Hopeiker 3A digital IP hybrid PBX system adopts softswitch core technology to support local access to analog and IP phone users, and remote access to analog users under IP phone or IAD using IP network, realizing mixed network of analog and IP phone, and connecting to PSTN or private network voice switching equipment through analog outside line and broadband SIP trunk, integrating rich communication functions, excellent voice quality and optimal transmission, effectively improving user deployment and communication efficiency, and helping users to improve value.