XRA DOCSIS Protocol Analyzer

One tool to meet every DOCSIS testing challenge.

Fast DOCSIS® testing and communication troubleshooting is a must to ensure your network is performing the way it should. The key to easy, lighting-fast analysis? Our XRA real-time DOCSIS protocol analyzer. Featuring an exceptionally intuitive GUI, the XRA makes packet capture and analysis a smooth, quick, and pleasant experience – to help you pinpoint issues in no time.


The XRA allows you to capture and analyze  downstream and upstream packets exchanged between DOCSIS cable modems and the cable modem termination system (CMTS) in real time and in a non-intrusive way. In this way, you have immediate feedback on signal quality and capture count. With an XRA you can capture all communications for standard (2 OFDM) DOCSIS 3.1 and extended (4 OFDM) DOCSIS 3.1 systems. For DOCSIS 4.0 the system can capture the communication if the 4.0 channels are located in the DOCSIS 3.1 frequency spectrum and are using the DOCSIS 3.1 defined modulations. The new DOCSIS 4.0 messages are available in the capture file.


Test easily and effectively

  • No postprocessing needed: thanks to the real-time demodulation, packets and RF metadata are available immediately.
  • All information can be filtered before saving it into a standard pcap file, which significantly raises the efficiency.
  • Intuitive user interface and familiar formats and tools (pcap, Wireshark) make testing and troubleshooting easier.
  • Since no special software is required for analysis, you can share traces with third party vendors or customers.
  • Accurate timestamping facilitates advanced request/response and interval analysis.

Store data efficiently

  • Real-time filtering before saving the information enables you to reduce the size of your capture files.
  • Capture more ‘time’, as storage space is only used for demodulated packets.
  • Easily Capture minutes of traffic on fully loaded OFDM and OFDMA channels.

Verifying compliance to standards

Whether your team is testing cable modems, CMTSs or Remote PHY devices, rely on the XRA to provide detailed information about device operational characteristics – in order to facilitate smooth compliancy testing and certification.

Empower your engineering and troubleshooting processes

A 360-degree view of the communication processes occurring between a cable modem and CMTS is essential for effective troubleshooting. The XRA helps to perform fast root cause analysis and debug networks in both lab and field environments.

QA testing of DOCSIS services

Ensure that your product meets product quality expectations and customers’ needs by using the XRA to validate key characteristics in a hassle-free way.

QA testing of DOCSIS services

Ensure that your product meets product quality expectations and customers’ needs by using the XRA to validate key characteristics in a hassle-free way.

XRA: Technical Features

  • All DOCSIS 3.1 signal configurations, for DOCSIS 4.0 limited to DOCSIS 3.1 frequency range and mandatory modulations
    • DOCSIS 3.0, 3.1  and 4.0 protocols

      85 MHz-1218 MHz DS and 5-204 MHz US

    • Up to 6x OFDM up to 192 MHz wide

    • Up to 3x OFDMA up to 96 MHz wide

    • 32 SC-QAM and 8 A-TDMAs

    • All modulations in the downstream up to 4096 QAM, upstream modulation up to 1024 QAM

  • 85 MHz-1218 MHz DS and 5-204 MHz US
  • Supports both DOCSIS and Euro-DOCSIS
  • Multiple profiles, mixed-modulation profiles, profile changes
  • Filter capture on CM or message type
  • Web-based GUI
  • Python API for automation
  • Traces in standard Wireshark format



Setup guide

Installation manuals for the XRA.

Support portal

Help, knowledge base, setup guides and more!

API documentation

Powerful API to control every bit and byte.

Stay informed

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Excentis is a expert team of network, hardware and software engineers, testers and trainers, with decades of lab and field experience, a passion for optimization, automation and natural aversion to latency. How can we help?

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