IP telephony is a general term for the technologies that use the Internet Protocol’s packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user. However, it delivers a lot of benefits over legacy pone systems including:
- Eliminates IDD and local call charges across offices via the corporate data network of Internet
- If under the LAN environment equipped with structural cabling system, Move, add and changes (MAC) of phone
users are very easy without the need to wire phone cables every time.
- Calling and receiving calls using mobile phone and desktop application (Soft Phones) users can be equipped with call application on their mobile phone or laptop which are seamlessly integrated with their desk phones.
- Since IP Telephony, like Avaya, is an open PBX system which can easily integrate with other communication, business systems and application such as Microsoft Outlook, Microsoft Teams, and Lifesize Video etc.to achieve highest user friendliness.
- Some of the latest IP Telephony solution are very software oriented, which offer customers wide deployment options such as on-premises approach, hosted PBX approach according to individual customer need.
- A good and open IP Telephony platform shall come with expansion path to contact call with minimal add-on