IP PBX or Internet Branch Private Branch Exchange is a PABX that uses IP technology. IP PBX is a telephone and data communication switching device based on Internet Protocol (IP) technology that controls analog telephone extensions (TDM) and IP Phone extensions. Functions that can be carried out include connection, control and termination of telephone connections; communication protocol translation; communication or transcoding media translation; and controlling IP Telephony devices such as VoIP Gateway, Access Gateway, and Trunk Gateway.
IP PBX based solutions are the concept of future generation communication networks or known as NGN (Next Generation Network) that can integrate conventional telephone networks (PSTN / POTS), mobile telephone networks (GSM / CDMA), satellite telephone networks, Cordless networks (DECT ), and packet-based (IP / ATM) networks.

Permana's IP PBX offer a range of bussiness-grade services and advanced capabilities that can be tailored to meet the needs of any organization, regardless of its size, industry or location These multi-services are Voicemail & Voice Conference, Interactive Voice Response (IVR), Automatic Call Distribution (ACD), Computer Telephony Integration (CTI), Unified Messaging System (UMS), Fax Server & Fax on Demand, Call Recording System, Billing System, and Web-based Management System.