Search results
Results from the WOW.Com Content Network
Early-1970s Telephone Exchange model TESLA Automatic system Early model 464G Western Electric key telephone set. 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).
QSIG has two layers, called BC (basic call) and GF (generic function). QSIG BC describes how to set up calls between PBXs. QSIG GF provides supplementary services for large-scale corporate, educational, and government networks, such as line identification, call intrusion and call forwarding. Thus for a large or very distributed company that ...
The standard defines two sides of the interface, the trunk circuit and the signaling unit. The trunk circuit is normally the side to which the PABX is connected. The signaling unit is the special modem that converts the DC signaling protocol into tones that could be transmitted over a four-wire link back to the PTT exchange.
FreePBX is a web-based open-source graphical user interface (GUI) that manages Asterisk, a voice over IP (VoIP) and telephony server. [2]FreePBX is licensed under the GNU General Public License version 3, [3] with commercial modules available under their own licenses.
The IBM 1750, 2750 and 3750 Switching Systems were telephone exchange systems produced by IBM from the 1960s to the 1990s.. IBM engineers in the IBM La Gaude Research Laboratory, north-west of Nice in France, developed an electronic Private Automatic Branch Exchange: the first stored-program-controlled PABX to be marketed and installed in the world.
It is a common misconception that TAPI 3.0 (or TAPI 3.1) replaces TAPI 2.x.. TAPI 2.x and earlier versions were written in C; the API uses pointers to structures.. Consequently, TAPI 2.x is easy to access from C or C++ applications, but it can be awkward to use from many other programmi
An IP PBX ("Internet Protocol private branch exchange") is a system that connects telephone extensions to the public switched telephone network (PSTN) and provides internal communication for a business.
A SIM operated deskphone is a home or office-based deskphone that operates using a mobile SIM card. Connecting to a 3G/GSM virtual Private Automated Branch Exchange (PABX) network set up by a mobile operator, a SIM operated deskphone combines the features and flexibility of a mobile phone with the functionality of a traditional deskphone.