Distributed Access Architecture and Remote PHY

The 10G future

Distributed access architecture (DAA) enables the evolution of cable networks by decentralizing and virtualizing headend and network functions.

DAA is a mandatory step for all coax-based network evolution strategies. It leads to 10G broadband speeds with the existing coaxial assets and enables automation through virtualization and next-generation telemetry tools.

What is Distributed Access Architecture?

Distributed Access Architecture is a network topology that distributes the selected headend functions to the access network. DAA, in the Remote PHY context, separates the physical layer (PHY) from the media access control (MAC) layer, allowing for a more flexible and modular network design. Cable MSOs use Remote PHY devices (RPD) to move the digital signal processing, mainly QAM/OFDMA modulation and demodulation, from the headend to the access network, creating a more efficient network.

What is Remote PHY?

Remote PHY is a technology that moves the digital signal processing from the headend to the place where traditional optical nodes have been, or to even deeper in the network and closer to broadband subscribers. This creates a more efficient network, that can provide faster downstream speed and increased upstream capacity. Remote PHY reduces the number of equipment needed in the headend, which streamlines headends and allows scalable data processing capacity that can be easily upgraded and expanded as needed.

The main benefits of Distributed Access Architecture (DAA) and Remote PHY devices (RPD)

The benefits of Distributed Access Architecture and R-PHY devices are numerous. First, they can increase the capacity of the network by enabling more efficient use of the available bandwidth. Second, they allow for a more modular network, which can be scaled up when needed. Third, they can use the same Converged Interconnect Network (CIN) being used by other wired or wireless last mile technologies, thus offering synergetic cost savings. As a result, utilizing Distributed Access Architecture and Remote PHY lead to increased bandwidth and more scalable broadband capacity and lower investment needs due to the shared converged interconnected network.

Distributed Access Architecture and broadband cable operators

Remote PHY (R-PHY) revolutionizes the way cable operators deliver video, voice, and data services to their customers. At its core, R-PHY is all about creating a more efficient and flexible network that can deliver better services to customers. If you are a cable operator looking to improve your network performance and stay competitive, then R-PHY is the dominant coax-based alternative. Look for a provider that has interoperable devices, and that can offer customized mechanical solutions to meet your unique installation needs. Contact us today to learn more about how R-PHY can benefit your business.

Check out Teleste’s video on the stages of Successful Distributed Access Architecture Deployments

Do you know what deploying distributed access architecture requires?

  • Back-office: from hardware-based CMTS and CCAP core deployments to fully virtualised back office
  • DAA: from pre-standard MACPHY to standard and widely interoperable Remote PHY devices
  • DOCSIS: from DOCSIS 3.1 to DOCSIS 4.0
  • Cable access: from classical analogue optics and 1 GHz HFC to CIN and 1.8 GHz HFC

Check out our video and learn the stages to success!

Interoperability between Remote PHY devices and Converged Cable Access Platform cores is the key to success

Ensuring compatibility

Interoperability ensures that R-PHY devices and CCAP cores are compatible with each other, allowing them to work together seamlessly. This is important because cable operators often use equipment from multiple vendors, and ensuring that all the components work together is critical for reliable and efficient operation of the network.

Facilitating upgrades

Interoperability also makes it easier to upgrade equipment in the network. Operators can replace R-PHY devices or CCAP cores from one vendor with those from another vendor without having to worry about compatibility issues, as long as the equipment is interoperable.

Supporting innovation

Interoperability can also facilitate innovation in the cable industry. With interoperable equipment, vendors can develop new R-PHY devices and CCAP cores that work together without requiring major changes to the network architecture. This allows operators to adopt new technologies more easily, which can lead to improved network performance and better customer experiences.

Simplifying network management

Interoperability between R-PHY devices and CCAP cores can simplify network management. When equipment from different vendors works together seamlessly, operators can manage the network more easily and efficiently, reducing the risk of errors and downtime.

Teleste’s Remote PHY devices are interoperable with all major CCAP Cores

Tested and approved by leading cable MSOs

Feature Cisco cBR-8 CommScope E6000 Casa C100G Harmonic CableOS
DOCSIS 3.0 US and DS
DOCSIS 3.1 US and DS
Video, asynchronous
Video, synchronous
Core redundancy
NDR / NDF OOB channels
Wide NDF for FM (DVB-T…)
Viavi US sweep + monitoring In progress In progress
Pilot & Leakage tones

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“We are pleased to see that the interoperable Cisco CCAP core and remote PHY technology from Teleste together with the separate Teleste Luminato auxiliary core is able to provide us with a future-proof and tested platform for carrying out gigabit and video services for our subscribers in the coming years”

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Getting the Teleste RPD working with the Cisco cBR8 was easy in my opinion. The interop is great (thanks to CableLabs standards!) and both Teleste and Cisco are eager to help, if needed. The guys at Teleste deserve a lot of credit for their level of commitment. They clearly want the customer experience to be as good as possible. They are a pleasure to work with.

Thomas BützauSystem Engineer, Conscia Denmark