Pdh Multiplexer Onc-4

PDH Multiplexer ONC-4 is developed based on the VLSI chips. It supports multiple E1 interfaces,very suitable for small-capacity-switch networking.users loop line network,mobile communications (base station),private network.DDN.etc.The advanced dual-light-beam switching at vestoration mechanism enables the series to achieve 1&1 service protection.

Technology Characteristics
a Supply 4*E1 transparent transmission
a Optical line bit rate is 150Mbps
a Complies with ITU-T G.703 on interface and G.742, G.823 on jitter performance
a All necessary alarm functions, supervises the status of remote terminal
a Supports E1 tributaries loop back for network fault diagnostics
a Supplies standard order wire telephone
a Supplies one customer RS232 transparent data channel
a Supplies RS232 for equipment management
a AC 220 or DC-48 is optional
a Single board design, 1U, and 19 Inch standard

Optical interface
a Transmit Mode : Single/ Multi-mode
a Module : Single/Double Fiber
a Interface : FC/SC/ST
a Wavelength : 1310nm/1550nm
a Distance : 2Km/40Km/60Km/120Km

E1 interface:
a Bit rate : 2.048Mb/s , A 50ppm
a Impedance : 75IC unbalanced(Declaration is needed if 120IC balanced required)
a Coding: HDB3, according to ITU-T G.703
a Jitter: complies with ITU-T G.823 and G.742. Seeing appendix