Public Switched Telephone Network (PSTN) - Category II specification for 2400 bits per second duplex modems standardized for use on the PSTN; English version ETS 300117:1996
公共交换电话网（PSTN）.在PSTN上使用的标准化2400比特/秒双工调制解调器的II类规范；英文版ETS 300117:1996

1997-08-01

2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits
每秒2400位的双工调制解调器 使用回声消除技术 标准化用于一般交换电话网络和点对点双线租用电话类型电路

1988-11-25

2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2-wire leased telephone-type circuits
每秒2400位的双工调制解调器 使用回声消除技术 标准化用于一般交换电话网络和点对点双线租用电话类型电路

1988-11-25

在普通电话交换网和点对点二线租用电话型电路上使用标准化的回波抵消技术的2400比特/ 秒双工调制解调器
2400 bits per second duplex modem using the echo cancellation technique standardized for use on the general switched telephone network and on point-to-point 2 wire leased telephone-type-circuits

1988-06-30