电话卡破解的方法，主要是针对移动联通的公用电话的-Phone card to crack the method, mainly for mobile telephones of Unicom

联通视频监控技术规范，包括中心平台技术要求，编解码功能，前端设备、客户端要求等-China Unicom video surveillance technical specification, including center platform technical requirements for encoding and decoding functions, front-end equipment, client requirements, etc.