Calling and answering in the telex network with automatic terminal equipment
自动终端设备在电传网络中的呼叫和应答

1988-11-25

Calling and answering in the telex network with automatic terminal equipment
自动终端设备在电传网络中的呼叫和应答

1988-11-25

Automatic answering equipment and general procedures for automatic calling equipment on the general switched telephone network including procedures for disabling of echo control devices for both manually and automatically established calls
自动应答设备和通用交换电话网络上自动呼叫设备的一般程序 包括手动和自动建立呼叫的回声控制设备禁用程序

1996-10-18

Automatic answering equipment and general procedures for automatic calling equipment on the general switched telephone network including procedures for disabling of echo control devices for both manually and automatically established calls
自动应答设备和通用交换电话网络上自动呼叫设备的一般程序 包括手动和自动建立呼叫的回声控制设备禁用程序

1996-10-18

Automatic answering equipment and general procedures for automatic calling equipment on the general switched telephone network including procedures for disabling of echo control devices for both manually
自动应答设备和通用交换电话网络上自动呼叫设备的一般程序 包括手动禁用回声控制设备的程序

2001-07-29

Automatic answering equipment and general procedures for automatic calling equipment on the general switched telephone network including procedures for disabling of echo control devices for both manually
自动应答设备和通用交换电话网络上自动呼叫设备的一般程序 包括手动禁用回声控制设备的程序

2001-07-29