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VoIP is usually implemented as a cost-saving measure over POTS (Plain old telephone systems). The same holds true now for VoIP recording. Most recording vendors are able to record the various standards of VoIP such as G.711, G.729a/b and G.723 and software-only solutions as compared to the intensive hardware and software associated with legacy PBX recording.
Yealink Network Technology Co Ltd T27G VoIP Telephone Avaya IP phone. The overall hardware may look like a telephone or mobile phone. A VoIP phone has the following hardware components An handset with a headphone and a microphone, unless the whole telephone is a hand-held device containing these; A loudspeaker to act as a speakerphone
Other companies, such as Symbol Technologies, SocketIP, and Digium, have implemented the protocol in VoIP terminals and IP phones, media gateway controllers, and softswitches. An open source implementation of a call agent is available in the Asterisk and FreeSWITCH systems. [4] IPBlue provides a soft phone that emulates a Cisco 7960 telephone. [5]
Full-service VoIP phone companies provide inbound and outbound service with direct inbound dialing. Many offer unlimited domestic calling and sometimes international calls for a flat monthly subscription fee. Phone calls between subscribers of the same provider are usually free when flat-fee service is not available. [12]
Interactive voice response (IVR) is a technology that allows telephone users to interact with a computer-operated telephone system through the use of voice and DTMF tones input with a keypad. In telephony , IVR allows customers to interact with a company's host system via a telephone keypad or by speech recognition, after which services can be ...
SIP trunking is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications facilities. [1]
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