A PABX, or Private Atonomous Branch Exchange, is preferred by businesses because it is a self-managed automated telephone switching system. For example, the relavance of this technology can be viewed in the context of automatic call distribution, call forwarding, and voicemail. PABX systems, in the same way as other automated systems, enables multi-channel communication that can be further extended to people outside the business. In a busy office working environment, a PABX system transfers a large volume of calls quickly and accurately to the targeted recipients. Customer service and relations also benefits from other business processes automation, for instance, the PABX system can integrate with CRM systems, to enhance service and communication quality. Due to its efficiency in enabling communication and information dissemination, it is an important tool for communication management in all types of businesses regardless of their size.