US 5,426,692 A · Communication terminal and the method using the same

Abstract

A communication terminal having an interface to which its components including an analog telephone are connected and which enables communication with another terminal at the other end of a line of the integrated services digital network. A first tone is generated to set the period of time for dialing of the analog telephone, a second tone different from the first tone is generated to set the period of time for connection between the analog telephone and the terminal at the other according to the dialing during the period of time when the first tone is being generated, and a third tone different from the first and second tones is generated to set the period of time for terminating communication using the analog telephone when the connection established during the period of time when the second tone is being generated is cancelled. Each of first, second and third tones generated is output to the analog telephone.

Claims14

Dependent claims

A communication terminal comprising:

tone generating means for generating a ring-back tone;
speaker means for outputting the ring-back tone generated by said tone generating means;
first detecting means for detecting an incoming call from a network;
control means for controlling said tone generating means to generate the ring-back tone for said speaker means in accordance with a detection by said first detecting means;
a digital telephone unit for performing communication of voice data;
and
image communication means for performing communication of image data,
wherein said control means controls image communication control of said image communication means and voice communication control of said digital telephone unit.

5 more elements

Dependencies are inferred from the claim text.

Communication terminal and the method using the same

Life of this patent

Communication terminal and the method using the same

Life of this patent

Abstract

Claims14