Design of video indoor phone of Android building intercom system

摘要

Android building intercom system has several advantages,such as open source,low cost,good expansibility and compatibility,great UI (User Interface),etc.It has broad application prospects in building intercom field.The paper presents an architecture for a video indoor phone of android building intercom system using Android and JNI (Java Native Interface) technology.The architecture contains two layers,upper layer and lower layer.Upper layer is signaling control layer and SIP (Session Initiation Protocol) protocol is utilized to complete signaling control.Lower layer is realization layer,RTP (Realtime Transport Protocol) transport module,media and other modules are used to do concrete actionsspecified from upper layer signaling.