T103测试线用于长途局间中继线上所有监控和信令功能测试。
The T103 is used for the overall testing of supervisory and signaling features on inter - toll trunks.
可通过 信令链路将 信令消息，比如用于呼叫建立、 查询和应答监控消息以及话务量控制， 从网络中的一个 SS7 节点路由到另一个 SS7 节点。
Signaling messages such as supervisory messages for call setup, query and reply and traffic control, will be routed through the signaling links from one SS7 node to another SS7 node in the network.
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