市场上销售的电话机种类很多,最常用的有按键普通电话机、录音电话机和无绳电话机。另外,在此基础上又加入了特殊功能(如防盗功能、来电显示功能等),用户可根据自己的实际需要购买。当用户选用电话机时,一定要注意电话机是否具有入网标志。只有具有入网标志的电话机才能证明此型号已取得国家的入网资格。通常,国家技术监督局每年都要对电信终端类产品进行产品季度抽查。用户选用时应注意:在电话机的包装盒上都应标有生产厂商、话机型号、产品名称、商标及话机颜色;当观察电话机的外表面时不应有损伤、毛刺、凹凸不平或裂纹;用手指按电话 There are many types of telephones available on the market, the most commonly used are regular telephones, recording telephones and cordless telephones. In addition, on this basis, has added special features (such as anti-theft features, caller ID features, etc.), users can purchase according to their actual needs. When users choose the phone, be sure to pay attention to whether the phone has a network logo. Only phones with an access badge can prove that this model has acquired national access. In general, the State Bureau of Technical Supervision conducts quarterly checks on the products of telecommunications terminals each year. Users should pay attention to the selection: the phone box should be marked with the manufacturer, phone model, product name, trademark and phone color; when the outer surface of the phone should not be damaged, burr, bump or crack Press your finger on the phone