Apparatus and method for transmitting-receiving CID in a PBX
AssigneeLG-Nortel Co., Ltd.
InventorPil Heon Choi
Life of this patent
Estimating the term…
Abstract
A PBX connected to a public exchange includes a separate caller ID service unit for providing a caller ID and/or a system tone by performing a digital signal process. To display the caller ID on a receiver terminal, or caller ID phone, a line is established with the PBX through general switched telephone network, and a CID received through the line is converted and stored in the caller ID service block mounted with at least one memory through a switching block, under control by a control block. Then, the control block transmits all or part of the stored CIDs to the caller ID phone through the switching block and/or a subscriber line convergency unit.
Claims24
A Private Branch Exchange (PBX) apparatus for transmitting and receiving CID (Caller ID) comprising:
- an Analog Trunk Convergency (ATC) circuit for converging with an exchange in the PBX connected to the exchange;
- a Subscriber Line Convergency (SLC) circuit for transmitting CID and/or data by converging with a subscriber line connected to each port;
- a control circuit for controlling a CID service for the analog trunk and the subscriber line circuits;
- a data path control circuit for controlling data transmission through a data path between the ATC circuit and the SLC circuit;
- a CID service circuit, the CID service circuit including a CID and signal detecting circuit and a CID and signal transmitting circuit that each perform digital signal processing on the CIDs and signals;
- a signal transmitting/detecting circuit for performing signal transmitting and/or detecting through the data path;
- and
- a switching circuit for connecting the data path between the CID service circuit, and the ATC circuit and the SLC circuit, and for selectively switching the data path between the signal transmitting/detecting circuit and the CID service circuit.
An apparatus in a Private Branch Exchange (PBX) for transmitting and receiving a Caller ID (CID) comprising:
- a CID detecting circuit for detecting a system signal and/or a CID received through a highway as a data path connected by a switching block, and storing the signal and/or the CID in a corresponding area per port inside a CID detection memory block;
- a CID transmitting circuit for transmitting the CID to an affected receiver terminal through the highway as the data path;
- a CID detection memory for assigning a memory area to each of subscriber ports of the SLC circuit and storing the signal and/or the CID for a corresponding port;
- a CID transmitting memory for storing a system signal and/or a CID in each port, in order to transmit a predetermined CID to an affected receiver terminal when a ring signal is transmitted to the affected receiver terminal;
- and
- a local control circuit for controlling CID transmission to a corresponding port in a Subscriber Line Convergency (SLC) circuit through a system bus by reading the signal and/or the CID of each port from the CID detection memory,
- wherein the apparatus detects the CID or the system signal for a transmitted or received call at an Analog Trunk Convergency (ATC) circuit and the SLC circuit in the PBX and transmits the detected CID or signal to a receiver terminal.
A method for transmitting and receiving a Caller ID (CID) in a Private Branch Exchange (PBX), the method comprising:
- establishing a line with the PBX through a general switched telephone network;
- converting a CID received through the line, and storing the CID through a switching circuit in a CID service circuit at the PBX that includes at least one memory;
- and
- transmitting all or part of the stored CID to a terminal, through the switching circuit and/or a Subscriber Line Convergency (SLC) circuit and display the CID on the terminal.
A method for transmitting and receiving a Caller ID (CID) in a Private Branch Exchange (PBXD, the method comprising:
- storing CIDs in a first memory in a CID service circuit at the PBX;
- storing preassigned CIDs for transmission out of the stored CIDs in a second memory in the CID service circuit;
- and
- transmitting the preassigned CIDs stored in the second memory to a caller ID terminal through a switching circuit and/or a Subscriber Line Convergency (SLC) circuit.
A method for transmitting and receiving a Caller ID (CID) in a Private Branch Exchange (PBX), the method comprising:
- receiving a ring from a public exchange to an Analog Trunk Convergency (ATC) circuit in a PBX;
- detecting, at a ring detecting block, whether the ring is received, and reporting, at a local control block, the reception of the ring to a system control circuit through a system bus;
- if receiving the ring is reported, connecting, at the system control circuit in the PBX, a highway as a data path of a corresponding port to a highway of a Caller ID (CID) service circuit at the PBX through a switching block;
- detecting, at a CID detecting block, the CID through a highway convergency circuit based on a predetermined signal;
- storing the detected CID in a predetermined area per port in a CID detection memory of the CID service block, through a memory interface block
- if receiving the ring is reported from the ATC circuit, transmitting, at a system control block, a ring transmission message to a local control circuit in a Subscriber Line Convergency (SLC) circuit using a system bus through a system bus control block, and simultaneously, transmitting a system signal and/or a caller ID message;
- if the local control circuit receives at least one of the ring transmission message, the system signal, or the caller ID message, transmitting, at the local control block, the signal and/or storing the system signal and the caller ID in a caller ID transmitting memory in the CID service block;
- reading, at a system control block, the system signal and/or the CID stored in the CID transmitting memory, and transmitting the CID to the SLC circuit through a switching circuit and a system bus;
- and
- if the local control circuit in the SLC circuit provides the CID to a corresponding port, transmitting the CID through a subscriber line and displaying the CID on a caller ID phone at a subscriber side.
A PBX communication system comprising:
- a CID service circuit, the CID service circuit comprising:
- a first memory configured to receive and store a Caller ID (CID);
- a second memory configured to store preassigned CIDs out of the stored CIDs for transmission;
- and
- a switching circuit configured to transmit the CIDs stored in the second memory to a caller ID terminal.
Dependencies are inferred from the claim text.