PABX (Private Automated Branch Exchange) is an automatic telephone switching system used by organisations. It connects the internal phone extension to the PSTN through trunk lines. Telephone, fax machine and modem can be incorporated in the PABX system. This system come in different sizes and can be placed at the subscriber’s site. The first generation of PABX starts with manual switchboard. From switchboard, it slowly switches to analog version and then to digital version. The latest PABX is known as IP PBX. IP PBX deploys IP phones by connecting to the companies’ data network. IP PBX is able to make outgoing call via data network to another destination and this is known as VoIP calls. Some of the common features of PABX include Automatic Call Distributor and Interactive Voice Response (IVR). The Interactive Voice Response will process and manage incoming calls and then direct the calls to designated extension. Other capabilities of PABX ...
The IP-PBX system begins by transmit calls over the Internet. Data are transferred in data packet over the network. When the data are received at the recipient's site, it will be translated into traditional calling format which are then connected through standard phone lines. IP-PBX system come with standard telephone feature, where additional features can be added when needed as the organisation grows. A basic IP-PBX system will include an IP-PBX server, SIP or VoIP phones and a VoIP gateway. The IP-PBX server has a similar function of a proxy server. The SIP or VoIP phones can be hardware phone or soft phones. A softphone is software that allows user to talk through VoIP and has interface which allow user to dial numbers on the screen. The most important part of the system is the IP-PBX server. VoIP clients will register SIP addresses with the IP-PBX server using Session Initiation Protocol (SIP) ...
IP-PBX is a complete telephony solution that sends and receives calls through data network using Internet. Organisations are not required to interrupt and change their existing communication infrastructure to use IPPBX. IP-PBX is an electronic switchboard that receives and manages the calls such as routing, holding and forwarding calls that arrives over the Internet. User of IP-PBX can have the choice to have a fully automated attendant or a human receptionist to route incoming calls to internal IP numbers and extensions. IPPBX is entirely digital software based. The hardware purpose is to merely run the program and to transmit the data. IP-PBX is easy to maintain. In a hosted IP-PBX, the maintenances are handled by the provider of the IP-PBX system. Since it doesn’t require a huge investment to install IP-PBX, it allows and aids small and medium enterprise to run more effectively with this complete system. IP-PBX also provides a flexible and ...