Telephone exchange system
First Claim
1. A telephone exchange system comprising:
- a plurality of exchange sub-systems;
a plurality of terminals directly connected to at least two of said exchange sub-systems by two lines so as to execute communication operation in cooperation with call connection control of said exchange sub-systems connected thereto; and
means for selecting one of said exchange sub-systems for one of said terminals connected thereto when a call is connected to said one of said terminals according to one of (1) information determined prior to said call and (2) a current condition of said telephone exchange system.
2 Assignments
0 Petitions
Accused Products
Abstract
A telephone exchange system useful for a bank or brokerage house speech system or the like, which can accommodate a large number of lines (or trunks) and permit improvement of the reliability and call connection processing capacity. The system comprises exchange sub-systems A (EX-A) and B (EX-B) capable of independently executing an exchange operation and each accommodating a terminal. The terminal, on the other hand, has a speech channel switch for connecting a speech channel including a handset to either exchange sub-system A (EX-A) or B (EX-B). When a process of connecting a call is brought about in the terminal, that terminal selects one of the exchange subsystems and controls the speech channel switch for connecting the call to the selected exchange sub-system.
15 Citations
17 Claims
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1. A telephone exchange system comprising:
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a plurality of exchange sub-systems; a plurality of terminals directly connected to at least two of said exchange sub-systems by two lines so as to execute communication operation in cooperation with call connection control of said exchange sub-systems connected thereto; and means for selecting one of said exchange sub-systems for one of said terminals connected thereto when a call is connected to said one of said terminals according to one of (1) information determined prior to said call and (2) a current condition of said telephone exchange system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A telephone exchange system consisting of a plurality of exchange sub-systems and a plurality of terminals directly connected to at least two of said exchange sub-systems by communication lines, wherein
A) each of said terminals comprising: -
1) at least one handset provided with a speaker and a receiver, 2) selecting means for connecting said handset to any one of said communication lines, 3) control means for connecting said selecting means for selectively connecting said at least one handset to any one of said communication lines in order to establish a communication route, B) each of said exchange sub-systems comprising; 1) a plurality of trunks for executing a connection to lines of another telephone exchange system, 2) a switch means connecting one of said terminals to one of said trunks in order to set a call, wherein said one of said terminals is selectively connected to one of said exchange sub-systems when said call is carried out. - View Dependent Claims (11)
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12. A telephone exchange system comprising a plurality of exchange sub-systems and a plurality of terminals directly connected to at least two of said exchange sub-systems through communication lines, wherein
A) each of said exchange sub-systems comprising: -
1) an incoming call information sending out means for sending out, when an incoming call is detected, an incoming call information indicating said incoming call to one of said terminals to which said incoming call is directed, and 2) a switch means connecting said one terminal for executing a telephone connection, and B) each of said terminals comprising; 1) a receiver means for receiving said incoming call information, 2) a plurality of answering means for answering said incoming call received, 3) indicating means correspondingly provided to said answering means to visually indicate that said incoming call is being received, 4) at least one handset having a speaker and a receiver, 5) a selection means for connecting said at least one handset to any one of said communication lines, and 6) a control means for indicating that an incoming call is being received on said indicating means based on incoming call information received by said receiving means, and for controlling said selection means when an answer from said answering means is detected, and for connecting to any one of said exchange sub-systems that sent said incoming call information with said at least one handset, and wherein one of said terminals is selectively connected to said any one of said exchange sub-systems when a call is carried out. - View Dependent Claims (13, 14, 15)
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16. A telephone exchange system comprising a plurality of exchange sub-systems and terminals directly connected to at least two of said exchange sub-systems through communication lines, wherein
A) each of said terminals comprises: -
1) a plurality of handsets provided with a speaker and a receiver, 2) a selection means for connecting said handsets to any one of said communication lines, 3) a plurality of outgoing call means for executing an outgoing call, 4) memory means for memorizing information and for selecting an appropriate one of said exchange sub-systems to execute said outgoing call when said outgoing call is executing, 5) sending out means for sending out an outgoing call information indicating said outgoing call to said corresponding exchange sub-system when said outgoing call is executing, and 6) control means for controlling, upon recognition of a demand for said outgoing call from one of said outgoing call means, said sending out means to select one of said plurality of handsets, and sending an outgoing call information including information of said selected one of said handsets to said corresponding exchange sub-system which is selected after referring to said memory means, and B) each of said exchange sub-systems comprises; 1) receiving means for receiving said outgoing call information, and 2) switch means for freely setting a call according to said outgoing call information that said receiving means receives, and wherein one of said terminals selects one of said exchange subsystems during a telephoning and is connected thereto. - View Dependent Claims (17)
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Specification