Definition of: ISDN (Integrated Services digital Network) an international standard for switched, digital dial-up telephone service for voice and data.

定义：ISDN(综合服务数字网络)，是一个国际转换标准，是为了语音和数据的数码拨号上网电话服务。

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Main.net's gear already serves 10, 000 European homes at speeds of 500 kilobits a second, roughly equal to average cable and digital subscriber line (DSL) speeds, but a tenfold increase over standard dial-up modems.

FORBES: Tilting at power lines