UC350 Series IP PBX is a new generation IP PBX for large capacity unified communication solutions. Based on powerful hardware platform, UC350 Series IP PBX includes UC350 and UC350 Pro. UC350 and UC350 Pro support 1,000/5,000 extensions and 100/500 concurrent calls which is integrated voice, video, paging, fax, conference, recording and other useful functions. It also provides four slots which are able to install E1/T1 boards, FXS and FXO boards by hot-plug mode, so that it can be flexibly configured and combined according to the actual use scenarios. It is suitable for helping to build the telephony system of large and medium-sized enterprises, and can meet the branch office needs of large group enterprises and government agencies, helping enterprises and industry customers to establish a convenient and efficient IP telephone system.