Product Description
4/8E PDH is developed based on the VLSI chips. Relying on the advanced multiplexing technique, 4/8E PDH realizes 4/8 E1 and 100Mb/s fast Ethernet transmission with the function of Auto-Laser-Shutdown (ALS,optional).
Technology Characteristics
-> Transmits 4/8 E1 and one wire speed Ethernet
-> Line bit rate is 150Mb/s
-> Complies with ITU-T G.703 on interface and G.742, G.823 on jitter performance
-> Complies with ITU-T G.802.3 on Ethernet interface and supports auto-negotiation for 10M/100M and half/full duplex working mode
-> Supports VLAN and pause follow control for Ethernet
-> All necessary alarm functions, supervises the status of remote terminal
-> Supports E1 tributaries loop back for network fault diagnostics
-> Supplies standard order wire telephone
-> Supplies one customer RS232 data channel
-> Supplies RS232 for equipment management
-> AC 220 or DC-48 is optional
-> Single board design, 1U, and 19 Inch standard


Optical interface:
-> Transmit Mode : Single/ Multi-mode
-> Module : Single/Double Fiber
-> Interface : FC/SC/ST
-> Wavelength : 1310nm/1550nm
-> Distance : 2Km/40Km/60Km/120Km
E1 interface:
-> Bit rate : 2.048Mb/s , í+50ppm
-> Impedance : 75ª+ unbalanced(Declaration is needed if 120ª+ balanced required)
-> Coding: HDB3, according to ITU-T G.703
-> Jitter: complies with ITU-T G.823 and G.742. Seeing appendix
Ethernet interface:
-> 10M/100M through auto-negotiation
-> Full/Half duplex through auto-negotiation
-> Connector: RJ-45
-> See appendix for Throughput, Packing error rat, Delay, and others
Order wire interface:
-> Phone set: Standard 2-wire phone set
-> Bandwidth: 64Kb/s
-> Coding: PCM
RS232 for management:
-> Bit rate: 9600b/s
-> Data width: 8bits
-> Stop bit: 1bit
-> Parity check bit: None
-> Connector: DB9 (pin)
RS232 for customer data channel:
-> Bit rate: í_250kb/s
-> Connector: DB9(pin)
General characteristics
-> Power : 220Ví+20% , -36 ~ -72V
-> Power Consumption : < 5W
-> Environment Temperature : 0íµ-50íµ
-> Size : 483í-200í-44mm
-> Net Weight : 2.5Kg