This handler is responsible for processing the timeout situation and handling it with the correct subsequent TCAP messaging and, if necessary, terminating the call.
这个处理程序负责处理超时情况并使用正确的后续TCAP消息传递处理它，如果必要，终止调用。
SIP supports five facets of establishing and terminating multimedia communications: user location, capabilities and availability, call setup and call handling.
SIP支持建立和终止多媒体通信的五个方面：用户定位、能力与可用性、通话建立和通话处理。
SIP supports five facets of establishing and terminating multimedia communications: user location, capabilities and availability, call setup and call handling.
SIP支持建立和终止多媒体通信的五个方面：用户定位、能力与可用性、通话建立和通话处理。
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