传统电话业也称电话业，是与移动电话业、互联网电话业相对而言的一种电信产业。
Traditional telephone industry also known as the telephone industry, with mobile phone industry, the Internet telephone industry is relatively a telecommunications industry.
从市场情况来看，电信业的竞争正在加剧，PSTN（公共交换电话网络）、CATV（有线电视网）、ATM和IP（数据网）都在相互窥视对方的传统市场。
According to the circumstances of the market, the competition of the telecom vocation is intensifying, the operators of PSTN, CATV, ATM and IP networks are peeking at others traditional markets.
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