Voice over Internet Protocol (VoIP), also called IP telephony, is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services over the public Internet, rather than via the public switched telephone network (PSTN).
Enhanced 911, E-911 or E911 is a system used in North America to automatically provide the caller's location to 911 dispatchers. 911 is the universal emergency telephone number in the region. In the European Union, a similar system exists known as E112 and known as eCall when called by a vehicle.
A softswitch is a central device in a telecommunications network which connects telephone calls from one phone line to another, across a telecommunication network or the public Internet, entirely by means of software running on a general-purpose computer system. Most landline calls are routed by purpose-built electronic hardware; however, soft switches using general purpose servers and VoIP technology are becoming more popular.
Digium, Inc., a communications technology company based in Huntsville, Alabama, is a subsidiary of Sangoma Technologies. In 1999, Digium’s founder Mark Spencer created Asterisk, the open source software project that can be used to turn a personal computer into a communications server or Voice over IP (VoIP) phone system. Today, Digium’s core business lines include Switchvox, the Asterisk-based VoIP business phone system, Digium IP phones, and Asterisk telephony software and hardware products. Digium continues to make Asterisk available to the global development community for free at Asterisk.org.
Skype for Business Server is real-time communications server software that provides the infrastructure for enterprise instant messaging, presence, VoIP, ad hoc and structured conferences and PSTN connectivity through a third-party gateway or SIP trunk. These features are available within an organization, between organizations and with external users on the public internet or standard phones.
SIPfoundry is a not-for-profit organization, whose mission is to promote and advance open-source software projects based on the Session Initiation Protocol (SIP). The community aims to support users, developers, and distributors of SIP-based products.
sipXecs is an open-source enterprise communications system. It was initially developed as a proprietary voice over IP telephony server in 2003 by Pingtel Corporation in Boston, MA, and later extended with additional collaboration capabilities in the SIPfoundry project. Its core feature is a software implementation of the Session Initiation Protocol (SIP), which makes it an IP based communications system.
In voice telecommunications, least-cost routing (LCR) is the process of selecting the path of outbound communications traffic based on cost. Within a telecoms carrier, an LCR team might periodically choose between routes from several or even hundreds of carriers for destinations across the world. This function might also be automated by a device or software program known as a "Least Cost Router."
Mobile VoIP or simply mVoIP is an extension of mobility to a Voice over IP network. Two types of communication are generally supported: cordless/DECT/PCS protocols for short range or campus communications where all base stations are linked into the same LAN, and wider area communications using 3G/4G protocols.
Communications servers are open, standards-based computing systems that operate as a carrier-grade common platform for a wide range of communications applications and allow equipment providers to add value at many levels of the system architecture.
Snom Technology GmbH is a German company which manufactures Voice over Internet Protocol (VoIP) telephones, based on the IETF standard Session Initiation Protocol (SIP). Snom's products are targeted at the small- to medium-sized business sector, home offices, Internet service providers, carriers, and original equipment manufacturers. The company is headquartered in Berlin, Germany
Iristel is a Canadian provider of Voice over Internet Protocol services, and is designated as a competitive local exchange carrier. The company was founded in 1999, and is headquartered in Markham, Ontario, Canada.
Pbxnsip is a software implementation of a telephone private branch exchange (PBX) produced by a company of the same name. Like any PBX, it allows attached telephones to make calls to one another, and to connect to other telephone services including the public switched telephone network (PSTN) and Voice over Internet Protocol (VoIP) services. Its name is a combination of the acronyms PBX and SIP.
ALOE Systems is an international vendor of software solutions for the telecommunications industry. The company's main focus is on softswitch solutions, session border controllers, and IP-based service platforms for VoIP service providers.
ALOE Systems' head office is located in Toronto, Ontario, Canada.
Empirix Inc. is a privately held company which designs and manufactures service assurance testing and monitoring equipment for IP-based communications networks such as Voice-over-Internet-Protocol (VoIP), IP Multimedia Subsystem (IMS)-based, next generation network and 4G wireless networks. Empirix offers enterprise and carrier grade products as well as quality assurance products for network equipment manufacturers. Empirix is headquartered in Billerica, MA.
GENBAND US LLC was a privately held company that makes IP-based real time communications software products for fixed wireline, mobile, and cable service providers as well as large enterprises. The company was formed in 1999 as General Bandwidth, and is headquartered in Frisco, Texas. In the following 15 years it acquired several other companies doing related work.
Voiceserve Inc. is a Delaware, USA telecommunications and softswitch company headquartered in Middlesex, United Kingdom and incorporated December 9, 2005. The company offers its own in-house developed VoIP, mobility, and IP-PBX software solutions with management, administration, billing, mobility, hosted IP-PBX, and softphone functionality found among its services, VoipSwitch, Call-to-PBX, and Vippie.
REVE Systems is a privately held company providing software solutions for the telephony and IP telephony industry worldwide. The company was formed in 2003 and since 2008 headquartered in Singapore. It has operations in over 78 countries and employs over 860 employees. The company has been working with over 2,600 VoIP and telecommunication service providers throughout the world including Bangladesh, India, Hong Kong, USA, UK and Lebanon. The major development center is in Bangladesh and India.
Bicom Systems is a producer and vendor of Asterisk (PBX)-based unified communications solutions for VoIP businesses. Bicom Systems uses open standards telephony to create proprietary turnkey solutions. Products include all of the software and hardware components involved in building a VoIP business or ITSP.
