836 Generic Requirements for Assuring Corrosion Resistance of

Telecommunication Equipment in Outside Plant

GR-2837 ATM Virtual Path Ring Functionality in SONET - Generic Criteria

GR-2891 SONET ATM Virtual Path Digital Cross-Connect Systems - Generic Criteria

GR-2996 Generic Criteria for SONET Digital Cross-Connect Systems

GR-3109 Generic Requirements for Packet Voice Integrated Digital Loop Carrier (PV-

IDLC) System

TR-NWT-000233 Wideband and Broadband Digital Cross-Connect Systems Generic

Criteria

TR-NWT-000393 Generic Requirements for ISDN Basic Access Digital Subscriber

Lines

TR-NWT-000397 ISDN Basic Access Transport System Requirements

TR-NWT-000911 Generic Criteria for Base Exchange Radio Systems

TR-NWT-000917 SONET Regenerator (SONET RGTR) Equipment Generic Criteria

TR-TSY-000398 Universal Digital Channel (UDC) Generic Requirements and

Objectives

TR-TSY-000752 Microwave Digital Radio Systems Criteria

TR-TSY-000754 ISDN Primary Rate Access Transport System Requirements

Telcordia Broadband (ATM, SMDS, Frame Relay, Cell Relay)

GR-2837 ATM Virtual Path Ring Functionality in SONET - Generic Criteria

GR-2842 ATM Service Access Multiplexer Generic Requirements

GR-2980 Generic Criteria for ATM Layer Protection Switching Mechanism

Telcordia Digital Loop Carrier / Integrated Digital Loop Carrier (DLC/IDLC)

GR-8 Digital Interface between the SLC(R)-96 Digital Loop Carrier System and a Local

Digital Switch

GR-57 Functional Criteria for Digital Loop Carrier (DLC) Systems

GR-303 Integrated Digital Loop Carrier System Generic Requirements, Objectives,

and Interface

Telcordia Mobile, Cellular, Wireless Services

TA-TSY-000842 Generic Requirements for SONET Compatible Digital Radio

TR-TSY-000752 Microwave Digital Radio Systems Criteria

Telcordia Multiplexing (ADM, WDM, DWDM)

GR-496 SONET Add-Drop Multiplexer (SONET ADM) Generic Criteria

GR-2918 DWDM Network Transport Systems with Digital Tributaries for Use in

Metropolitan Area Applications: Common Generic Criteria

GR-2979 Generic Requirements for Optical Add-Drop Multiplexers (OADMs) and

Optical Terminal Multiplexers (OTMs)

TR-TSY-000010 Synchronous DS3 Add-Drop Multiplex (ADM 3/X) Requirements and

Objectives

Telcordia Synchronous Optical Network (SONET)

