Any telecommunications line that is continuously available for the subscriber with little or no latency. Dedicated lines are also referred to as «leased lines».
Businesses often lease dedicated lines from telcos so that they can have continuous, uninterrupted communication with branch offices and with the Internet.
The opposite of a dedicated line is a dial-up line, which costs less because it is used intermittently and requires fewer telco resources. However, dial-up lines suffer from the delaying effects of latency as well as less available bandwidth.
Dial-up lines are generally local loop Plain Old Telephone Service (POTS) connections that use modems and provide backup services for more expensive leased lines.
Dedicated lines are allocated to the subscriber's private domain, while dial-up lines are shared with all other subscribers in the Public Switched Telephone Network (PSTN) domain. Dedicated lines can be either point-to-point or multipoint communication paths.
The main advantages of dedicated lines are:
The main disadvantage of dedicated lines is that they cost more than dial-up lines.