Verizon Communications announced a deal with Nortel Networks on Tuesday, the latest carrier moving to add packet-switching technology to its voice network. Other carriers are also slowly moving toward ...

As we mentioned last time, there was an entire industry built around using TDM bandwidth efficiently due to the compelling economics of building corporate private-line networks. By the late 1980s, ...

In packet switching architectures, multicast transmission to two or more ports is inherent to the forwarding mechanics of certain protocols while strictly operational necessities in others. For ...

You may recall that Ethernet networks are based on a protocol calledCarrier Sense Multiple Access with Collision Detection, commonly knownas CSMA/CD. This means that data packets from the various ...

As I finished last week's column on packet switching, a "teachable moment" took place (well, more of a "writable moment"), and it serves to illuminate another aspect of the Internet that remains the ...

These ToP (Timing-over-Packet) devices are specifically designed to transmit timing and synchronization over asynchronous packet switched networks. Deploying Zarlink’s revolutionary ZL 30301 and ...

Circuits as WAN connections battled successfully against packets for years because they guaranteed bandwidth, no matter what. If you bought a T-1 circuit, the service provider nailed up 1.5Mbps from ...

Verizon Communications this week announced plans to shift its nationwide telecommunications network to packet-switched technology as part of a plan to offer new voice-over-IP and multimedia services.

Telecommunications service provider Verizon Communications has begun using an Asynchronous Transfer Mode (ATM ) backbone to carry some voice calls, a step in the carrier’s first migration to a new ...

Sprint is to change its entire circuit-switched telephone network to packet technology in an attempt to keep up with customer demand for capacity, it announced Tuesday. All eight million of Sprint’s ...

The IEEE 1588 Precision Time Protocol enables precise time synchronization over the packet-based Ethernet network so that the time on a slave clock at one end of the network agrees with a master clock ...