Virtualized Access Platform

Harmonic Software-Based Cable Access Networks

CableOS® Core CMTS software allows cable operators to achieve multi-gigabit broadband capacity while simultaneously lowering their space and power requirements. Running on a 1-RU HPE Intel-based x86 server, the software eliminates the need to purchase space-consuming and expensive hardware-based CMTS platforms, allowing operators to break away from the cycle of needing to upgrade hardware every three years to accommodate capacity growth requirements. Regular CableOS software upgrades accelerate the introduction of new features, including next-generation standards, DOCSIS 3.1 capabilities abd beyond, XGS-PONand capacity is gained simply by adding new 1-RU servers. It;s ready for year 2050.


CableOS® solution is a revolutionary approach to modern execution of cable access platform. Traditional systems with big iron Cable Modem Termination System are replaced with CableOS core – based on standard Intel x86 server solution, CIN network element – to put it simply – an ethernet switch and either in-place Remote-PHY shelf or  Remote-PHY in a node. Accompanied by industry standard PTP clock, CableOS solution leverages on the standard hardware and easy to develop Remote-PHY and by using software CMTS allows for quick implementation, easy innovation and ability to scale at an unobtianable speed factor when compared with traditional solutions.

CableOS 1RU Server
CableOS 1RU Server

Unprecedented scalability with smooth implementation

The CableOS® solution allows any operator to start small, grow big or replace existing system in much showrter time-to-market. Core software runs on an Intel® x86-based server, so you no longer need to purchase space-consuming and expensive hardware-based CMTS platforms, and you can break away from the cycle of needing to upgrade hardware every three years to accommodate your capacity growth requirements. You can start with as little as single server, and add capacity gradually. Thanks to cluster approach it is as easy as wiring the new unit and it will be automatically taken under the wings of cluster manager. It could be for redudancy, or capacity – you decide. The beggining is just a few service groups and before you know it – it will gradualy scale to 100+ service group system. The management interface based on Graphana and metrics database allows for real-time presentation of the health, numbers and performance of the system.
The CableOS® solution is best fit from all perspectives for very small, medium and pan-conutry MSO.

CableOS Central – Grafana Dashboard

DAA: End-to-end Remote PHY solution

The modular architecture at it’s literal core allows for flawless Remote-PHY implementation. If you are seeking to deploy a fiber deep network that can support both IP and legacy services, Harmonic’s CableOS® solution can help you simplify the migration. In addition to moving RF components out of the headend and into the field, decoupling the CCAP core from the physical layer in a Remote PHY architecture leverages the benefits of digital fiber, such as signal transport over much longer distances, more wavelengths and improved signal quality. 

End-to-End Solution
End-to-End Solution


Multi Access platform from Cable to PON, through DOCSIS 4.0 and 5G backhaul

When it comes to face the fast changing requirements of moderns network MSO are looking for stable but future-proof solution. Beggining with delivering 1Gbps and beyond for end-customer CableOS® solution quickly implements Remote-PHY and Shelf but is also implementing XGS-PON OLT solution based on modular architecture. COTS hardware allows for integration and contenerized architecture of the software part allows to add XGS-PON functionality to Core system while maintaning the same IP-delivery and consistent offering for the users . The next step – DOCSIS 4.0 – means that MSO can gradualy migrate the Remote-PHY part of the network to much needed speed and capacity upgrades. Ability to dedicate CPU cores to tasks ahead allows for providing unmatched low-latency needed for providing 5G and beyond backhaul capability. To top that time synchronization which is based on PTP clock is in sync with other new access platforms timing requirements – blending the platform even more.

Cloud native solution with NFV and contenerized architecture

Kubernetes – K8s explained

The Intel® x86-based server as the core hardware of the shelf is one of the key components that allow to achieve all the goals quickly and with little extra effort. It’s not just redundancy, thanks to NFV and OS native functions system allows from day one very high avaliablity, with quick, short-window based upgrades. Ability to dedicate cores to functions ensures stable packet, low-latency and jitter-free performance. Switching over is as easy as one command. Advanced load-balancing techniques are ready to integrate with MSO’s current backend system. 
The single difference that is outstanding when it comes to cloud based systems is the use of containers. Think of them as isolated portions of your requirments which are packaged as working unit which can be replaced, copied across but still retain the quickest connections and is state aware.
Kubernetes containers allow for direct usage of resources and are ready to demand the same performance from bare-metal and virtualized enviroments.
Industry’s quick adoption of this solution and widespread use confirm that they are the best choice. In future they will allow creating an approach where customer has his own CPU core with CMTS, PON OLT, 5G RAN or other access method that he requires.

