SOT600-IPPBX Rongxin Unified Communication is a network and telephone integrated IP switch, feature rich and innovative IPPBX equipment, and also a device for telephone to network transmission. It adopts a hardware platform and utilizes robust system resources to provide users with a unified solution that integrates voice, video, recording, messaging, and fax business needs SOT600-IPPBX integrates leading industrial features, with easy installation and deployment, stable and reliable operation, and high cost-effectiveness, making it an ideal choice for small and medium-sized enterprises. SOT600-IPPBX does not support emergency call services. Capacity: FXO analog relay 8-32+PCM digital relay 30B+D/PRI (1-2)+16-768 SIP user extension licenses.