High-order virtual concatenation (VC) has been hailed by many in the metro space as the key for making Ethernet a viable service to deliver over Sonet architectures. With its ability to right size at ...

As Internet usage continues its growth, carriers continue to see a steady increase in packet data traffic on their metro networks. Cable providers, or multiservice operators, are experiencing similar ...

Getting the most out of Ethernet and storage-area network services is the topic of our Technology Update this week. Specifically our author ([email protected]) looks at what’s known as the ...

Designed for 155.52-Mb/s transmissions, the 78P2252 transceiver IC is targeted for use as the interface to fiber-optic modules for SONET OC-3 or STM-1 applications. The device is manufactured using ...

A metropolitan area network (MAN) or wide area network (WAN) transport technology that carries IP packets directly over SONET transmission without any data link facility such as ATM in between. Packet ...

If you’re like many government bodies, you probably have a lot of Time Division Multiplexing (TDM) technology in your infrastructure. That is not uncommon, but it can be a significant strain on ...

Gigabit Ethernet is expanding into more metropolitan-area networks, but don’t expect Ethernet to supplant ATM and SONET in the MAN anytime soon. While Gigabit Ethernet offers application service ...

Among the array of startups and network-equipment companies with multiple products in their portfolios that are focusing attention on the burgeoning optical Ethernet space is Nortel Networks.

Marguerite Reardon started as a CNET News reporter in 2004, covering cellphone services, broadband, citywide Wi-Fi, the Net neutrality debate and the consolidation of the phone companies. Agere ...