PBX implies Private Branch Exchange that is a personal telephone network which can be utilized within any company or office. The users can talk inside their company or office and also the rest of the world by using the PBX system.

1. PBX System for Internal and Worldwide Connections
PBX implies Private Branch Exchange that is a personal telephone network which can be utilized within any
company or office. The users can talk inside their company or office and also the rest of the world by using the
PBX system. Several communication channels are available to connect the PBX to the outside world Integrated
Services for Digital Network (ISDN), Public Switched Telephone Network (PSTN) or using Voice over Internet
Protocol (VoIP). A PBX has the ability to facilitate more phones, extensions and trunks compared to standard
phone lines. Users can enjoy free calls between offices or remote workers across different locations. A PBX
provides for many features, like voicemail, call transfers, interactive voice menus or IVRs, call recording and
automatic call distribution (ACD) and call queues.
PBX phone systems can be hosted or in-house solutions based on your organizations requirements and current
infrastructure. The benefit of these phone systems is having flexibility. Some Hosted systems are Open Source
so can be customized to individual requirements. In-house Systems are dependent on standard proprietary
hardware. These systems are cost effective and easy to change and manage. All the internal phone calls are
routed via present LAN or local area network. Thus a different telephone network is not needed. You can also
build connection with your IP-PBX through available gateways such as ISDN or PSTN because the internal
telephones are routed through the LAN. Voice over IP (VoIP) presents the best alternative and structure for
communication.
An IP phone system will provide access to many features as IP telephony is using the most current standard for
communication such as the Session Initiated Protocol (SIP) a standard used in the trunking system. It is also
easy for a SIP friendly phone to work with an IP PBX using IP standards, there are no limitations in the various
configuration options available to the company. Multiple offices and locations can be easily connected through
this network structure.
There are many different VoIP providers online offering SIP trunk for very cost efficient pricing, much more
effective than conventional PSTN telephone service providers. Internal calls through an IP phone system do not
generate a fee.
Practical benefits of IP telephone system
IP phone systems provide big benefits. A major benefit is for Mobile and Remote workers using smart phones
and mobiles. The team members can be located on road anywhere in the world while still maintaining a
connection to the IP PBX. They can be connected via a smart phone, IP desk phone system or laptop to the
PBX back at the workplace. This way all the phone calls within the company are not chargeable and the
customers will not notice if any employee is inside the workplace or at a worldwide location. Calling for a
meeting become much easier using the IP PBX to host conference calls of up to 32 parties. Being connected
becomes more fluid and functional allowing for a truly mobile workforce.