| The LD WDM systems use a modular architecture comprising three different chassis that are rack-mountable shelf: • LD1600 chassis can host 16 transponders plus OADMs, Muxes/Dmuxes, 1 + 1 redundancy, service and 2 management modules (for redundancy) • The LD800 chassis can host 11 transponders, OADMs, Mux/Dmux, 1 + 1 redundancy, service module and 1 management module • The LD400 chassis can host 5 transponders, OADMs, Mux/Dmux, 1 + 1 redundancy, service module and 1 management module Modular System • High density form factor supports - 1 to 16 CWDM channels - 1 to 64 DWDM channels - Hybrid CWDM and DWDM for transparent upgrade • The modules are hot swappable, allowing scalable, in-service expansion or channel maintenance • Multifunctional transponders provide transparent light paths compliant to ITU-T grid CWDM/DWDM wavelengths • A transponder module can be used in any LD family chassis • Rate independent: protocols of all data rates in the range of 10 Mbps to 2.7 Gbps are supported • Protocol transparent: Mix different protocols such as E3/DS3, SONET/SDH, Fast Ethernet, ESCON, Gigabit Ethernet, Fibre Channel, etc. • Multifunction, flexible SFP access transponders (TM-xSFP) • Special low dispersion solution for distances of up to 640 km. • Additional loop-back and power monitoring functionalities and other diagnosis information • High availability and redundancy using: - Fiber redundancy protection (1 + 1 protection) - O-BPSR and O-UPSR protection support - Y-cable and transponder redundancy backup • Sub-Rate Multiplexing. For example: Four ESCON per wavelength • Management includes - Optical Service Channel (OSC) for secure in-band management Passive Optical • Single Fiber; Single-mode Fiber and Multimode Fiber based Mux/Dmux • Flexible dual fiber and single fiber OADMs ranging from one to multiple wavelengths, including mix wavelengths • Boosters, In line and Pre optical amplifiers |