Telephony (/təˈlɛfəni/ tə-LEF-ə-nee) is the field of technology involving the development, application, and deployment of telecommunications services...

Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for voice calls for the delivery of voice communication...

Mobile telephony is the provision of telephone services to mobile phones rather than fixed-location phones (landline phones). Telephony is supposed to...

Computer telephony integration, also called computer–telephone integration or CTI, is a common name for any technology that allows interactions on a telephone...

In marketing, contact center telephony is the communication and collaboration system used by businesses to either manage high volumes of inbound queries...

include voice, video and messaging applications. SIP is used in Internet telephony, in private IP telephone systems, as well as mobile phone calling over...

A party line (multiparty line, shared service line, party wire) is a local loop telephone circuit that is shared by multiple telephone service subscribers...

doctor's appointments and meetings. Internet Protocol (IP) telephony, also known as Internet telephony or Voice over Internet Protocol (VoIP), is a disruptive...

ago (1999) Headquarters Brussels, Belgium Services Mobile and fixed-line telephony Revenue €610,000,000 (2014) Number of employees 824 Parent Telenet Website...

Automatic route selection is a private branch exchange (PBX) feature that allows a system to route a telephone call over the most appropriate carrier and...