4x E1/T1 + FE Fiber Multiplexer Card

4x E1/T1 + FE Fiber Multiplexer Card

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The single slot, single channel E1/T1 plus 100M Fast Ethernet fiber multiplexer card (FRM220-FOM04) is a dual slot, 4-channel E1/T1 plus 100M Fast Ethernet to 1+1 redundant fiber multiplexer card with an additional clear channel RS-232 and order wire.

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Additional Information

When the FRM220-FOM cards are placed in the FRM220 rack with NMC, the administrator can view the converter card’s status, type, version, fiber link status and alarms. Remote, fiber connected standalone card, can also be managed through in-band management via the chassis NMC. The card can be configured to enable or disable the port, reset the port, and provide local or remote diagnostic loopback. The optical aggregate of this multiplexer employs either a fixed transceiver or industry standard pluggable optics (SFP) operating at OC3/STM-1 data rates (155M). The SFP modules can be chosen to support single-mode, multimode, single fiber bi-directional or Coarse and Dense Wave Division Multiplexing (CWDM and DWDM).

  • 4 channels unframed E1/T1 (transparent)
  • 10/100Base-TX Ethernet (100M wirespeed)
  • Auto MDI/MDIX & Auto-Negotiation or Force Mode
  • Supports flow control 802.3x & 1514bytes MTU packets
  • Supports link fault Pass-Through for Ethernet
  • Supports Digital Diagnostics Monitoring Interface (DDMI) SFP
  • Supports local or remote In-band management by SNMP manager and console port
  • Supports On-Line F/W upgrade & Dying Gasp
  • One clear channel RS232 up to 250Kbps(Async)
  • 1+1 fiber protection, switching time < 50ms
  • AIS on signal loss on E1/T1 and fiber port
  • Loopback test on E1/T1, RS232, fiber ports
  • Supports Order wire Ear / Microphone port


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