我国２００特种电话业务发展前景广阔尤华２“号特种电话业务是语音会台上的一项公用通信网增值业务。、目前在语音平台上已开发的业务有：人工和自动声询业务（１６０业务、１６８业务）、语音信箱业分（１６６业务）、密码记帐长途直拨业务（２００号业务）、电话号码改... Prospects for the Development of 200 Special Telephone Services in Our Country Youyu 2 "special telephone service is a value-added service for public communication networks on the voice conference platform. At present, the services that have been developed on the voice platform include: Manual and Automatic Querying Service (160 Business, 168 business), voice mail industry points (166 business), password billing long-distance direct dialing business (200 business), telephone number change ...