Siemens optiPoint 410 Administrator's Manual page 87

Abbreviations and Specialized Terms Alphabetical Reference
VoIP
Abbreviation for "Voice over IP".
E.g., voice transmission through Æ IP technology.
WAP
Abbreviation for "Wireless Application Protocol".
Synonym for graphical applications on mobile telephones, organizers and
other suitable terminal devices, transferred in accordance with the proto-
col by the same name.
WSP
Abbreviation for "Wireless Session Protocol".
Protocol for transferring data to Æ WAP-enabled terminal devices.
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