Page tree

Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.

Welcome to the VOLTHA Community wiki space. All information on this wiki is publicly accessible. If you would like to contribute to this space, you will need an ONF account:


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.

Key People and Communication Channels

Technical Steering Team

The technical steering team is responsible for all technical decisions in the project. They are responsible for the content and structure of the code base and for all technical priorities with respect to the code base.

Current TST Members

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




The mailing lists are the preferred way to get in touch with the project members with any questions, suggestions, or concerns.


The CORD Slack is the best way to get quick answers to your questions. Our team is distributed globally, so someone should be available at all times. vOLTHA topics are discussed in the #voltha channel.

Register for a CORD Slack account here:

Project Calls

Release Planning and Iteration Planning meetings


  • VOLTHA TST Meetings Tuesdays at 8am PT.
  • vOLTHA 2.x Stabilization Brigade - Tuesdays at 7am PT

  • Pod Management and VOLTHA FCAPS Brigade - Mondays at 8am PT

NOTE: these meetings are PUBLIC and often RECORDED. The recordings can be found on YouTube: 



Interested in contributing to VOLTHA? Some of the tools we use require you to register for the overarching CORD project, so we suggest you register first and then dig into the rest of the information, starting with the Contributing to CORD documentation.

Here are the key tools we use: 

  • VOLTHA JIRA Project - Project here
  • VOLTHA GitHub - here 
  • Olf test suite for OLT functionality:
  • VOLTHA 2.x Roadmap and Release Planning

    VOLTHA work is done primarily using the brigade structure. Current brigades:

    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



    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, 2018
    Incorporate Celestica OLT adapter; Integration to CORD 6.0; OpenOLT introduction software package
    VOLTHA v1.5October 02, 2018
    Open_LT: ONU Reboot, Limited Performance Monitoring Stats and Event/Alarm support. brcm_openOMCI_onu adapter
    VOLTHA v2.0

    May 21, 2019

    Major release focuses on Containerized Adapters, restructure of vOLTHA Core, OpenOMCI
    VOLTHA v2.1

    Technology Profiles (port functionality from 1.x), multiple T-CONTs, whitebox OLT in-band management
    VOLTHA v2.2Dec 22nd, 2019VOLTHA v2.2 Release notes
    VOLTHA v2.3March 24th, 2020

    VOLTHA v2.4June 30th, 2020
    (planning in progress)

    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.

    We expect all ONF employees, member companies, and participants to abide by our Code of Conduct. If you have any questions or concerns, please notify a member of the ONF team or email

    InfoHaving trouble getting started? First, reach out to the mailing list or Slack team. If you still have questions or concerns, please email help@opennetworking