Lumentis AB, a start-up based in Stockholm, introduced an add-drop and terminal SDH/SONET network solution over CWDM or DWDM wavelengths. The compact device provides a standards-compliant SDH/SONET VC-4 switching system with G.703 standard physical interfaces, standard G.781 synchronization, standard G.813 jitter and wander, and performance monitoring according to G.826. With a line rate of STM-16/OC-48, each wavelength can carry a logical SDH/SONET point-to-point, bus, or ring network with STM-1/OC-3 and STM-4/OC-12 add-drops.
http://www.lumentis.se
Lumentis Delivers Single-Slot, Single-Card SONET/SDH System
Share this article
Help others discover this reporting.
Explore More
From the Technology Graveyard
You just read about SONET. Here is what it replaced:
PDH (T1/E1/DS3) served from 1962. What ultimately replaced it?
PDH (T1/E1/DS3) time-division multiplexing that interleaved 24 (T1) or 30 (E1) 64 kbit/s voice channels into a frame, then stacked those into higher rates by bit-stuffing loosely synchronized streams. Its job passed to SONET — but the problem it solved, and the ideas it proved, live on in what replaced it. The standard rests here in the archive. One of 198 technologies here that opened a door and then held it for the next.
On this day
March 16From 25 years of the Converge Digest archive.