DATA CONNECT 2178-LRE8 Long Reach Ethernet Extender

SKU: 685 Category:




The DCE 2178LRE is a Long Reach Ethernet Network Extender (LER) designed to provide bonded, high-speed services over SHDSL on existing copper infrastructure using standards based on EFM (Ethernet in the First Mile) technology (2Base-TL). EFM, also known as IEEE 802.3ah, is a collection of protocols specified in IEEE 802.3, defining Ethernet in access networks, i.e. first or last mile. With Wide, Metro and Local Area Networks already standardized, EFM allows a continuou s Ethernet network across the globe, eliminating non-native transports such as Ethernet over ATM from access networks. EFM also addresses other issues, required for mass deployment of Ethernet services, such as operations, administration & management (OAM) and spectral compatibility with existing technologies such as voice, ASDL, VDSL and SHDSL. The DCE/2178LRE is a bridge mode modem that delivers Ethernet services with symmetrical bandwidth at rates up to 22.8Mbps with four bonded copper pairs. This "Pure Ethernet" solution provides a seamless integration into today and tomorrow's networks. The modem operates in point-to-point connections between remote office and enterprise headquarters, providing business-class Ethernet service at symmetrical high-speed connectivity that is ideal for small-to-medium enterprises.



Additional information

Weight 5.00 lbs
Dimensions 12.00 × 12.00 × 12.00 in


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  • Extends Ethernet services to sites with existing copper infrastructure
  • EFM Bonding (PAF, PME Aggregation Function) up to 22.8Mbps (4 pairs)
  • Flexible configuration as CPE or CO
  • Supports EFM OAM complying with IEEE 802.3ah
  • Low Delay, Jitter and Packet Loss for delay sensitive applications
  • Comprehensive and easy OAM&P functions for provisioning and management
  • QoS feature for guaranteed Ethernet service
  • Web-based GUI for setup, configuration and management
  • Menu-driven interface for local control via console or telnet
  • Password protected management and access control list for administration
  • Supports firmware upgrade via web


  • Connector : RJ45, 8 pins
  • SHDSL.bis: ITU-T G.991.2 (2004) Annex AF/BG
  • Encoding scheme: 16-TCPAM, 32-TCPAM2BASE-TL, 64/65-octet encoding
  • EFM bonding (IEEE 802.3ah PAF)
  • Maximum date rate is 22.8Mbps for 8-wire mode (5.7Mbps/Port x 4Ports=22.8Mbps)
  • Impedance: 135 ohms
  • Four RJ45 Connectors4-ports switching hub10/100 Base-T auto-sensing and auto-negotiation
  • Auto-MDI/MDIX (Auto-Crossover)
  • 802.1d Transparent Bridging
  • Ingress Rate control
  • Egress Traffic shaping
  • Classification based on Port Base / VLAN Tag / DSCP4 Priority Queues
  • WRR (Weighted round-robin) / BE (Best Effort) / SP (Strictly Priority)
  • 802.1Q Tag-Based VLAN
  • Port-Based VLANPort-Based Q-in-Q
  • Priority Re-mappingVLAN Trunk mode
  • Easy to use web-based GUI for quick setup, configuration and management
  • Menu-driven interface/Command line interface (CLI ) for local console and telnet access
  • Password protected management and access control list for administration
  • SNMP v1/v2 (RFC1157/1901/1905) agent and MIB II (RFC1213/1493)EFM OAM (IEEE 802.3ah)
  • Software upgrade via web-browser/TFTPWAN Link/Activity, LAN Link/Act/Speed System: Power, Alarm and Management2MB Flash Memory , 4MB SDRAM
  • ITU-T G.991.2, IEEE802.3, 802.3u, 802.3ah, 802.3ad
  • DC 9V via AC power adapter 9W
  • 168 x 195 x 48mm1.3Kg
  • 0~50°C (Operating), 0~70°C (Storage), 10~90% non-condensing
  • CE, FCC, RoHS35,000 hours


DCE/2178LRE8 4 port LAN extender, 8 wire, 22.8Mbps, 120VAC