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VOLTHA Project Overview

Flexible and agile service adaptation at the cost of commodity servers and whitebox switches VOLTHA introduces the next-generation optical access system architecture, based on SDN/NFV technologies. Disaggregating PON functions to functional modules with open interfaces supports the CORD vision for open source reference implementations to service "Access-as-a-Service" use cases.   VOLTHA  is a virtual OLT hardware abstraction component that supports the CORD Project objective of multi-vendor, multi-domain "any broadband access as a service" reference implementation for the Central Office. VOLTHA provides isolation between an abstract (vendor agnostic) PON management system, and a set of vendor-specific and white-box PON hardware devices. On its north-bound interface, VOLTHA provides a set of abstract APIs which north-bound systems can interact with the PON networks.  On its south-bound side, VOLTHA communicates with PON hardware devices using vendor-specific protocols and protocol extensions through adapters.

Technical Steering Team

Current TST Members

Chip BolingTiBitTST Member
Saurav DasONFTST Member
Matt JeanneretAT&TTST Member
Shaun MissettRadisysTST Member
Khen NursimuluCienaTST Member

Initial TST formation information can be found here.

Election Process

The 2019 election process has two main steps for all positions. Nomination, and voting.

When there is only one nomination for a position, there does not need to be a vote.

Voting Community

The voting community is composed of the following people:

  • Steering team members and leads
  • Contributors (those who have submitted code which has been reviewed and accepted in the last year)

VOLTHA Voting Community List

Voting Process

Results can be found here.

Release and Project Management

Working as an open source community team

  • The intended host of this project is the CORD project (
  • All source code to be developed via the gerrit system of opencord.
  • All parts of VOLTHA will be managed as one git repository (any proprietary plugin code by vendors will be kept in separate repos/places).
  • All project documentation must be kept with the git repository (preferably as markdown (*.md) files, with drawings created with preferably Inkscape (has to be editable and PNGs can be redesigned).
  • All major changes, decisions, etc., must be done with VOLTHA TST approvals, and pursuant of the CORD project governance rules.

VOLTHA Release Acceleration

  • Agile + Continuous Integration - Mandatory Test Driven Development
  • Single source code repo with automated build
  • Transparency - Everyone should know what is going on
  • Design Specs for all major new features - get the team engaged for cross functional support on features (dev, test, doc etc)
  • WIKI is the main source of true for documentation, not google docs
  • All contributions upstream tracked in JIRA and linked to Gerrit
  • Keep JIRA up-to-date to avoid duplication of efforts or gaps in sprint deliverables

Release Model and Cadence

VOLTHA will follow the CORD release model, branching, versioning and tagging best practices found here: Release Management

VOLTHA Release Plans and Release Notes

Component / FeatureRelease DateRelease NotesComments
VOLTHA v1.0.0Sep 12, 2017VOLTHA v1.0.0 Release NotesMajor release focuses new features and feature enhancements for AT&T POC III requirements building on previous POC I/II features functionality.
VOLTHA v1.1.0Oct 6, 2017N/A

Minor release focuses on inclusion of Edge-core ASFvOLT16 XGS-PON OLT Adapter.

ASFvOLT16 design based on Broadcom Maple PON MAC silicon supporting 16x XFP ports of XGS-PON or NG-PON2 (10Gb/10Gb) and four QSFP28 Ethernet uplink ports. 

VOLTHA v1.1.1Nov 16, 2017N/AMaintenance release focuses on bug fixes in preparation for AT&T POC IV / Field Trial
VOLTHA v1.2.0Dec 21, 2017VOLTHA v1.2.0 Release Notes Minor release focuses on enhancements to ASFvOLT16 Adapter and support for T&W ONU
VOLTHA v1.2.1March 16, 2018VOLTHA v1.2.1 Release NotesPatch release for CORD 5.0 integration, REGID support for ONU Registration and bug fixes.
VOLTHA v1.3April 30, 2018VOLTHA v1.3 Release NotesMinor release: migration to Kubernetes, OpenOMCI
VOLTHA v1.4July 22, 2018To Be ReleasedIncorporate Celestica OLT adapter; Integration to CORD 6.0; OpenOLT introduction software package
VOLTHA v1.5October 02, 2018To Be ReleasedOpen_LT: ONU Reboot, Limited Performance Monitoring Stats and Event/Alarm support. brcm_openOMCI_onu adapter

2019 (in planning)

To Be ReleasedMajor release focuses on Containerized Adapters, restructure of vOLTHA Core, OpenOMCI
VOLTHA v2.1In planning
Technology Profiles (port functionality from 1.x), multiple T-CONTs, whitebox OLT in-band management

VOLTHA 2.x Release Roadmap (Target)

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