|
Softphone
A softphone is a software program for making telephone calls over the Internet using a general purpose computer rather than dedicated hardware. The softphone can be installed on a piece of equipment such as a desktop, mobile device, or other computer and allows the user to place and receive calls without requiring an actual telephone set. Often, a softphone is designed to behave like a traditional telephone, sometimes appearing as an image of a handset with a display panel and buttons with which the user can interact. A softphone is usually used with a headset connected to the sound card of the PC or with a USB phone. Applications See Comparison of VoIP software Communication protocols To communicate, both end-points must support the same voice-over-IP protocol, and at least one common audio codec. Many service providers use the Session Initiation Protocol (SIP) standardized by the Internet Engineering Task Force (IETF). Skype, a once-popular service, used proprietary protoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparison Of VoIP Software
This is a comparison of voice over IP (VoIP) software that examines applications and systems used for conducting voice and multimedia communications across Internet Protocol (IP) networks. VoIP technology has transformed telecommunications by offering alternatives to traditional telephony systems while providing enhanced features and cost savings. For residential users, VoIP services typically provide significant cost advantages compared to traditional public switched telephone network (PSTN) services. These systems eliminate geographic restrictions on phone numbers, enabling users to maintain local numbers in any area code regardless of their physical location. For example, a user can operate a New York phone number while residing in Tokyo, facilitating global mobility and reducing international communication costs. In enterprise environments, VoIP technology enables the consolidation of voice and data networks into a unified IP infrastructure. This consolidation eliminates the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voice Over IP
Voice over Internet Protocol (VoIP), also known as IP telephony, is a set of technologies used primarily for voice communication sessions over Internet Protocol (IP) networks, such as the Internet. VoIP enables voice calls to be transmitted as data packets, facilitating various methods of voice communication, including traditional applications like Skype, Microsoft Teams, Google Voice, and VoIP phones. Regular telephones can also be used for VoIP by connecting them to the Internet via analog telephone adapters (ATAs), which convert traditional telephone signals into digital data packets that can be transmitted over IP networks. The broader terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the delivery of voice and other communication services, such as fax, SMS, and voice messaging, over the Internet, in contrast to the traditional public switched telephone network (PSTN), commonly known as plain old telephone service (POTS) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VoIP Phone
A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet. This is in contrast to a standard phone which uses the traditional public switched telephone network (PSTN). Digital IP-based telephone service uses control protocols such as the Session Initiation Protocol (SIP), Skinny Client Control Protocol (SCCP) or various otheproprietary protocols. Types VoIP phones can be simple software-based softphones or purpose-built hardware devices that appear much like an ordinary telephone or a cordless phone. Traditional PSTN phones can be used as VoIP phones with analog telephone adapters (ATA). A VoIP phone or application may have many features an analog phone doesn't support, such as e-mail-like IDs for contacts that may be easier to remember than names or phone numbers, or easy sharing of contact lists among multiple accounts. Generally the features of VoIP phones follow those of Skype and other PC-b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inter-Asterisk EXchange
Inter-Asterisk eXchange (IAX) is a communications protocol native to the Asterisk private branch exchange (PBX) software, and is supported by a few other softswitches, PBX systems, and softphones. It is used for transporting voice over IP telephony sessions between servers and to terminal devices. The original IAX protocol is deprecated and has been superseded by a second version, commonly called IAX2. The IAX2 protocol was published as an informational (non-standards-track) RFC 5456 by discretion of the RFC Editor in February 2010. Basic properties IAX is a binary-encoded voice over Internet protocol (VoIP) that is used for streaming media, but is primarily designed for IP voice calls. IAX uses a single User Datagram Protocol (UDP) data stream and port number, by default 4569, between endpoints for both session signaling and media payloads. This feature provides benefits for traversing network address translators at network boundaries, as it simplifies firewall config ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone
A telephone, colloquially referred to as a phone, is a telecommunications device that enables two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via Electrical cable, cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from and (, ''voice''), together meaning ''distant voice''. In 1876, Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable in business, government, and in households. The essential elements of a telephone are a microphone (''transmitter'') to speak into and an earphone (''receiver'') which reproduces the voice a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Session Initiation Protocol
The Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications. SIP is used in Internet telephony, in private IP telephone systems, as well as mobile phone calling over LTE (telecommunication), LTE (VoLTE). The protocol defines the specific format of messages exchanged and the sequence of communications for cooperation of the participants. SIP is a text-based protocol, incorporating many elements of the Hypertext Transfer Protocol (HTTP) and the Simple Mail Transfer Protocol (SMTP). A call established with SIP may consist of multiple media streams, but no separate streams are required for applications, such as text messaging, that exchange data as payload in the SIP message. SIP works in conjunction with several other protocols that specify and carry the session media. Most commonly, media type and parameter negotiation and media setup are performed with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USB Phone
