title: VoIP and Internet telephony.
authors.forename: S
authors.initials: S
authors.lastname: Shropshire
authors.forename: L
authors.initials: L
authors.lastname: Nicoll
mesh_terms: D006801:Humans; D020407:Internet / Q000458:organization & administration*; D012984:Software / Q000191:economics / Q000639:trends*; D013689:Telephone / Q000191:economics / Q000639:trends*