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Voice over Internet Protocol (VoIP) gateway is a device that converts analog telephony signals to digital. After converting the signal, the VoIP gateway organizes it into data packets and encrypts it for transmission. VoIPs use VoIP gateways for switched and network interfacing.
Techopedia Explains Voice Over Internet Protocol Gateway
VoIP gateways include the following features:
- Call routing, packetization, and control signaling management
- Voice and fax compression/decompression
- External controller interfaces, for example, to a softswitch, billing system, or network management system
VoIP endpoints must share a communication protocol and at least one audio codec, such as Session Initiation Protocol (SIP), which is standardized by the Internet Engineering Task Force (IETF).
Skype and Google Talk are VoIP home phone services and solutions that are also used for businesses that apply proprietary protocols and Extensible Messaging and Presence Protocol (XMPP). VoIP applications also may offer Asterisk’s open-source Inter-Asterisk Exchange Protocol (IAX).
