1. GB/T 15381-94 Electrical and Audio Requirements for the Conference Systems is equal to IEC 914 Conference Systems - Electrical and audio requirements (Referring to GB/T 15381-94 Electrical and Audio Requirements for the Conference Systems) .

2. IEC 914 was converted to IEC 60914 in 1997. In 1997, all the IEC standards had numbers in the range 60000–79999 based on the suggestion from the Joint Technical Advisory Board (JTAB). The numbers of older IEC standards were converted by adding 60000, for example IEC 34-1became IEC 60034-1. (Referring to Introduction to ISO, IEC and ITU)