| Abstract
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This document specifies URL (Uniform Resource Locator) schemes "tel",
"fax" and "modem" for specifying the location of a terminal in the
phone network and the connection types (modes of operation) that can
be used to connect to that entity. This specification covers voice
calls (normal phone calls, answering machines and voice messaging
systems), facsimile (telefax) calls and data calls, both for POTS and
digital/mobile subscribers.
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