Articles and Whitepapers - 2004
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December 2004 —
Circuit Emulation Services-over-Packet and Cellular Backhaul AnalogZone In this continuing series on CES-over-Packet technology, applications engineer Peter Meyer discusses using CES-over-Packet in a cell site backhaul application. While carriers replace T1/E1 access lines with a packet-based connection, CES-over-Packet technology offers a solution for seamlessly carrying TDM traffic over the new packet network. 
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December 2004 —
Adding Timing Redundancy to Comm Equipment Designs
CommsDesign
Zarlink's Slobodan Milijevic looks at serial timing redundancy as a technique that lets designers align primary and secondary timing card clocks and, in turn, bring better timing redundancy to networking and telecom equipment designs.
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November 2004 —
The Challenge of Designing In-body Communications Embedded Systems Programming The concept of in-body communications networks once was the domain of science fiction writers. Today, thanks to advanced ultra low-power RF (radio frequency) capabilities, a pacemaker can make a wireless telephone call to the doctor's office to report health data. In this Embedded Systems cover story, Zarlink ultra low-power experts Ake Sivard, Peter Bradley, Peter Chadwick, and Henry Higgins look at the challenges of sending data out of a human body.
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October 2004 —
Circuit Emulation Services-over-Packet and Standards Adoption AnalogZone With the continued need to carry TDM services over new packet-based networks, Zarlink's Bruce Ernhofer and Tim Frost take a close look at the Circuit Emulation Services-over-Packet standards work currently underway with the ITU, IETF, MPLS Forum and the Metro Ethernet Forum.
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August 2004 —
Making the Packet Connection with TDM-over-IP: A Technology Primer AnalogZone When planning a migration from a circuit-based to packet switched network infrastructure, one major hurdle carriers face is how to efficiently transport revenue-generating legacy services. An emerging solution is TDM-over-IP technology. In this article, Zarlink's Bruce Ernhofer outlines some of the economic and competitive issues pushing carriers towards network convergence, and the advantages of TDM-over-IP technology.
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August 2004 —
Building the Better Backplane: The Marriage of TDMoIP and VoIP Compact PCI Systems The tide is turning, and businesses are increasingly ready to migrate circuit-switched voice services to their data networks to realize infrastructure and maintenance savings. In this article, Zarlink's Tao Lang looks at CES (Circuit Emulation Services) as a technology that offers a lower cost, evolutionary approach supporting a wider range of applications in comparison with VoIP.
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July 2004 —
Echo in the public network: What is the worst case? Telephony
Zarlink's Gord Reesor examines what is required from voice echo cancellers to ensure that next-generation networks provide quality of service comparable to today's public switched telephone network.
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June 2004 —
A New Tract Record New Electronics In a special report on Medical Electronics, New Electonics' reporter Vanessa Knivett discusses how Zarlink's ultra low-power expertise plays a crucial role in Given Imaging's swallowable camera capsule.
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May 2004 —
The Swallowable Camera Capsule - The Inside Story from Zarlink Semiconductor Ottawa Citizen Business TV In an interview with Ottawa Citizen Business TV, Zarlink Chief Technical Officer Peter Burke discusses the medical advances supported by Given Imaging's swallowable camera capsule and some of the challenges of ultra low-power wireless design.
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May 2004 —
High Performance Synchronization Designs in Transmission Systems EDN Asia Special Report
Network synchronization and clock generation is the most important part of all high-speed transport network systems. In this paper, Ullas Kumar, Applications Engineering Manager - Asia Pacific with Zarlink, describes jitter and wander, the causes of these clock impairments and how they affect the transmission system.
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March 2004 —
Understanding Jitter Issues in OC-48/OC-192 Line Cards EE Times
Co-authored by Zarlink's Russ Byers and Silvana Rodrigues, this article discusses the challenges designers face in achieving accurate network timing and synchronization in complex, high-speed SONET/SDH transmission systems where jitter generation, tolerance and transfer are key considerations.
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March 2004 —
Telecom standard is more than just a checkmark Approval Magazine Zarlink's Aaron Ramsey explains how performance targets established by telecommunications standards translates into real world systems operation, with specific focus on the ITU-T G.168 standard for Voice Echo Cancellers.
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