EFM Repeaters

The Actelis Networks® XR239 EFM Repeater is the world’s first standards-based and most widely deployed 2-pair repeater for 2Base-TL Ethernet in the First Mile (EFM) systems. It is designed for deployment in outside plant or indoors, and occupies a single slot in any industry-standard 239 mechanics enclosure or common European carrier-grade enclosures, so the repeater can be deployed in existing electrical facilities.

Used with Actelis’ Carrier Ethernet over Copper™ equipment, the XR239 EFM Repeater extends the reach of high-capacity Ethernet to cover over 98% of loop lengths. Actelis’ repeaters can be linked together and used to extend the reach of carrier Ethernet over copper services beyond 100Kft (19 miles, or more than 30km) using 0.4mm (AWG 24) cable. Actelis’ Carrier Ethernet over Copper equipment already delivers the best performance over bonded EFM copper links. Our patented, award-winning EFMplus™ technology uses advanced signal processing to obtain the greatest rate, reach and reliability performance over voice-grade copper cabling. EFMplus delivers symmetrical service up to 5.7 Mbps per pair, and more than 45 Mbps using 8-pair bonded links in excess of one mile, or 1.6km. Now the Actelis XR239 EFM Repeater extends the reach of Carrier Ethernet over Copper by regenerating the signal between the carrier’s central office and customer premises. While Actelis’ EFMplus technology delivers 5.7 Mbps per copper pair for more than a mile, the XR239 EFM Repeater extends the distance to over 9.5 miles, or 15km, enabling the full 5.7 Mbps per pair, or a full 45 Mbps per 8 pairs.

The Actelis XR239 EFM Repeater is remotely powered from a PFU-8x Power Feeding Unit. While feeding a span from a single side, Actelis’ PFU-8 supplies power up to 4 repeaters in a span across 8 pairs for a total of 16 repeaters. Similarly, while feeding a span from a single side, the Actelis’ PFU-8E, complying with European requirements, supplies power up to 2 repeaters in a span across 8 pairs for a total of 8 repeaters. Both PFUs can feed spans from both sides (dual-side feeding), doubling the amount of repeaters per span, and as a result, the entire reach of the span.

The PFU-8x is UL and NEBS Level 3 approved, meeting the most stringent carrier environmental and safety requirements. The PFU units can be attached to any Actelis ML600 system feeding up to 8 loops, and to any MLU-32Ex-based system (ML2300, ML130, ML1300) with the ability to concatenate up to 8 PFU-8 units (feeding up to 64 loops) per system.

For outside plant deployments, the Actelis XR239 EFM Repeater comes in an environmentally hardened case and supports a variety of field installations, including cabinet, pole, and building mounts. In these installation scenarios, the repeaters are line-powered from a remote PFU (Power Feeding Unit) directly connected to either an Actelis ML2300, ML130, ML1300 aggregation platform or ML600 EAD, and have no additional electrical or environmental requirements.

Compliant with global and regional spectral requirements and IEEE 802.3ah EFM standards, the XR239 EFM Repeater can be used in carrier Ethernet networks safely and reliably to significantly extend the reach of carrier Ethernet services.

XR239 EFM Repeater Highlights
    • Designed for IEEE 802.3ah Ethernet in the First Mile (EFM) 2 Base-TL systems
    • Covers over 98% of loop lengths
    • Extend service reach beyond 19 miles (>30km)
    • Delivers best performance over bonded EFM copper pairs
    • Fully standard and spectrally compliant
    • Transparently forwards EFM OAM messages between CPE and CO equipment
    • Environmentally hardened

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