目前,电话业发展很快,电话数量的普及面也不断加大,电话正向着商业化、私人化、保密性方面发展。如此同时,社会上非法并机偷打他人电话的现象日益增多,常有从未使用过长途话务的电话户主面对高额长途电话帐单而愤愤不平的事发生。最近由国营成都中亚无线电厂设计所研制的电话保护器已问世。该电话保护器已申请专利,专利申请号为93239565-1。该产品现在正由中亚嘉华电器厂制造,已小批量投放市场,受到用户欢迎,用户反映性能良好,稳定可靠。预计1994年将对该产品进行批量生产并投放市场。 At present, the telephone industry has developed rapidly, and the popularization of the number of telephones has also been steadily increasing. The telephone industry is developing towards commercialization, privatization and confidentiality. At the same time, there has been an increase in the illegal unlawful simultaneous beating of other people’s phones in the community. Often there are frequent indignities faced by telephone owners who have never used long-distance calls in the face of high-cost long-distance telephone bills. The phone protector, recently developed by the state-run Chengdu Central Asia Radio Station Design Institute, has come out. The phone protector has applied for a patent, patent application number is 93239565-1. The product is now being manufactured by Central Asia Jiahua Electric Appliance Factory. It has been put on the market in small batches and is welcomed by users. Users reflect good performance and are stable and reliable. The product is expected to be mass-produced and put on the market in 1994.