A USB phone looks like a traditional telephone, but it has a Universal Serial Bus, USB connector instead of an RJ11, RJ14, RJ25, RJ-11. It may be used with most softphones and services like Sipnet, Sippoint Mini, Net2Phone, NetMeeting, and Xlite. In 2005 XS4ALL Internet BV (the first public internet provider in the Netherlands) supplied all of its DSL users with a USB VOIP Phone, it the idea of Donar Alofs and built by Philips. It came with a browser plugin and people could make and receive calls via this USB Phone via an internet website (webphone.xs4all.nl). Later on, people got DSL modems with RJ-11 VoIP ports and RJ-45 ISDN ports, later the DSL modem/routers were also built-in DECT for making calls with traditional phones. In 2009, Polycom introduced the CX300 USB phone, optimized for Microsoft Office Communications Server 2007 R2. In its second release (CX300 R2), this USB phone operates as a Plug and play, plug-and-play device with Skype for Business, Microsoft Lync 2013, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chatcord
A Chatcord is a compact device that connects the duplex audio stream between a sound card of a computer, and the telephone-set. It enables the use of a Plain Old Telephone System (POTS) to talk via the Internet away from the computer, after a connection is established from the desktop using your specific softphone (such as MSN or Skype). A number of compact devices exist, as well as many do-it-yourself web pages where instructions for assembling one are given. See also * Acoustic coupler In telecommunications, an acoustic coupler is an interface device for coupling electrical signals by acoustical means—usually into and out of a telephone. The link is achieved through converting electric signals from the phone line to so ... External links *https://web.archive.org/web/20061127044532/http://walle.nerdhero.org/chatcord/: Chatcord DIY *https://web.archive.org/web/20160330064718/http://www.chat-cord.com/: Chatcord website.http://www.grynx.com Another DIY Chatcord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of SIP Software
This list of SIP software documents notable software applications which use Session Initiation Protocol (SIP) as a voice over IP (VoIP) protocol. Servers Free and open-source license A SIP server, also known as a SIP proxy, manages all SIP calls within a network and takes responsibility for receiving requests from user agents for the purpose of placing and terminating calls. * Asterisk * ejabberd * FreeSWITCH * GNU SIP Witch * Kamailio, formerly OpenSER * Mobicents Platform (JSLEE 1.0 compliant and SIP Servlets 1.1 compliant application server) * OpenSIPS, fork of OpenSER * SailFin * SIP Express Router (SER) * Enterprise Communications System sipXecs * Yate Proprietary license * 3Com VCX IP telephony module: back-to-back user agent SIP PBX * 3CX Phone System, for Windows, Debian 8 GNU/Linux * Aastra 5000, 800, MX-ONE * Alcatel-Lucent 5060 IP Call server * Aricent SIP UA stack, B2BUA, proxy, VoLTE/RCS Client * AskoziaPBX * Avaya Application Server 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile VoIP
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, 4G, or 5G protocols. There are several methodologies that allow a mobile handset to be integrated into a VoIP network. One implementation turns the mobile device into a standard SIP client, which then uses a data network to send and receive SIP messaging, and to send and receive RTP for the voice path. This methodology of turning a mobile handset into a standard SIP client requires that the mobile handset support, at minimum, high speed IP communications. In this application, standard VoIP protocols (typically SIP) are used over any broadband IP-capable wireless network connection such as EVDO rev A (which is symmetrical high speed — both high speed up and dow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auto Dialer
In computer telephony an automatic dialler (shortened to an auto-dialler or more simply in context just a dialler, and also known as an outbound dialler) is a computer system that makes outgoing calls from a call centre to customers from call agents based upon a loaded list of contacts. Whereas automatic call distribution (ACD) distributes ''inbound'' calls to a call centre amongst its agents, an auto dialler makes ''outbound'' calls and comes in several forms. Auto diallers are responsible for providing management information to call centre operators, including how many outbound calls each agent has handled. In more sophisticated computer telephony systems, a single system handles both ACD of inbound calls and dialling of outbound calls, allowing agents to be switched between the two as traffic volumes require. In their earlier forms, diallers would be proprietary standalone systems that connected directly to a private branch exchange or even to the public switched telephone net ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Telephony Integration
Computer-telephony integration, also called computer–telephone integration or CTI, is a general term for technologies that coordinate interactions between telephones and a computers to be coordinated. The term is predominantly used to describe desktop-based applications that improve user efficiency, though it can also refer to server-based functionality such as automatic call routing Routing is the process of selecting a path for traffic in a Network theory, network or between or across multiple networks. Broadly, routing is performed in many types of networks, including circuit-switched networks, such as the public switched .... See also * Automatic number identification (ANI) * Automatic call distributor * Dialed Number Identification Service (DNIS) * PhoneValet Message Center * Predictive dialer * Screen pop * Telephony Application Programming Interface (TAPI) * Telephony Server Application Programming Interface (TSAPI) * Computer-supported telecommunication ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
