In recent years, the company by telephone to sell products or do an increasing proportion of corporate propaganda, many companies have built their own CALL center, but there are a lot of companies through lease-seat, no matter which way the call center business business needs is a rising trend. Meanwhile, the company for the cost of the call center also requires a lower, in particular to the working agent is in decentralized model. IP call center is different from traditional switches, industrial card mode call center, the call can be more system cost savings, especially in distributed systems internal calls. Excellent Shikang IP call center system is based on UC9000 integrated business platform, internal seating system call can be connected through the IP protocol, outgoing calls can be E1 or analog trunk AT0. Intercom connection via IP network, can be used as office administration telephones; outbound sales is mainly used for product or service, or a company phone promotion and so on. Telephone sales, life insurance, agents increasingly decentralized in major cities nationwide office, branch offices and branch offices, or contact with the head office, which is a lot of money spending. IP call center system via SIP protocol to connect around the points to form the Bureau call network, can also be at various points out the original way, to maintain the original layout of the network, make full use of the existing network resources.