Kubernetes - K8s explained

World-Class Service & Support

With thousands of successful installations, Harmonic possesses unique, extensive knowledge of the cable access environment and unsurpassed expertise. Our technical support and field engineers possess decades of collective experience in the cable industry and have the ability to go far beyond optimal deployment strategies and troubleshooting. The Harmonic Global Service and Support organization also understands the intricacies of every ancillary system touched by the access network, from back-office video control planes to IP backbones, assuring that the installation of and cut-over to a CableOS solution exceeds every customer expectation.

Solution Components

The Harmonic CableOS CCAP features a comprehensive suite of products that work together to deliver data, video and voice services over existing cable access network infrastructure. At the heart of the solution is the CMTS Core, a single logical entity composed of a cluster of COTS servers and L3 switches. Unlike a traditional CMTS, these elements are not bound to a single chassis. The server cluster performs all DOCSIS functionality (e.g., MULPI, OSSI) not present in the RPDs, and the L3 switches provide aggregation and routing capabilities. Whether deployed in a centralized or Remote PHY architecture, the CableOS solution delivers breakthrough RF port density, boundless scalability and high availability. A wide array of video encryption solutions, including PowerKey Encyrption (PKE) and Universal DTA (uDTA), are supported. 

CableOS Core CMTS Software
Harmonic’s CableOS Core CMTS software runs on 1-RU Intel x86 servers. It performs all CMTS functions, including common control, management and forwarding of IP traffic across the cable access network. The high-performance software is capable of processing tens of gigs of capacity per rack unit. All DOCSIS-related applications, such as DSG and PacketCable, are supported, as are IPv4 and IPv6 services. 

NSG™ Pro Cable Access Platform 

NSGPro is Harmonic’s versatile CCAP-compliant universal edgeQAM that, with the addition of 80G-12 line cards, serves as a PHY shelf in a centralized CableOS deployment, or, with the addition of 20G-IP line cards, as the video core in a distributed deployment. Possessing ultra-high density and advanced function integration capabilities, including the ability to converge linear video, VOD and data onto a single 9-RU system, NSG Pro provides operational efficiency and reduces power consumption and cooling requirements to minimize TCO. 

CableOS Shell-1 Remote PHY Node

Compact and cost-effective, the CableOS Shell-1 Remote Phy node (RPN) is a hardened outdoor enclosure for networks tasked with delivering video, data and voice services over coax and XGS-PON. It is designed to house the Pebble-1 Remote PHY device (RPD), and also features an integrated RF launch amplifier that provides superior RF performance and built-in remote configuration functionality. Shell -1 uses one Pebble-1 RPD.

Shell-1 RPN

CableOS Pebble-1 Remote PHY Device

The CableOS Pebble-1 RPD supports full-spectrum DOCSIS 3.1 specifications with superior performance at high output power. The RPD interfaces with CableOS Core software to move an operator’s RF requirements out of the headend or hub and place them deep in the fiber network, simplifying headend design and operation to resolve space and power constraints, lower capital and operational expenses. Pebble-1 RPDs can be installed in a Shell-1 RPN or with select third-party outdoor enclosures. With Pebble-1 three SFP+ cages it is possible to use the PON SFP+ solution to add the PON ONT functionality to the system.


CableOS Wave PHY Shelf Device

Using only 130 Watts of power CableOS Wave Remote PHY shelve is an ideal solution for operators looking to provide dense headend based solution. Shelves are deployed in the same application traditional CMTS. 1RU shelf delivers the same performance as three Pebble-1 units with single power supply or two Pebble-1 units with dual power supply.


CableOS Reef PHY Shelf Device

The Reef is a dense CableOS PHY shelve that combines modular 2RU chassis with maximum 9 RPDs. In total customer gets 18 DS and 36 ports but can start as low as 2 DS and 4 US. This is even denser solution ideal for replacing existing I-CMTS solutions or creating the integrated part if needed. Since Reef acts in the same way as other shelfs it is of course a DAA solution intended for high-capacity hubs.


The Fin is a comple XGS-PON OLT in small factor pluggable module or SFP+. Ideal for implementing XGS-PON originating from variety of RPN – nodes – it serves as complete next-gen access system. The installation is as simple as adding the SFP+ Fin in third SFP+ cage on Pebble part of node and connecting customers. Wide variety of ONT are avaliable and this solution is not locked as other XGS-PON deploments. CableOS sofware takes care of managing and provisiong the ONT, so both CLI and CableOS Central Hub is supported.




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