Fiber Optical Multiplexer

UFM-680 STM-1 optical multiplexer equipment provides a flexible and cost effective solution to transport T1/E1, Nx64kbps and Ethernet Services over optical fiber. With modular system design, UFM-680 can accommodate different plugin cards for E1, T1 and V.35 Nx64kbps to fit user's current and future service requirement. UFM-680 embeds four Ethernet channels on board to share up to 100Mbps bandwidth for data transportation.

The total capacity of four 10/100 Mbps electrical Ethernet ports and up to 16 T1/E1 interfaces optimize the bandwidth utilization over the optical fiber. The optical link has 1+1 redundancy mechanism with APS (Auto Protection Switch) function to increase system reliability.

    Capacity Options

  • 4/8/12/16 T1/E1, 4 x V.35 (Nx64kbps), or a combination Ethernet Interface
  • Four 10/100Base-Tx Ethernet ports with VLAN features

  • Order Wire

  • Two-wire analog transmission(optional)

  • High Reliability

  • Transmission and power 1+1 redundancy

  • High Flexibility

  • Hot swappable design

  • High Maintainability

  • LCM & keypad local operation. Craft Interface, Telnet and GUI/SNMP network management functions

  • Compact Design

  • Only 1.0U in height

  • Standard Compatibility

  • ITU-T G.703, G.823, G.824, IEEE802.3u 10 Base-T & 802.3u 100 Base-Tx about Ethernet Interface, CE, RoHs

  • Low bit error rate(BER<10-10)
    Performance monitoring(PM) and history PM data storage


    Optical Interface

  • Line Rate: 155Mbps ±20ppm
  • Connector: SFP Module, LC/PC type
  • Optical Link 1+1 redundancy protection mechanism
  • Automatic Laser Shutdown(ALS) protection

  • E1 Signal Interface

  • Bit Rate: 2.048Mbps ±50ppm
  • Line Code: HDB3/AMI
  • Pulse Shape: Conform to ITU-T G.703
  • Impedance: 120Ω balanced or 75Ω unbalanced
  • Jitter: Conform to ITU-T G.823
  • Connector: RJ-48C/DB-25 for 120Ω balanced BNC for 75Ω unbalanced.

  • T1 Interface

  • Bit Rate: 1.544Mbps ±50ppm
  • Line Code: B8ZS/AMI
  • Impedance: 100Ω balanced
  • Jitter: Conform to ITU-T G.824
  • Connector: RJ-48C or wire-wrapping

  • Working temperature 0°C~65°C

    AC/DC dual power

    Ethernet Interface

  • Four RJ-45 ports for four 10/100Base-Tx, (comply with IEEE802.3u 10 Base-T and 802.3u 100 Base-Tx)
  • Support auto-MDIX function
  • Frame size is up to 1536 bytes
  • Bridge functions
    • Support MAC address filtering and Embedded 2K entries of address table per port
    • Support IEEE 802.1Q VLAN, Q in Q, 802.1P Qos, DSCP, 4
      priority queues per port, Rate limiting

  • V.35 Interface

  • Bit Rate: N x 64 Kpbs, N=up to 120
  • Connector: M34 Female

  • Power Supply

  • DC: -36~72V
  • AC: 90~260V, 47~63Hz

  • Installation

  • Rack mount on a standard 19"/23" rack compliant with ETS 300119


  • Standalone: 436mm x 44.5mm x 280mm (WxHxD)

  • Environment

  • Operation Temperature: 0 to 65°C
  • Relative Humidity: 5 to 90%, non-condensing

  • MTBF

  • 47,000 hours minimum


  • FCC ClassA part 15B
  • EN55082-1, EN55022
  • CE, RoHs

Available Low Speed Units

Tributary Unit Tributary Interface Connector Type
E1UBNC E1 (Chanel) BNC
ET1URJ(S)* E1/T1 (Chanel) RJ-48C
ET1UDB(S)* E1/T1 (Chanel) DB-25
V35M V.35 (Chanel) M34
* S-model is optional:ET1URJS and ET1UDBS can comply with IEC 61000-4-5:2005 ED.2.0