PDH Multiplexers: STM1-1 fiber converter, V.35/ E1/RS485 fiber modem, E1/2E1/4E1/8E1/16E1 (120ohm/75ohm) fiber optical multiplexer, 1+1 PDH multiplexer, NxE1+1/2/4ETH optical multiplexer, 4U/6U chassis, Phone optical multiplexer; card type or standalone in mini rack or 19inch rack; dual fiber/single fiber with SC/FC connector; 220V/110V/48V or both power supply; transmitting distance up to 120km.

PDH Multiplexers are E1 point-to-point optical transport equipments that use the FPGA chips and easy to upgrade. It is single board structure, and the largest transmission capacity is 16E1. The outer design use the standard 19 inches rack, so the volume is little, weight is light, the operation is convenient and credit.

N*E1 PDH Fiber Optic Multiplexers use the PDH fiber transmission technologies. The 2M (E1) interfaces can connect with the exchanger, light loop device and multi-diplexer directly to form the micromini or the special network. Complete alarm function for N*E1 PDH Fiber Optic Multiplexers, it is stable, easy to maintenance and install, small in size. It can support one digital service telephone. manufacture E1 Fiber modem, 4E1, 8E1, 16E1 Fiber Optical Multiplexer and Chassis.

4E1 PDH Fiber Optical Multiplexers Singlemode Dual Fiber 20KM 19 Inch Rack(with the orderwire phone)
The 4E1 PDH fiber optical multiplexer is a fiber media transport for 4 x G.703 E1 transmission. The BNC model provides unbalanced 75 Ohm coaxial connections while the RJ-45 model provides balanced 120 Ohm connections over twisted pair wiring. All media converters are available with either multi-mode or single-mode optical tranceivers and with connectors for SC or FC.
Specifications
Single mode dual optical port-4 channels of E1 ports
Low power consumption
ISO certification
Optional fiber redandancy are provided
Optional Power redundancy to ensure stable system
Optional orderwire phone are provided
Optional function of ALS and SNMP
Main Feature
Provide 4E1 interface (120BG telephone channel)
Provide function of 4E1 remote loop,fiber local loop,and 1 interface phone
Two fiber two direction and single fiber two direction
Optional power 1+1 to ensure stable system
Optional 1+1 fiber and the ALS and SNMP,Please state the requirement when in order
4E1 PDH multiplexer realizes 1~4E1 transmission over fiber
E1 spur track loop back testing features, easy to be installed and maintenance
External dimensions: The 19 inch rack
Optical optional by customer 's requirement
Interface