What is IDSL and who wants it?
IDSL stands for ISDN Digital Subscriber Line. This special form of DSL is for people who have situations that won’t allow them to get other forms of high speed internet. For instance, ADSL and even SDSL can only reach people who are less than 17,000 feet from the nearest central office where the xDSL equipment resides. IDSL can reach up to 30,000 feet from the C.O. (central office) so people who thought they couldn’t get high speed DSL can sometimes qualify for IDSL. Another situation that prevents ADSL and SDSL from reaching some people who are otherwise within the distance limitation of a C.O. is called ‘pair gain’. This is a technology phone companies deploy to lower build-out costs by taking a single copper pair and “splitting” it into multiple voice streams to serve multiple homes from one line. This “pair gain” line cannot support ADSL or SDSL transport, but IDSL CAN cross a pair gain line so again people who have been told they don’t qualify for DSL may still be able to get serv
