Product Description

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 **0Mb/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 **0Mb/s -> Complies with ITU-T G.**3 on interface and G.**2, G.**3 on jitter performance -> Complies with ITU-T G.**2.3 on Ethernet interface and supports auto-negotiation for *0M/**0M 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 RS**2 data channel -> Supplies RS**2 for equipment management -> AC **0 or DC**8 is optional -> Single board design, 1U, and *9 Inch standard Interface Parameters Optical interface: -> Transmit Mode : Single/ Multi-mode -> Module : Single/Double Fiber -> Interface : FC/SC/ST -> Wavelength : ***0nm/***0nm -> Distance : 2Km/*0Km/*0Km/**0Km E1 interface: -> Bit rate : 2.**8Mb/s , ?*0ppm -> Impedance : *5Ω unbalanced(Declaration is needed if **0Ω balanced required) -> Coding: HDB3, according to ITU-T G.**3 -> Jitter: complies with ITU-T G.**3 and G.**2. Seeing appendix Ethernet interface: -> *0M/**0M through auto-negotiation -> Full/Half duplex through auto-negotiation -> Connector: RJ**5 -> See appendix for Throughput, Packing error rat, Delay, and others Order wire interface: -> Phone set: Standard *-wire phone set -> Bandwidth: *4Kb/s -> Coding: PCM RS**2 for management: -> Bit rate: ***0b/s -> Data width: 8bits -> Stop bit: 1bit -> Parity check bit: None -> Connector: DB9 (pin) RS**2 for customer data channel: -> Bit rate: ≤**0kb/s -> Connector: DB9(pin) General charac