| FEATURES  
      Optimux-4E1 is a multiplexer combining up to four 
      E1 channels over a single coax or fiber optic E2 link. A pair of 
      Optimux-4E1 units offers simple and low-cost connectivity for four E1 
      channels at distances up to 75 km (46 miles).  
      Various optical interfaces are available: 
       
      
        850 nm for multimode fiber LED 1300 nm for single mode fiber LED 1300 and 1550 nm laser for extended range over 
        single mode fiber.  
      An optional second link provides backup using 
      automatic switchover upon link failure.  
      An optional second power supply provides power 
      redundancy and fail-safe operation.  
      Optimux-4E1 transmits each of the E1 channels 
      independently, such that the clock of each E1 channel is independent of 
      the clock of any other E1 channel. The E1 interface can be 75( unbalanced 
      or 120( balanced.  
      Optimux-4E1 is also available as a card for the 
      LRS-24 19" rack with central SNMP management. This option will provide a 
      compact cost-effective central solution.  
      To facilitate system diagnostics, Optimux-4E1 
      features LED status indicators, AIS alarm generation, recognition and dry 
      contact closure upon link failure.  
      Configuration, monitoring and maintenance can be 
      performed using an ASCII terminal or a SLIP connection to an SNMP 
      management station. Optimux-4E1in the LRS-24 rack can also be configured, 
      maintained and monitored using Ethernet, via the CL-2 card.  
      The SNMP management supports:  
      
        RADview-PC running on PC/Windows RADview-HPOV running on anHP OpenView UNIX 
        platform.  
      A voice service channel is available for end-to-end 
      communication between maintenance personnel (available with fiber optic 
      link only).  
      The standalone Optimux-4E1 is available as a 
      compact 1U high unit for mounting in a 19" rack.  
      Multiplexes four E1 channels over a single E2 link
      E2 transmission over coax or fiber optic cable
      Operates with multimode or single mode fiber
      Laser diode option Range up to 75 km (46 miles) Voice service channel Conforms to ITU G.703, G.742, G.823, G.956
      Optional second E2 link provides automatic backup
      Optional redundant power supply Management via ASCII terminal or SNMP management 
      station Remote management using in-band channel Compact 1U high size Card version for LRS-24 19" rack with central SNMP 
      management  OP-4E1/*/R/#+/DFour E1 Channel Multiplexer
 OP-4E1C/&/?/#+/DFour E1 Channel Multiplexer Card
 for LRS-24
 
      
        
          | & | Specify LRS-24 rack type F for ETSI version
 B for ANSI version
 |  
          | ? | Specify E1 connector type TB for terminal block
 SC for SCSI
 U for unbalanced BNC
 |  
          | * | Specify power supply AC for 115 - 230 VAC
 48 for -48 VDC
 24 for 24 VDC
 |  
          | R | Specify R for second redundant power 
          supply (optional) |  
          | D | Specify D for second redundant link 
          (same type as first link) (optional) |  
          | #+ | Specify link interface (# for connector type, followed
 by + for optical wavelength)
 |  
          | # | CXfor electrical (standalone version only)
 ST for ST type connector
 SC for SC type connector
 (standalone version only)
 FC for FC type connector
 |  
          | + | 85 for 850 nm, multimode, LED
 13 for 1300 nm, single mode, LED
 13L for 1300 nm, single mode, laser diode
 15L for 1550 nm, singlemode, laser diode
 |  ORDERING OP-4E1-MNG-CARD OP-4E1/48/FC13
 OP-4E1/48/FC13L/D
 OP-4E1/48/R/FC13L
 OP-4E1/48/R/FC13L/D
 OP-4E1/48/R/SC13/D
 OP-4E1/48/R/SC15L/D
 OP-4E1/48/R/ST13L
 OP-4E1/48/R/ST15L/D
 OP-4E1/48/R/ST85/D
 OP-4E1/48/SC13
 OP-4E1/48/ST13
 OP-4E1/48/ST13/D
 OP-4E1/48/ST13L
 OP-4E1/48/ST85
 OP-4E1/48/ST85/D
 OP-4E1/AC/CX
 OP-4E1/AC/R/CX
 OP-4E1/AC/R/FC13
 OP-4E1/AC/R/FC13L
 OP-4E1/AC/R/FC13L/D
 OP-4E1/AC/R/SC13/D
 OP-4E1/AC/R/ST13
 OP-4E1/AC/R/ST13/D
 OP-4E1/AC/R/ST13L
 OP-4E1/AC/R/ST85
 OP-4E1/AC/R/ST85/D
 OP-4E1/AC/R/STSF1
 OP-4E1/AC/R/STSF2
 OP-4E1/AC/SC13
 OP-4E1/AC/SC13L
 OP-4E1/AC/ST13
 OP-4E1/AC/ST13L
 OP-4E1/AC/ST85
 OP-4E1/AD/ST85
 OP-4E1/AD/ST85/D
 OP-4E1L/B/AC/CX
 OP-4E1M-ST13
 
    APPLICATIONS 
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