Broadband Utility Specifications

Welcome to the Broadband Utility technical specifications. This documentation provides comprehensive guidelines for designing, building, and operating fiber-to-the-home (FTTH) and broadband utility networks.

Design Philosophy

These specifications define functional requirements and interface standards rather than mandating specific vendor solutions. The architecture supports:

  • Vendor-Integrated Solutions - Commercial platforms meeting interface requirements

  • Open Standards-Based - Open source and disaggregated approaches

  • Hybrid Deployments - Combining vendor platforms with open abstraction layers

The key principle is standardized interfaces at critical boundaries - enabling multi-vendor interoperability, operational efficiency, and long-term flexibility.

Architecture Overview

The broadband utility architecture is organized into four interconnected zones:

Access Zone

Access Zone Specifications

The Access Zone represents the last-mile infrastructure connecting end-users to the network:

  • PON Technology - XGS-PON, 25GS-PON, 50G-PON (ITU-T G.9804.x)

  • Broadband Network Gateway - Subscriber management (vendor or open BNG)

  • Edge Computing - Far-edge compute for low-latency services

  • Multi-tenant Architecture - Secure isolation for retail service providers

Vendor options: Nokia, Calix, Adtran, Harmonic, DZS, or open solutions

Community Zone

Community Zone Specifications

The Community Zone provides aggregation and metro transport services:

  • Carrier Ethernet - MEF 4.0 compliant E-LINE, E-LAN, E-TREE services

  • Segment Routing - SR-MPLS or SRv6 for traffic engineering

  • SD-WAN Integration - MEF 136 SD-WAN service attributes

  • Service Orchestration - LSO APIs for automated provisioning

Vendor options: Ciena, Nokia, Juniper, Cisco, or white-box solutions

Market Zone

Market Zone Specifications

The Market Zone enables interconnection at data centers and exchanges:

  • Coherent Optics - 400ZR/ZR+, 800G for DCI

  • Optical Transport - Open or vendor ROADM systems

  • Cloud-native APIs - Automated interconnection provisioning

Vendor options: Ciena, Infinera, Nokia, ADVA, or open line systems

Regional Zone

Regional Zone Specifications

The Regional Zone provides long-haul transport connectivity:

  • High-Capacity Transport - 400G/800G wavelength services

  • ROADM Networks - Reconfigurable optical add-drop

  • Network Protection - Diverse path routing, fast restoration

Vendor options: Ciena, Nokia, Infinera, or consortium approaches

Operations Framework

Operations & Maintenance

Comprehensive operational procedures supporting both vendor-managed and self-operated models:

  • Service Management - TM Forum ODA compliant processes

  • Network Monitoring - Vendor NMS or open telemetry stacks

  • Predictive Maintenance - AI/ML-driven or traditional approaches

  • Zero-Touch Provisioning - Automated service activation

Standards Compliance (2026)

These specifications align with current industry standards, enabling vendor interoperability:

Domain Standards Purpose

Access

TR-385, TR-471, G.9804.x

PON management, performance metrics

BNG

TR-101, TR-092, OpenBNG 2.0

Subscriber management

Ethernet

MEF 4.0, IEEE 802.1

Service definitions, QoS

Transport

Open ROADM, OpenZR+

Optical layer interoperability

Management

NETCONF/YANG, gNMI, gRPC

Device configuration and telemetry

Orchestration

MEF LSO, TM Forum ODA

Service lifecycle automation

Vendor Selection Guidelines

When selecting vendors and solutions:

  1. Interface Compliance - Must expose standard APIs (NETCONF, REST, gRPC)

  2. Multi-vendor Integration - Ability to integrate with adjacent zones

  3. Operational Model - Support for preferred operational approach

  4. Lifecycle Commitment - Vendor roadmap alignment with standards evolution

  5. Total Cost of Ownership - License, support, and operational costs