Editing Ringback number (section)

{{short description|Telecommunication facility for telephone line testing}}
A '''ringback number''' is a [[telephone number]] for a telephone line that automatically calls the line that the call was placed from, after the caller has hung up. The typical use of this facility is by telephone company technicians for testing a new installation or for trouble-shooting.<ref>{{Cite book|title=The telecommunications illustrated dictionary|last=Petersen|first=Julie|date=2002|publisher=[[CRC Press]]|others=Petersen, Julie K.|isbn=084931173X|edition= 2nd|location=Boca Raton, Fla.|pages=804|oclc=51169186}}</ref>