Line sharing is the practice of one carrier running high-speed DSL service on a phone line while a second carrier supplies regular phone service on the same line.

CNN: DSL carriers seek free use of phone wires

Telmex is still the dominant fixed-line phone carrier in Mexico, two decades after Slim took it private.

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It's not technically part of the carrier's mobile line, but DoCoMo had one more announcement for spring: an HDMI dongle.

ENGADGET

Here, some packets are more equal than others, each having a different impact on the bottom line of the carrier.

FORBES: AT&T Looking to Double-Dip on Mobile Data Charges

Verizon, a local fixed-line and cellular carrier that serves both Washington and New York, among other cities, said calls to the area doubled from their normal peak volumes of 115 million in New York and 35 million in Washington in the wake of the incidents.

CNN: Networks hit, but telecom stays operational

As a naval line officer, the commanding officer of a carrier is given broad responsibility for his ship.

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The copper telephone line that ran to every house was regulated as a common carrier.

ECONOMIST: Economics focus

The net result: forget email service unless you use another carrier or WiFi to get to the Internet, which is available on most ships including Holland America Line.

FORBES: Verizon Smartphones And Cruise Ships Don't Mix

In 2001 Linux pranksters raced pigeons against a 40-gigabytes-per-second fiber line to test a concept a puckish American scientist first coined a decade earlier:CPIP--Carrier Pigeon Internet Protocol.

FORBES: Nerds Of A Feather