接入电话网的电话机和其它设备上用于发号的数字、字母和符号规定接入电话网的电话机和其它设备上用于发号的数字、字母和符号规定Arrangement of digits,letters and symbols on telephones and other devices that can be used for gaining access to a telephone network
Arrangement of digits, letters and symbols on telephones and other devices that can be used for gaining access to a telephone network
在电话和其他可用于接入电话网络的设备上排列数字、字母和符号