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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 [1]
SIP Witch is released as free software under the terms of version 3 or later of the GNU General Public License (GPL). It is designed for Linux, macOS, BSD and Windows and planned support for Android. [1] In the popular Linux distributions Ubuntu and Fedora it may be installed directly from the standard package sources. [2] [3]
The FreeSWITCH project was initially announced in January 2006 and the first version was officially released in May 2008. The subsequent versions, 1.2, 1.3 and 1.4, were released in 2012 and 2014 supporting SIP over Websocket and WebRTC. The 1.6 version supported video transcoding and video conferencing and the 1.8 version was released in 2018.
JsSIP uses the SIP over WebSocket transport for sending and receiving SIP requests and responses, and thus, it requires a SIP proxy/server with WebSocket support. Currently the following SIP servers have been tested and are using JsSIP as the basis for their WebRTC Gateway functionality:
These two extensions allow users to specify their preferences about the service the IMS provides. With the caller preferences extension, [8] the calling party is able to indicate the kind of user agent they want to reach (e.g. whether it is fixed or mobile, a voicemail or a human, personal or for business, which services it is capable to provide, or which methods it supports) and how to search ...
The college experienced two more name changes, becoming Chicago State College in 1967 and Chicago State University in 1971, a year before moving to a new campus. By the mid-1960s the college's infrastructure was deteriorating and tensions between the majority white student body and the mostly black surrounding neighborhood were on the rise.
MicroSIP is a lightweight, open-source software application that enables users to make Voice over IP (VoIP) calls using the SIP (Session Initiation Protocol) standard. It is designed to be simple, easy to use, and resource-efficient, making it an ideal choice for low-resource devices, such as older computers, and for users who need a minimalistic VoIP client.
VaxTele SIP Server SDK (Software Development Kit) is a complete development toolkit, which allows software vendors and Internet telephony service providers (ITSP) to develop SIP Server and (SIP) Session Initiation Protocol based VoIP systems for Microsoft Windows to install computer to computer voice chat, chat rooms, IVR systems, call center services, calling card services, dial/receive ...