What is IDSL?
ISDL is a hybrid of ISDN and DSL (Digital Subscriber Line) technology that uses a little of each to deliver a service that is slightly faster than ISDN, but significantly slower than most DSL services. A person might opt for ISDL if standard DSL service is not available in his or her area. Standard ISDN (Integrated Services Digital Network) service uses existing copper telephone lines to deliver data transfer speeds up to 128 kilobits per second (kbps). It also provides voice channels for telephone and fax, making it superior to standard dial-up, which cannot share an Internet connection with a telephone or external fax machine. Standard dial-up is also much slower than ISDN at about 53 kbps. However, ISDN is still a dial-up service, as opposed to an “always on” service like DSL. IDSL uses the same technology as ISDN except that it routes the signals through different equipment at the phone company or Telco. While ISDN uses the standard switching equipment, IDSL uses DSL-like equipment
