Signalling system and signal control equipment for multi-address calling
First Claim
1. A signalling system for multi-address calling for transmitting the same information from an originating terminal to a plurality of destination terminals, in which a control signal related to the plurality of destination terminals, which is transmitted and received between the originating terminal and an exchange, is composed of:
- a synchronize signal for detecting the beginning of the control signal;
a function determination field for indicating that the control signal is any one of at least a selection signal, a call accepting state indication signal, and a data receiving state indication signal; and
a terminal appointing field in which respective one bit time slots are assigned to each of the destination terminals in a predetermined order so that the signal set in the function determination field is allotted as a result of one bit appearing in said respective time slot.
2 Assignments
0 Petitions
Accused Products
Abstract
A signalling system for multi-address calling and a signal control equipment therefor in which a control signal starts with a synchronize signal, followed by a function determination field indicating that the control signal is any one of a selection signal, a call accepting state indication signal and a data receiving state indication signal, the function determination field being followed by a terminal appointing field in which the signal, set in the function determination field is provided bit by bit in a predetermined order for each destination terminal. Circuit arrangements for transmitting and receiving such a control signal are provided as signal control equipments both on the side of an originating terminal and on the side of an exchange.
18 Citations
9 Claims
-
1. A signalling system for multi-address calling for transmitting the same information from an originating terminal to a plurality of destination terminals, in which a control signal related to the plurality of destination terminals, which is transmitted and received between the originating terminal and an exchange, is composed of:
-
a synchronize signal for detecting the beginning of the control signal; a function determination field for indicating that the control signal is any one of at least a selection signal, a call accepting state indication signal, and a data receiving state indication signal; and a terminal appointing field in which respective one bit time slots are assigned to each of the destination terminals in a predetermined order so that the signal set in the function determination field is allotted as a result of one bit appearing in said respective time slot. - View Dependent Claims (2, 3)
-
-
4. A signal control equipment for multi-address calling which is provided on the side of an originating terminal for transmitting and receiving between the originating terminal and an exchange a control signal composed of a synchronize signal, function determination information indicating the kind of the control signal, and terminal appointing information comprising a terminal appointing field in which respective one bit time slots are assigned to each of a plurality of destination terminals in a predetermined order so that the signal set in the function determination field is allotted as a result of one bit appearing in said respective time slot, the signal control equipment comprising:
-
a transmitting circuit composed of a synchronize signal setting circuit for generating the synchronize signal, a first function determination information holding circuit for holding the function determination information, a first terminal appointing information holding circuit for holding the terminal appointing information, and a circuit for sequentially sending out, bit by bit, the synchronize signal, the function determination information, and the terminal appointing information; a receiving circuit composed of a circuit for detecting the synchronize signal transmitted from the exchange, a circuit for sequentially receiving the channel signal transmitted from the exchange on the basis of the detection of the synchronize signal, a second function determination information holding circuit for holding the received function determination information, and a second terminal appointing information holding circuit for holding the received terminal appointing information; means for setting the function determination information in the first function determination information holding circuit; terminal appointing means provided to have one-to-one correspondence to the plurality of destination terminals for setting the terminal appointing information in the first terminal appointing information holding circuit; function determination information display means for displaying the function determination information held in the second function determination information holding circuit; and terminal indicator means provided to have one-to-one correspondence to the plurality of destination terminals for indicating, bit by bit, the terminal appointing information held in the second terminal appointing information holding circuit. - View Dependent Claims (5, 6, 7)
-
-
8. A signal control equipment for multi-address calling which is provided on the side of an exchange for transmitting and receiving, between the exchange and an originating terminal, a control signal composed of a synchronize signal, function determination information indicating the kind of the control signal, and terminal appointing information comprising a terminal appointing field in which respective one bit time slots are assigned to each of a plurality destination terminals in a predetermined order so that the signal set in the function determination field is allotted as a result of one bit appearing in said respective time slot, the signal control equipment comprising:
-
a transmitting circuit for transmitting the control signal; a receiving circuit for receiving the control signal; storage means including an address storage area for storing the addresses of the plurality of destination terminals registered corresponding to the originating terminal and a bit appointing storage area for storing information such as a request for calling each destination terminal; bit appointment setting means for setting, bit by bit, the terminal appointing information of the control signal received by the receiving circuit in the corresponding one of the bit appointing storage areas of the storage means; and readout means for reading out the storage means concurrently with reading out of the destination terminal address corresponding to the bit of each bit appointing storage area. - View Dependent Claims (9)
-
Specification