然后，为了能访问到呼叫方和被叫方的地址信息，电话局向信令网关发一个SS7消息。
The central office then sends an SS7 message to a signaling gateway in order to get access to calling and called address information.
针对上述问题，作者设计并实现了一种通用型电话网局间信令收发器。
To above-mentioned problem, author designed and realized a general telephone exchange office signaling transceiver.
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.
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.
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