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(Voice Over IP) A digital telephone service that uses the Internet for transport, as well as private IP networks. "IP" stands for "Internet Protocol." In order that calls can originate and terminate from regular telephones, connections to the public telephone network (PSTN) are also provided. Telephone companies, cable companies and dedicated providers offer VoIP calling for a fixed monthly fee or low per-minute charge. Customers must have Internet access.

Telephony Protocols: SIP/H.323 and Skype
VoIP uses two telephony protocols for handling connections (see SIP and H.323), and most VoIP systems support both. Skype uses its own protocol (see Skype).

Handset Based
All IP handsets plug directly into the Internet, and a large variety of native IP desk and cordless phones are available. Traditional analog phones can also be used by plugging them into an analog telephone adapter (ATA), which converts the analog signals to IP and vice versa (see analog telephone adapter).

Software Only = Softphone
VoIP may be entirely software based, which uses an app in a mobile device or a computer equipped with microphone and speakers. Typically free if both sides are on devices; calls to a regular telephone are per minute. In 1995, VocalTec Communications introduced the first VoIP service in the U.S.; entirely software based (see softphone). Skype is a very popular softphone-based VoIP service (see Skype). See SIP provider.

VoIP Features
Along with other features, voicemail, caller ID, call forwarding and a softphone option are typically part of a VoIP package. Phone numbers with area codes outside of one's own home area may also be an option (see virtual phone number). See IP telephony for more details and history of the technology.

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In fact, the company also offer hiring a VoIP team model under which one may hire a team consist of a project manager, one or more VoIP developer(s) who can be senior or junior, and a QA.
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"Rather than having one of those expensive boxes on-site, which can cost upwards of tens of thousands of dollars," Garcia says, "we can provide the same VoIP services over the standard Internet or data connection."
"That is where it stands according to my knowledge and I haven't heard from du about VoIP. The success depends on the price and quality of service."
VoIP is delivered to customers' premises through SIP trunks over the Internet on broadband or on traditional data T1 circuits, which are significantly less expensive than voice lines or voice T1s.
is a broadband VoIP telecom company offering local and long distance VoIP services to consumers and business owners.