通信网

communication network communications network net  detail>>

稀路由通信业务量

thin route traffic  detail>>

备用通信网

airernate communication net alternate communication net  detail>>

本地通信网

lcn:local communication network  detail>>

测控通信网

communication network for tracking and command system  detail>>

长途通信网

toll network trunk network  detail>>

大区通信网

regional network  detail>>