ISDN and ADSL

  Fateful Shadow 18:20 12 Nov 2003
Locked

Firstly, what does ISDN and ADSL mean? And which one of them would be broadband?

Thanks :)

  Diodorus Siculus 18:54 12 Nov 2003

ASDL is the Broadband one... ISDN splits your regular line in two

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ASDL (Asymmetric Digital Subscriber Line) Internet connections using DSL protocol with bandwidths from 16 to 640 Kbps upstream and 1.5 to 9 Mbps downstream.

ISDN (Integrated Services Digital Network) Special connections that use ordinary phone lines to transmit digital instead of analog signals. Briefly, ISDN is a telecommunications network that allows for digital voice, video, and data transmissions. ISDN replaces the slow and inefficient analog telephone system with a fast and efficient digital communications network. ISDN lines contain two channels: a B channel, which has a 64Kbps (kilobits per second) data transmission rate, and a D channel, which has either a 16Kbps or 64Kbps transmission rate. When the two lines are used together, transmitted data can travel at 128Kbps

  Steve N 22:16 12 Nov 2003

Broadband is just a term which generally describes high bandwidth connections. In general broadband speeds are accepted to be from either 256kbps downstream or 512kbps downstream. There has recently been a dispute with NTL where they were branding (and probably still are) a 128kbps connection as 'broadband', which in my opinion is a load of.....

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