At present , we can track the signaling links in the 155 mbs ports of a switch only by using the signaling of the switch itself rather than the external analyzer of the ccs 7 . this causes inconvenience to maintenance . it is expected that manufacturers will enhance the tracking and monitoring functionality of their products and training switching and maintenance personnel concerning routine maintenance of the 155 mbs port 目前,我们只能利用交换机本身的信令观察手段对交换机155mbits端口中的信令链路进行跟踪、分析,而不能通过外挂七号信令分析仪对信令进行监测,给维护工作带来了不便,有待于生产交换机的厂家加强这方面的功能。