(亦作Touch-Tone)
1
- (of a telephone) having push-buttons and generating tones to dial rather than pulses（电话）按钮式拨号的。
1.1
- (of a service) accessed or controlled by the tones generated by these telephones拨号服务的。
1
- trademark a telephone of this type〈商标〉按钮式电话。
1.1
- one of the set of tones generated by these telephones按钮式电话机发出的声音。