International operator services (IOS) allow travelers to place an international call using a live telephone operator who speaks their language and accepts all forms of payment for connecting the call from anywhere in the world, to anywhere in the world. This specialty form of operator services uses collect call billing as well as credit card billing to allow callers to place calls without a

calling card ''Calling Card'' is the sixth studio album and eighth album overall by Irish singer/guitarist Rory Gallagher. A 1976 release, it was his second of four albums released on Chrysalis Records in the 1970s. Deep Purple/Rainbow bass guitarist Roger ...

or without the correct change for the pay telephone.

See also