Editing Dialer (section)

{{Short description|Electronic device}}
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A dialer ([[American English]]) or dialler ([[British English]]) is an electronic device or software that connected to a [[telephone]] line to monitor the dialed numbers and Automatically modify them to seamless access to services that  require long [[Trunk prefix|national]] or [[International access code|international]] access codes. A dialer automatically inserts and modifies the numbers based on the time of day, country, or area code being dialed, allowing the users to connect through service providers offering  the best rates. For instance, it may  use one service provider for international calls and another for mobile network. This technique is known as prefix insertion or [[least cost routing]]. A line-powered dialer draws power directly from the telephone line and does not require an external power source.

Another type of dialer is [[software]] that establishes an [[Internet]] or network connection over [[Telephone|analong telephone lines]] or [[Integrated Services Digital Network]] (ISDN). Many [[Operating system|operating systems]]  include built-in dialers that use the [[Point-to-Point Protocol]] (PPP), such as [[WvDial]].

Many [[Internet service provider|internet service providers]] offer installation CDs to simplify the process of setting up a proper [[Internet connection]]. They either create an entry in the [[operating system]]'s dialer or install a separate dialer (as the [[AOL]] software does).

In recent years, the term "dialer" often refers specifically to dialers that connect without the user's full knowledge as to cost, with the creator of the dialer intending to commit [[fraud]].