Wave Review

Up-to-date information about critical issues and the latest advances in telecom test and measurement, network monitoring and component/system manufacturing.

December 2006, Volume 12, Number 12

In this issue

VoIP Testing Essentials for Triple-Play Deployments

Unlike traditional telephony services, VoIP encodes the speaker’s voice into a series of packets, which may be dropped, errored, jittered or delayed as they travel over the network, degrading the voice signal. EXFO’s CoVALT was specifically designed to avoid these situations and be particularly useful to installation and maintenance technicians.
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Outsmarting the Splitters on PON Networks

PON network topology differs from traditional networks. Depending on the network deployment phase, the right OTDR should be carefully selected to ensure it will provide proper characterization. PON-ready OTDRs allow for end-to-end link characterization even through splitters.
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Active Ethernet: Frequently Asked Questions

The concept of active Ethernet was first introduced in 2004 with the IEEE 802.3ah standard, Ethernet in the first mile. Triple-play services can now be delivered over Ethernet architectures. This article provides answers to a few of the most frequently asked questions on active Ethernet.
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40 Gbit/s Testing Corner

Many network operators are seriously considering the implementation of 40 Gbit/s networks.

As experts in the field of network testing, we at EXFO have added a special section to our newsletter that will be dedicated specifically to 40 Gbit/s testing issues. Join us monthly for a concise look at different aspects of the technology and what they entail. This month:

Keeping Chromatic Dispersion in Line at 40 Gbit/s

Chromatic dispersion is a controllable issue at 10 Gbit/s. In 40 Gbit/s transmission, on the other hand, the tolerance for chromatic dispersion is 16 times more stringent than at 10 Gbit/s.
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Latest News
	EXFO Releases Advanced IPTV Software Package — 11/21/2006
	EXFO Launches Compact 10 Gigabit Ethernet Test Solution — 11/1/2006
	EXFO Releases New Functionality for Carrier-Grade Ethernet Testing — 10/18/2006
	EXFO Releases Next-Gen Cable Assembly and Component Test System — 9/20/2006

Hot tips
	What happens when I dial a VoIP call?
	When I dial a VoIP call the Network Operations Support Office says that I’m dialing the wrong number, even though I know I entered it correctly. What’s happening?
	At what speed do Ethernet networks operate?
	What is a PON?