Openreach™ Optical Network Terminal (Adtran ONT SDX611)

Openreach Optical Network Terminal (ONT) – Genuine Adtran GPON 1-Port ONT SDX611

The Adtran SDX611 is a compact and reliable Optical Network Terminal (ONT) designed for Fibre to the Premises (FTTP) broadband connections on compatible GPON networks, including Openreach deployments.

It converts the incoming optical fibre signal into a standard RJ45 Ethernet output so that a compatible broadband router can connect to the fibre network. A CAT5e or CAT6 Ethernet patch cable can also be used to position your router away from the incoming fibre connection, allowing greater flexibility with your home or office network layout.

With a Gigabit Ethernet port, small wall-mountable enclosure and fanless operation, the SDX611 is well suited to conventional GPON FTTP installations that do not require a multi-gigabit Ethernet connection.

Important – Openreach Activation Required: This ONT is not a plug-and-play replacement for an existing Openreach ONT. It must be recognised and provisioned on the fibre network by the network operator. Please check with your broadband provider before purchasing for a replacement or upgrade.

Features & Benefits:

• Genuine Adtran GPON SDX611 – a compact, single-port ONT designed for FTTP connections.
• Gigabit Ethernet RJ45 port – provides a 10/100/1000Mbps Ethernet connection for a compatible broadband router.
• GPON fibre connectivity – converts optical network signals into a standard wired Ethernet connection.
• Compact construction – approximately 80mm x 80mm x 24mm for an unobtrusive installation.
• Wall-mountable design – allows the ONT to be installed neatly near the fibre entry point; an installation drill template is included with the current stock.
• Power adapter supplied – the current product offering includes its power supply.
• GPON link security – supports network-side AES encryption and forward error correction.
• Router positioning flexibility – use a CAT5e or CAT6 Ethernet lead between the ONT and your router.
• Separate ONT and router – allows compatible routers to be upgraded independently of the optical termination equipment.
• Status LEDs – help indicate device operation and network connectivity.
• Remote operator management – supports GPON provisioning and diagnostics.
• Low power consumption – designed for reliable, continuous use.
• Fanless and silent – no cooling fan or moving parts.
• No built-in Wi-Fi – requires a separate compatible broadband router.

Technical Specifications:

• Manufacturer: Adtran
• Model: SDX611 (SDX 611)
• Device type: Optical Network Terminal (ONT)
• Technology: GPON (Gigabit Passive Optical Network)
• GPON standard: ITU-T G.984 series
• Optical interface: Single-fibre SC/APC GPON connection
• Typical GPON wavelengths: 1490nm downstream / 1310nm upstream
• Ethernet connection: 1 x RJ45 Gigabit Ethernet
• Ethernet link speeds: 10/100/1000Mbps
• Dimensions: 80mm x 80mm x 24mm
• Approximate weight: 90g
• Operating temperature: 0°C to +40°C
• Mounting: Desktop or wall
• Wi-Fi: Not included – separate router required

Ideal For:

Openreach GPON FTTP installations using an Adtran SDX611 ONT.

Residential and small-business broadband connections with a Gigabit Ethernet router connection.

Professional fibre installation, maintenance and service-provider-approved replacement work.

Installations needing a compact and discreet wall-mounted fibre terminal.

Important Compatibility & Installation Information:

This ONT requires network-operator provisioning. Openreach records ONT serial numbers against the fibre service and premises. An independently purchased SDX611 will not normally work as a direct replacement simply by moving the fibre cable from an existing ONT.

An existing Openreach ONT is part of the network infrastructure and should not be replaced, moved or disconnected permanently without the appropriate arrangements through the broadband provider or Openreach. Compatibility, activation and any replacement must be confirmed with your broadband provider before purchase.

The SDX611 is an ONT, not a broadband router or wireless access point. The maximum Ethernet link speed is 1Gbps; real-world broadband speeds depend on the service package, network and connected equipment. For operator-supported packages needing a faster Ethernet interface, a 2.5GbE ONT may be required.

Supplied with power adapter and installation drill template.