Comcast (nasdaq: CMCSA - news - people ) is about to throw its considerable weight behind internet-based telephony.

FORBES: Roberts: Comcast To Launch Internet Phones

Prices are coming under even more pressure as internet-based telephony takes off.

ECONOMIST: Telefonica looks to Europe | The

Like other telecommunications giants of DT's ilk, the onslaught of cellular and Internet-based telephony, along with cable operators offering triple-play packages of cable, broadband and phone services, has put a stranglehold on profits.

FORBES: Deutsche Telekom Dives On Profit Warning