Learn about VoIP with this VoIP FAQ
For the past 50 years companies have been using conventional PBX & telephony systems which require separate networks for voice and data communications. But with the new VoIP telephony revolution, businesses are quickly migrating to VoIP PBX systems, which offer the huge advantage of converging data and voice networks.
VoIP, which stands for Voice over Internet Protocol, is basically the transmission of voice traffic over IP-based networks. Initially designed for data networking, the Internet Protocol (IP) was adapted to voice networking following its successful positioning as the global standard for data networking.
With VoIP phone systems users are not limited to making and receiving calls through the IP network. Traditional phone lines can be used to guarantee a higher call quality and availability. With the use of a VoIP gateway incoming PSTN/telephone lines can be converted to VoIP/SIP. The VoIP gateway allows the user to receive and place calls on the regular telephony network.
VoIP PBX systems provide mobility to employees, flexibility when a business expands as they are much easier to manage than the traditional PBX, and can also considerably reduce telephony administration costs.
Frequent questions about VoIP and much more are all covered in this VoIP FAQ.
- What is T38 fax?
- What is a STUN Server?
- What is RTP – Real Time Transport Protocol?
- What is a PBX Phone System?
- Can you List all Known SIP Responses?
- What are SIP Phones?
- What is Voice over IP?
- VoIP-Defined
- IP PBX, SIP & VoIP FAQ
- What is an Auto-attendant?
- What are the Benefits of an IP PBX VoIP Phone System?
- What is FOIP – Fax over IP?
- What is ECHO Cancellation?
- What is a Good Source of VoIP Info?
- What Does ENUM Mean?
- IP PBX: How an IP PBX / VoIP Phone System Works
- Example of SIP Call Session Between 2 Phones
- VoIP Gateway Information – Learn About VoIP Gateways
- VoIP Definitions
- What Different Types of CODECS are There?
- What SIP-based IP PBX’s are Available?
- What Do the Terms FXS and FXO Mean?
- What is a SIP-URI?
- What is IVR / Interactive Voice Response?
- What is SDP – Session Description Protocol?
- What is a SIP Server?
- Sip Phones / VoIP Phones Types
- What is SIP – Session Initiation Protocol?
- What are IP Phones / IP Telephones?
- What is H323?
- What is DID – Direct Inward Dialing?
- What is a Voicemail System?
- What is a VoIP Telephone?
- How Does FAX Work in VoIP Environments?
- What is SIP Forking?
- What are SIP Methods / Requests and Responses?
- What is RTCP – Real Time Transport Protocol?
- 10 Reasons to Switch to an IP PBX
- What are the Benefits of an IP PBX?
- What is Unified Communications?
- What is Fax to Email?
- What is Voicemail to Email?
- What are BLF Function Keys?
- What is ALG?
- What is a TDM PBX?
- What Unified Communications features does 3CX offer?
- What is IP Telephony?
- What are SIP Trunks?
- What is a Hosted PBX?
- Hosted PBX Vs On-Premise
- What to look for in a Hosted PBX Provider
- Why should you choose a Hosted PBX for your business?
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

What is a TDM PBX?
What is a Hosted PBX?
Why You Should Choose a Hosted PBX for Your Business
What to look for in a Hosted PBX Provider?
Hosted PBX Vs On-Premise PBX
Making the move from PSTN to SIP trunk: SIP trunking explained
What is IP Telephony?
What is ALG?
BLF Function Keys