摘要:
1.2.1 Access network DSL 连接 DSLAM,类似拨号上网,占用电话线路。 客户端:splitter seoarates the data and telephone signals arriving to the home and forwards the data sign 阅读全文
posted @ 2018-10-31 05:40
森淼clover
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摘要:
1. hierarchy of public telephone network’s architecture Telephones (Phones): Users: homes, businessesEnd offices (Switching offices): Connect to phone 阅读全文
posted @ 2018-10-31 05:36
森淼clover
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