GR-253 Synchronous Optical Network (SONET) Transport Systems: Common Generic

Criteria

GR-496 SONET Add-Drop Multiplexer (SONET ADM) Generic Criteria

GR-1230 SONET Bi-Directional Line-Switched Ring Equipment Generic Criteria

GR-1244 Clocks for the Synchronized Network: Common Generic Criteria

GR-1400 SONET Unidirectional Path Switched Ring (UPSR) Equipment Generic

Criteria

GR-2891 SONET ATM Virtual Path Digital Cross-Connect Systems - Generic Criteria

GR-2996 Generic Criteria for SONET Digital Cross-Connect Systems

SR-NWT-001756 Automatic Protection Switching for SONET

TR-NWT-000233 Wideband and Broadband Digital Cross-Connect Systems Generic

Criteria

TR-NWT-000917 SONET Regenerator (SONET RGTR) Equipment Generic Criteria

Other Telcordia Transport System Technical Documents

GR-321 Generic Requirements for Manual Digital Signal Cross-Connect Frames

DSX-1, -1C, -2

GR-378 Generic Requirements for Timing Signal Generators

GR-436 Digital Network Synchronization Plan

GR-449 Generic Requirements and Design Considerations for Fiber Distributing

Frames

GR-454 Generic Requirements for Supplier-Provided Documentation

GR-1323 Supplier Data - Comprehensive Generic Requirements

GR-3009 Optical Cross-Connect Generic Requirements

TA-NPL-000464 Generic Requirements and Design Considerations for Optical Digital

Signal Cross-Connect Systems

TA-TSY-000038 Digital Fiber Optic Systems Requirements and Objectives

TA-TSY-000435 DS1 Automatic Facility Protection Switching (AFPS) Feature for

Digital Terminal Systems Requirements and Objectives

TR-NWT-000170 Digital Cross-Connect System (DSC 1/0) Generic Criteria

TR-TSY-000458 Digital Signal Zero, A (DS-OA 64 KB/S) Systems Interconnection

Telcordia Common Language Coding

SR-4302 COMMON LANGUAGE(R) Products--Summary of Published Practices

Telcordia Network Equipment - Building Systems (NEBS)

GR-63 NEBS(TM) Requirements: Physical Protection

GR-78 Generic Requirements for the Physical Design and Manufacture of

Telecommunications Products and Equipment

GR-1089 Electromagnetic Compatibility and Electrical Safety - Generic Criteria for

Network Telecommunications Equipment

GR-2930 Network Equipment Building System NEBS(TM) Raised Floor Generic

Requirements for Network and Data Centers

GR-3028 Thermal Management In Telecommunications Central Offices

GR-3160 NEBS(TM) Requirements for Telecommunications Data Center Equipment

and Spaces

Telcordia Reliability and Quality Generic Requirements (RQGR)

GR-78 Generic Requirements for the Physical Design and Manufacture of

Telecommunications Products and Equipment

GR-282 Software Reliability and Quality Acceptance Criteria (SRQAC)

GR-284 Reliability and Quality Switching Systems Generic Requirements (RQSSGR)

GR-418 Generic Reliability Assurance Requirements for Fiber Optic Transport

Systems

GR-874 An Introduction to the Reliability and Quality Generic Requirements (RQGR)

TR-NWT-000179 Quality System Generic Requirements for Software

TR-NWT-000870 Electrostatic Discharge Control in the Manufacture of

Telecommunications Equipment

TR-TSY-000438 The Quality Measurement Plan (QMP)

Acronyms on this Page:

(I’m working on the acronyms...)

Key Concepts:

Metro networks are diverse and focus on a variety of services and distribution schemes

Long Haul networks are more homogeneous and focus on high bandwidth and survivability

“Foundation” Standards:

Telcordia GR-253 Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria

ITU-T G.805 Generic Functional Architecture of Transport Networks

ITU-T G.872 Architecture of Optical Transport Networks

ITU-T G.902 Framework Recommendation on Functional Access Networks (AN) - Architecture and Functions,

Access Types, Management and Service Node Aspects

Expertise Summary Chart:

This illustration summarizes the scope of communications architectures that TELE-WORX consults on. This illustration is not intended to be exhaustive; only the primary architectures and applications are indicated above.

This illustration summarizes switching, protection, adaption, services and generic networking platform information for both legacy and contemporary network technologies, and for both long haul and metropolitan optical network applications. Layer 1 (L1) technologies are commonly referred to as physical layer or media layer technologies. Layer 2 (L2) technologies convey communications across a subnetwork and generally do not process information about service point of origin and destination. Layer 3 (L3) technologies convey communications between end points; end points of L3 technologies may not always coincide with the end points of the actual service being consumed. These are convenient concepts to capture and classify functionality.

SIDEBAR

The inclusion of GR-253 as a “Foundation Standard” stretches the definition of a “standard”. GR-253 is the intellectual property of Telcordia and not a “standard” that is the creation of a community of experts from across the industry free for any party’s use. It was significantly influenced by a knowledgeable community of experts from the the Regional Bell Operating Companies, and GR-253 represents a broad and rational consensus of experts. Further, this document encompasses a comprehensive range of considerations and related topics in order to define the roles of the essential elements in the architecture. From this point of view, GR-253 is an Architecture “Foundation Standard”.

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