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Dual-mode phones are the key to better-sounding calls

Potentially VoIP calls can sound radically better than what we are used to even on landline phones. So why don’t they? It may be lack of will. Some say the success of the mobile phone industry proves...

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WSJ on FMC

Today’s Wall Street Journal has a good article about T-Mobile’s UMA trial in Seattle. It says that T-Mobile may be rolling it out nationally as early as next month, despite some trial particpants’...

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Reliable VoIP

QoS metrics are important, and several companies have products that measure packet loss, jitter, latency and so on. But you can have perfect QoS, and your VoIP system can still be defective for all...

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Wi-Fi certification for voice devices

In news that is huge for VoWi-Fi, the Wi-Fi Alliance announced on June 30th a new certification program, “Voice-Personal.” Eight devices have already been certified under this program, including...

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Transparency and neutrality

Google and the New America Foundation have been working together for some time on White Spaces. Now they have (with PlanetLab and some academic researchers) come up with an initiative to inject some...

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VoIP on the cellular data channel

In a recent letter to the FCC, AT&T said that it had no objection to VoIP applications on the iPhone that communicate over the Wi-Fi connection. It furthermore said: Consistent with this approach,...

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ITExpo West — Achieving HD Voice On Smartphones

I will be moderating a panel discussion at ITExpo West on Tuesday 5th October at 11:30 am in room 306B: “Achieving HD Voice On Smartphones.” Here’s the session description: The communications market...

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Third Generation WLAN Architectures

Aerohive claims to be the first example of a third-generation Wireless LAN architecture. The first generation was the autonomous access point. The second generation was the wireless switch, or...

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QoS meters on Voxygen

The term “QoS” is used ambiguously. The two main categories of definition are first, QoS Provisioning: “the capability of a network to provide better service to selected network traffic,” which means...

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ISP Performance numbers from Netflix

Interesting numbers from the Netflix Tech Blog. Several things jump out at me. First, cable is faster than DSL, and wireless is the slowest. Second, again no surprise, urban is faster than rural. But...

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