An IP PBX or VoIP phone system replaces a traditional PBX or phone system and gives employees mobility, with a single portable extension number, the ability to hold audio and video conferences, and to call colleagues free using Voice-over-Internet-Protocol (VoIP). All calls are sent via packets over a data network instead of using the traditional phone network. With the use of a VoIP gateway, you can connect existing phone lines to the IP PBX and make and receive phone calls via a regular PSTN line. The IP PBX, SIP & VoIP FAQ helps answer common questions about VoIPSIP, IP PBX / VoIP Phone System hardware and software, implementation and more.

Some of the most common questions about SIP are answered in this IP PBX, SIP & VoIP FAQ.

These FAQs are also available in: DE, FR, RU, IT, ES, NL, JP, CN, TR, PT(BR)RO, PL, GR, HU, MY, NO, SE, VN, DK, CZ, FI, KR, HK