High - definition television and mobile reception should not be made mandatory at the initial stage of implementation of dtt so as to allow more operational flexibility for multi - plex operators ( paragraph 4 . 22 ) 在推出数码地面电视的初期,不应强制推行高解像电视或移动接收服务,以便数码频道营办商在运作上可以有较大弹性(第4