VoIP


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VoIP

VoIP

(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 existing 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
Regular phones can be used with many VoIP services by plugging them into an analog telephone adapter (ATA) from the VoIP provider or third party. The ATA converts the phone signals to IP packets. Native IP phones are also available.

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
Voicemail, caller ID, call forwarding and a softphone option (if not a softphone-only service) 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.






References in periodicals archive ?
A pioneer in VoIP technology since 1994, VocalTec provides proven trunking, peering, access gateway and service delivery solutions that enable flexible deployment of next-generation networks (NGNs).
RNKVoIP, a division of RNK Telecom, is the VoIP private label wholesaler for broadband providers, CLECs, cable providers and entrepreneurs.
The introduction of VoIP has had a significant impact on the Asian telecom market as call services become available at greatly reduced prices.
Mobile network operators: senior managers who wish to understand the strategic implications of wireless VoIP for future investment plans can quantify the opportunities and threats that wireless VoIP presents (including its impact on network traffic mix, revenue and investments) and identify appropriate actions that capitalise on opportunities afforded by cellular VoIP and mitigate the risks from third-party wireless VoIP services.
When cellular VoIP services mature, mobile operators must position them as premium voice services in order to maintain ARPU
Despite the decline in prices, the cost of VoIP allows these carriers to continue generating the profit margin that traditional TDM-switched voice services have enjoyed.
VoIP, like some traditional telephone services, does not fit within this definition and, thus, is not subject to this excise tax, because:
Apparently, while it's true that hackers can use the same means they use to tap into a network to tap into VoIP conversations, it is actually harder to tap into an IP network carrying voice data than it is to tap into a phone line.
Most SMBs have only a Skype- or Vonage-related consumer VoIP level of understanding; the vendors and service providers need to educate the SMB market regarding business class VoIP solutions and benefits.
VoIP service providers belonging to XConnect's Global Alliance can join DirectRoute and begin earning revenue with no additional technical or integration requirements.
QRadar's VoIP module provides customers with a set of security event correlation rules, application signatures, and specific VoIP security reports.
4 VoIP - a case of evolution, rather than revolution