For example, while setting up or tearing down a connection, SIP services can also implement call blocking or forwarding, as well as interface with gaming and back office systems.
举例来说，当建立或拆开连接时，SIP服务还可以实现调用的阻塞或转发，以及带有对策和事务部门系统的界面。
For example, while setting up or tearing down a connection, SIP services can also implement call blocking or forwarding, as well as interface with gaming and back office systems.
举例来说，当建立或拆开连接时，SIP服务还可以实现调用的阻塞或转发，以及带有对策和事务部门系统的界面。
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