In this paper, we describe the formatting guidelines for IJCA Journal Submission. A digital public address (PA) system which is capable of multi-zone and text-to-speech (TTS) broadcasting functions for campus broadcasting. The digital PA system can achieve environmental broadcasting requirement which means different broadcasts for multiple zones at the same time and it cannot cause noise to other zones. The emergency broadcasting is major considered functionality for the modern digital PA systems. Digital PA system is very suitable for language listening training. ITTP is used to address key Voice over Internet Protocol (VoIP) requirements and solve the problems resulting from Real Time Protocol(RTP) /User Datagram Protocol(UDP). The Comparison shows that Internet Telephony Transport Protocol (ITTP) gives better performance compared with RTP/UDP in terms of packet loss, delay and bandwidth usage.

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Ittp Rtp Udp Voip