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  CLR-PDH-FMx Series
  4/8/16 * E1 + Eth to Fiber Optic Converter SM SC 20km
  - E1 characteristic conforms to ITU-T G.703, G.823 and G.742  
  - Unframed E1 mode  
  - Balanced 120Ω interfaces  
  - Provides 4/8/16 x E1 G.703 transparent transmission over the fiber.  
  - 1+0 or 1+1 optical protection optional.  
  - Provide 4 x 100 Mbit/s Ethernet channels, Ethernet speed can be set for each port.  
  - Speed of optical port is 155Mbps, transmission range can reach 25Km  
  - E1 interface code is HDB3  
  - Ethernet port supports full/half duplex, 10M/100M auto-adaptable  
  - Ethernet port supports dot1Q VLAN  
  - Simultaneous 4 E1 & 100 Mbit/s full duplex operation  
  - LED indicators for alarm function and can monitor remote device status  
  - DIP switch settings  
  - Supports E1 local and remote loopback for installation