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Throttling more common in mobile networks than on fixed networks?

As attention shifts to broadband quality of service experience, more tool for understanding what’s going on are becoming available. One tool Glasnost is described in the NYT:

In general, the Glasnost results suggest that telecom and cable TV operators, when they do use throttling, do so mostly to suppress bandwidth hogs and ensure a reasonable experience for all of their customers. Mr. Dischinger, now a computer engineer in Innsbruck, Austria, said throttling was much more commonly used by operators of mobile phone networks, which have much less capacity than landline grids.

But with operators starting to sell superfast landline broadband service for heavy data users, such as Deutsche Telekom’s high-speed fiber-to-the-home service, the competition for bandwidth — and the need for throttling — will only increase, Mr. Dischinger said.

“I highly doubt it can go on forever,” Mr. Dischinger said. “I cannot envision with the current network infrastructure they have that operators can continue to support people in the long term without more investment.”

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