Don't miss an insight. Subscribe to Techopedia for free.

Subscribe
Advertisements

ISDN Digital Subscriber Line

What Does ISDN Digital Subscriber Line Mean?

ISDN Digital Subscriber Line (IDSL) is a technology that provides DSL over an ISDN line. IDSL transmits data at a rate of 144 kbps and was originally developed by Ascend Communications, which was acquired by the company that is now Alcatel-Lucent.

Advertisements

Techopedia Explains ISDN Digital Subscriber Line

IDSL is basically a cross between xDSL and ISDN. Transfer rates are slightly higher than ISDN (144 kbps vs 128 kbps), but much slower than standard DSL connections. In addition, a major benefit of switching to IDSL from ISDN is the always-on connection.

Advertisements

Related Terms