The IP PBX module offers VOIP (Voice Over Internet Protocol) and SIP (Session Initiation Protocol) based Private Branch Exchange (PBX) solution. You can easily implement any IP based PBX to route calls from one user to another within your network domain. Besides you can also send and receive IMs (Instant Messages). It works as an IP PBX server. The users can get registered simply with their mobiles or any other soft phones after proper authentication. Moreover, you are at the liberty of creating unlimited SIP accounts and Extensions to accommodate as many users as you want. So, you get a cost-effective and reliable tool with utmost support for your network’s scalability.