EFM Plug-in modem


          High throughput, high flexibility and advanced functionality make the Watson EFM plug-in modem the right choice for demanding Ethernet applications. Designed for CarrierEthernet over Copper (MEF), Ethernet in the First Mile (EFM), and Mobile Backhaul applications, it’s a highly convenient and cost effective substitute where no fiber is available. With the advanced DSL linecode G. SHDSL.bis, and Operation Administration and Maintenance functions (OAM), the Watson EFM modems deliver symmetrical data rates of up to 1 5.3Mbit/s per copper pair. Sophisticated synchronization options enable precision clock transmission to Mobile Basestations. Built-in pair bonding gives aggregate service rates up to 122.4 Mbit/s per customer. The modems have built-in VLAN and Class of Service (QoS, CoS) functions for traffic management and differentiated services.
           The Watson EFM plug-in card is designed for rackbased installations. The plug-in has the same form factor as Schmid’s other Watson modems and fits into the same subracks. Watson EFM plug-ins can
share subracks with other Watson modems for immediate rollout of Ethernet services from already existing points of presence currently used for E1 services only. The Watson EFM plug-in is interoperable with standard based EFM solutions from other vendors.
          Management of the Watson EFM plug-in is fully SNMP compatible and uses standardized Management Information Bases (MIBs). Performance, flexibility and reliability make the Watson Ethernet plug-in modem an important part of your transition from a legacy TDM-based to a next generation packet-based network. All backed by Swiss quality and by worldwide service and support.


  DSL Interface
  • 4 DSL Interfaces (SZ.868.V654)
  • 8 DSL Interfaces (SZ.868.V854)
  • ITU-T G.991.2 (2005), ETSI TS 101 524 (2006)
  • Line Code TC-PAM 16, TC-PAM 32, TC-PAM 64, TC-PAM 128
  • IEEE 802.3ah (EFM), ITU-T G.998.2 PAF-Bonding (pair
  • aggregation function)
  • 192 kbps – 1 5.3 Mbps per pair
  • 4 or 8 Spans, 1, 2 or 4 copper pairs per span
  Ethernet Interfaces
  • 4 Ethernet User Interfaces
  • IEEE 802.3 Ethernet
  • 100/1000 Mbps half/full duplex, Auto-Sensing, Auto-Crossover Connectors 4x RJ-45
  • SFP slot for optical module (SZ.868.V854)
  Operating modes
  • Point to point
  • Point to multipoint
  • Linear networks
  System Features
  • ITU-T G.826 performance monitoring
  • Fallback for bonded DSL spans
  • MAC Defect signaling of DSL status
  • Remote power feeding to regenerators and STU-R
  • Single and cascaded regenerators
  Ethernet Features
  • Maximum frame size 2’047 bytes
  • Single and double tagged VLANs (802.1q, QinQ)
  • Layer 2 and layer 3 classification (802.1p, DSCP)
  • 8 classes of service
  • Strict or weighted fair queuing
  • Per-port rate limiting
  • Rapid Spanning Tree (IEEE 802.1d)
  • Ethernet Trunking (IEEE 802.3ad)
  • MEF9, MEF13, MEF14, MEF19

**If you need more information,Please contact us.

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