Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol (IP) networks, such as the Internet.
A voicemail system is a computer-based system that allows callers to leave a recorded message when the recipient has been unable or unwilling to answer the phone. Calls may be diverted to voicemail manually or automatically. The caller is prompted to leave a message and the recipient can retrieve the message at a later time.
In telephony, an automated attendant allows callers to be automatically transferred to an extension without the intervention of an operator/receptionist. Many AAs will also offer a simple menu system. An auto attendant may also allow a caller to reach a live operator by dialing a number, usually "0". Typically the auto attendant is included in a business's phone system such as a PBX, but some services allow businesses to use an AA without such a system. Modern AA services can route calls to mobile phones, VoIP virtual phones, other AAs/IVRs, or other locations using traditional land-line phones or voice message machines.
A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system (KTS) to the private branch exchange (PBX).
Google Talk was an instant messaging service that provided both text and voice communication. The instant messaging service was variously referred to colloquially as Gchat, Gtalk, or Gmessage among its users.
Sipgate, stylised as sipgate, is a European VoIP and mobile telephony operator.
Mobile VoIP or simply mVoIP is an extension of mobility to a voice over IP network. Two types of communication are generally supported: cordless telephones using DECT or PCS protocols for short range or campus communications where all base stations are linked into the same LAN, and wider area communications using 3G or 4G protocols.
Truphone is a GSMA-accredited global mobile network that operates its service internationally. The company is headquartered in London and has offices in ten other countries, being spread across four continents.
International telephone calls are those made between different countries. These telephone calls are processed by international gateway exchanges (switches). Charges for these calls were high initially but declined greatly during the 20th century due to advances in technology liberalization. Originally they were placed via long-distance operators. The calls were transmitted by cable, communications satellite, radio, and more recently, fiber optics and Voice over Internet Protocol (VoIP). International direct dialling was introduced in the 1970s, so calls can be dialed by country code without an operator.
Google Voice is a telephone service that provides a U.S. phone number to Google Account customers in the U.S. and Google Workspace customers in Canada, Denmark, France, the Netherlands, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the contiguous United States. It is used for call forwarding and voicemail services, voice and text messaging, as well as U.S. and international calls. Calls are forwarded to the phone number that each user must configure in the account web portal. Users can answer and receive calls on any of the phones configured to ring in the web portal. While answering a call, the user can switch between the configured phones. Subscribers in the United States can make outgoing calls to domestic and international destinations. The service is configured and maintained by users in a web-based application, similar in style to Google's email service Gmail, or Android and iOS applications on smartphones or tablets.
Skype offers a number of features based around calling, messaging, video chat, and file and screen sharing. The following is a partial list of Skype's features:
Unified communications (UC) is a business and marketing concept describing the integration of enterprise communication services such as instant messaging (chat), presence information, voice, mobility features, audio, web & video conferencing, fixed-mobile convergence (FMC), desktop sharing, data sharing, call control and speech recognition with non-real-time communication services such as unified messaging. UC is not necessarily a single product, but a set of products that provides a consistent unified user interface and user experience across multiple devices and media types.
eVoice is a telecommunications service owned by j2 Global, Inc. (NASDAQ:JCOM). The company manages incoming and outgoing calls using virtual phone numbers. The service was initially founded by Wendell Brown, Mark Klein, and Craig Taro Gold in 2000 and re-launched in March 2010 with an expansion of services that include both individual, personal uses as well as services for businesses.
Iristel is a Canadian provider of telecommunication services that is a competitive local exchange carrier (CLEC). The company was founded in 1999 and is headquartered in Markham, Ontario.
The 3CXPhone System is the software-based private branch exchange (PBX) phone system developed and marketed by the company, 3CX. The 3CX Phone System is based on the SIP standard and enables extensions to make calls via the public switched telephone network (PSTN) or via Voice over Internet Protocol (VoIP) services on premises, in the cloud, or via a cloud service owned and operated by the 3CX company. The 3CX Phone System is available for Windows, Linux, Raspberry Pi and supports standard SIP soft/hard phones, VoIP services, faxing, voice and web meetings, as well as traditional PSTN phone lines.
Acrobits is a privately owned software development company creating VoIP Clients for mobile platforms, based in Prague, Czech Republic.
TU Me was a freeware instant messaging and Voice over IP app developed by Telefónica Digital. It allowed users to send instant messages, make free phone calls to contacts, share photos, record and send audio messages, and share their location. TU Me worked on 3G and WiFi networks.
Libon is a voice over IP application developed for iOS and Android by Orange S.A.’s subsidiary, Orange Vallée. The application is available for free on the App Store and Google Play in 90 countries, including in countries where Orange does not have a presence in the telecommunications industry, such as the United States.
Comparison of user features of messaging platforms refers to a comparison of all the various user features of various electronic instant messaging platforms. This includes a wide variety of resources; it includes standalone apps, platforms within websites, computer software, and various internal functions available on specific devices, such as iMessage for iPhones.
