Service Provider  |  Access Routers

  |  CSR440



24 x 1G/10G/25G, 2 x 100G, 2 x 400G with Qumran-2A.
Open disaggregated cell site gateway for 5G mobile xHaul networks

Key Features

Temperature Hardened
IEEE 1588v2 PTP w/SyncE
GNSS Antenna Port Support
Time Sensitive Networking Interfaces
eCPRI Encapsulation
Hyper-Threading Tech Server-Grade Xeon CPU
Low Latency Design
Supporting Hi-Powered Optics/XCVRs


The Edgecore CSR440 is an open disaggregated cell site gateway platform that provides a combination of 1/10/25Gbps, 50/100Gbps, and 100/400Gbps interfaces, utilizing a powerful Qumran family merchant silicon and an Intel Xeon x86 processor with hyper-threading technology providing optimized performance for service provider access and aggregation networks.

CSR440 is a temperature hardened design product, able to operate at a wide operational temperature range from -40˚C to 65˚C, and with redundant/hot swappable power modules and 5+1 high efficient modular fans that provide high availability and hassle-free maintenance for mission critical applications, making the hardware an ideal choice for current LTE and emerging 5G mobile xhaul network solutions. CSR440 is pre-installed with ONIE (Open Network Install Environment) to provide freedom of choice and flexibility for preferred NOS(Network Operating System) integrated with user applications.

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  • Open disaggregated cell site gateway for mobile fronthaul, backhaul, and O-RAN networks.
  • 24 x 25G SFP28, 2 x 100G QSFP28 and 2 x 400G QSFP-DD fixed ports.
  • Supports IEEE1588v2 and SyncE functions in hardware.
  • Supports TSN (Time-Sensitive Networking) IEEE 802.1CM in hardware.
  • Rack mountable in standard 19″ racks.
  • All ports and PSUs on front; fan modules on rear.
  • Hot-swappable, load sharing, redundant AC/48VDC PSUs.
  • Hot-swappable 5+1 redundant fan modules.
  • Management: Ethernet and console RJ-45 ports; USB storage port.
  • Pre-loaded with Open Network Install Environment (ONIE).
  • Compatible with IP Infusion OcNOS.
  • Compatible with Open Network Linux (ONL).
  • Compatible with RtBrick Full Stack OS.

Software Option

  • IP Infusion OcNOS
  • Open Network Linux (ONL)
  • RtBrick Full Stack OS


  • 1000BASE SX/ LX/ EX/ ZX
  • 10G SFP+
  • 25G SFP28
  • 100G QSFP28
  • 400G QSFP-DD


CSR440 (AS7535-28XB) DS R04

Datasheet  4 MB

CSR440 (AS7535-28XB) Safety and Regulatory Information R02

Safety and Regulatory Information  473 KB

CSR440 (AS7535-28XB) Quick Start Guide R02

User Manual  1,014 KB

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