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The 4 and 8 port EtherXtend SHDSL Ethernet Access Devices (ETHX-3444 and ETHX-3484, respectively) have been designed to deliver bonded high-speed Ethernet First Mile (EFM) services over SHDSL.

The ETHX-34xx combines SHDSL bonding with advanced performance and management features to ensure high reliability, low latency, and maximum throughput.

  • Automatic load balancing and fail-over on bonded ports for optimum throughput and redundancy
  • Seamless migration from pre-standard Ethernet based SHDSL to full 802.3ah compliance using 2Base-TL and Ethernet OAM.
  • Works with MALC or IPD 12000E platforms, or in "bookend" configurations.
  • Compatible with all SHDSL network extender products as well as new EFM compliant CPE: Supports Loop Bonding using EFM or pre-standard bonding for maximum deployment flexibility.
  • Hitless adds and drops allow new lines to be added to (or removed from) a bonded group without loss of service.
  • Management options include 802.3ah OAM and CLI
Not available

Dimensions (H x W x D)

  • 1.75” (4.45 cm) High x 10” (21.6 cm) Wide x 7.5”
  • (19.1 cm) Deep


  • 3.35 lbs (1.52 kg)


  • -48V DC and Universal AC power options available


  • 4 or 8 extended-rate SHDSL (2Base-TL) Interfaces
  • 4 10/100 Ethernet Interfaces

Standards Support

  • ITU G.994.1 G.handshake
  • IEEE 802.3 Ethernet
  • IEEE 802.3ah EFM (2Base-TL)
  • IEEE 802.1Q/p 

Protocol Support

  • Host-based routing for per-interface IP address assignments
  • Network-based routing for per-interface IP subnet assignments
  • IP host and gateway support
  • RIP v1,v2 (RFC 1058,2453) (future)
  • RFC 1483/2684 Encapsulation
  • DHCP Server (RFC 2131, 2132) (future)
  • 802.1D support
  • VLAN 802.1Q support.


  • Serial terminal and telnet for Command Line Interface (CLI)
  • In-band IP via 10/100 Ethernet or WAN port
  • Web UI


  • Data rates provisionable up to 5.7Mbps symmetrical
  • Distances up to 24,000ft/7,320m
  • Cross-talk cancellation within bonded groups

Regulatory Compliance

  • NEBS: GR-63-CORE, GR-1089-CORE
  • EMC: FCC Part 15, CSA/C108.8, EN55022, CE Marking
  • Safety: UL1950, CSA C22.2 No. 950, EN60950, IEC950
  • CE Marking

Operating Requirements

  • Temperature: 32°F to 104°F (0°C to 40°C)
  • Non operating temperature: -40°F to 158°F (-40°C to 70°C)
  • Humidity: 5% to 95%, non-condensing
  • Altitude: -200ft to 16,500ft (-60m to 5,000m) 

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