Using XchangePoint Switched Ethernet Services For SDH/SONET Circuit Protection
White Papers SDH circuits, particularly at capacities of 155Mb/s (STM-1) or higher, are often a preferred means of implementing private interconnect circuits between large ISPs to address mission-critical and/or high-volume peering requirements.
[January 1, 1970, 0:59]
VLSI Design Of A SDH Multiplexer/Demultiplexer
White Papers This paper discusses the implementation of a Regenerator Section Overhead (RSOH) integrated circuit for a Synchronous Digital Hierarchy (SDH) Chip. This digital integrated circuit chip is part of a SDH multiplexer/demultiplexer chip that is being...
[January 1, 1970, 0:59]
Selecting The Right Clock-Circuit Topology For Low-Jitter SONET/SDH Applications
White Papers Some commonly used analog PLL (phase locked loop) designs are unsuitable for sensitive clock-circuit applications, such as line cards for SONET/SDH networks. The circuit topology of Zarlink's new analog PLL provides superior low-jitter performance...
[January 1, 1970, 0:59]
Differential Delay Aware Routing For Ethernet Over SONET/SDH
White Papers The Virtual Concatenation protocol in SONET/SDH has ushered in a novel routing paradigm that enables a circuit to be "Split" and routed over multiple paths. However, this diverse routing causes differential delay among the paths which can impact...
[January 1, 1970, 0:59]
Intra-Domain GMPLS Control Plane Architecture For Automatically Switched Transport Network
White Papers This document describes an IP/MPLS based intra-domain control plane architecture that can be applied to different circuit switching technologies (including OTN, PDH and SONET/SDH). Many solutions have been proposed to enable Automatically Switched
[January 1, 1970, 0:59]
Generalized MPLS Control Plane Architecture For Automatic Switched Transport Network
White Papers This document describes a control plane architecture that can be applied to different packet and circuit switching technologies (including fiber, waveband, wavelength, PDH, and SONET/SDH). Many solutions have been proposed to enable automatically...
[January 1, 1970, 0:59]
Testing Ethernet Over SONET/SDH
White Papers The majority of metro and long-haul networks are based on SONET and SDH, as these protocols carry fixed-bandwidth circuit-switched voice very effectively. Ethernet over SONET/SDH (EoS) optimizes transport networks to adapt to data and storage...
[January 1, 1970, 0:59]
The King Is Dead - Recommendations For A New Monarch In The Quest For An Integrated Voice/Data Network
White Papers An optical core provides highly efficient, scalable core networking and is the goal of any migration and build out, but we must integrate current circuit switching (SONET/SDH) to be cost-effective. Providers today must figure out how to survive in...
[January 1, 1970, 0:59]
Design And Applications Of SDH Cross-Connection ASIC
White Papers The development of Synchronizing Digital Hierarchy (SDH) technique relies on the evolution of ASICs. This paper introduces a novel SDH cross-connection ASIC designed by the E&E Department of Tsinghua University.
[January 1, 1970, 0:59]
AXXESSIT'S Ethernet Over SDH Solution - Operator's Choice For Metro Access Network
White Papers SDH technology has been deployed in the backbone and in city rings by most of the network operators through the 90's, and most of the traffic in the network at that time was voice or circuit switched /TDM (Time Division Multiplexed).
[January 1, 1970, 0:59]
The Intelligent Optical Network - IP-Style Control In The Optical Domain
White Papers They will bring flexibility and scalability to the optical domain by combining the functionality of SONET/SDH, the efficiency of IP and the capacity creation of DWDM with advanced networking software.
[January 1, 1970, 0:59]
Resilient Packet Ring Backgrounder
White Papers Although SONET/SDH equipment represents the incumbent optical networking technology, it was designed for voice traffic and does not scale to the demands of today’s exponential data demands. Carriers are in need of a new way to gain revenue from...
[January 1, 1970, 0:59]
Global Optical Communication: RPR For Metro Networks
White Papers SONET)/synchronous digital hierarchy (SDH) circuit-switched layer. Traditionally, MANs have been circuit-switched networks that are optimised for voice traffic using the Synchronous Optical Network Metropolitan area network (MAN) plays a vital role...
[January 1, 1970, 0:59]
Study Touts Metro Ethernet Cost Savings
News Ethernet equipment typically can cost anywhere from 40 to 50 percent less than traditional SONET/SDH (Synchronous Optical Network/Synchronous Digital Hierarchy) gear, which is often used to transport traffic in a metropolitan network.
[January 26, 2004, 13:00]
