JP2967643B2 - Digital telephone terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital telephone terminal, for example, an ISDN cordless telephone, comprising a main unit connected to a digital telephone line and an extension unit connected to the main unit by wire or wirelessly. And ISDN Home Telephone.

[0002]

2. Description of the Related Art In a cordless telephone or a home telephone comprising a main unit connected to a digital telephone line and a plurality of extension units connected to the main unit by wire or wirelessly, an extension unit is designated in an incoming signal. Information is not included, it is not possible to know to which extension machine the incoming call or to whom before receiving the incoming call. For this reason, when an incoming signal arrives, one of the extensions responds, talks with a communication partner, and transfers the call to the designated extension.

[0003]

In this case, the following disadvantages can be considered. When an incoming signal arrives, any of the extension units responds to the call, and it takes time to transfer the signal. A communication fee is also added during the above operation.

An object of the present invention is to eliminate the inconvenience that a call cannot be directly received at the intended extension machine as described above, and to improve the economy.

[0005]

A digital telephone terminal device according to the present invention includes a sub-address storage device for storing a sub-address of the terminal device, an extension number storage device for storing an extension number of an extension device, and an incoming call signal. The received sub address is compared with the own sub address stored in the own sub address storage means by the number of digits of the own sub address from each higher order digit. When the number of digits of the sub address exists, the number of the corresponding digit other than the number used for the matching is compared with the extension number stored in the extension number storage means,
And control means for causing only the corresponding extension device to transition to the incoming call state when they match.

[0006]

According to the present invention, an extension is automatically selected and an incoming call is made using the extension number of the extension in the destination subaddress included in the incoming signal.

[0007]

FIG. 1 shows the configuration of an embodiment of the present invention. In this figure, BS is the main unit, PS1 and PS2 are extension units, and 1 is I
Line control means having a layer 1 to layer 3 control function assumed under conditions of a user / network interface connectable to an SDN line;
Is an own sub-address storage means for storing an own sub-address for comparison with the incoming sub-address included in the incoming call signal at the time of incoming call, and 4 is a radio of the extension units PS1 and PS2 for comparing with the incoming sub-address included in the incoming call signal at the time of incoming call. Extension number storage means for storing a number;
Extension device connection means for connecting the device 2 by wire or wirelessly;
Reference numeral 6 denotes an analog circuit having an analog amplifier, an analog filter, a circuit for generating various tones, and the like. Reference numeral 7 denotes an audio codec for encoding and decoding digital / analog signals of the audio signal. Reference numeral 8 denotes a power supply circuit. DSU indicates a terminal terminating device (Digital Service Unit).

FIG. 2 is an operation flowchart of the embodiment of the present invention. Hereinafter, description will be made with reference to an operation flowchart of this embodiment. Note that (1) to (7) indicate each step.

As shown in the operation flowchart of FIG.
If there is an incoming call during standby (1), the line control means 1 detects the incoming signal (2), and the control means 2 sends the incoming subaddress and the own subaddress storage means 3 included in the incoming signal via the line control means 1. Is compared with the number of digits of the own sub-address starting from each upper digit (3). If the matching result does not match, the incoming call is ignored.

In the collation result, if they match (assuming that
It is assumed that the destination sub address is “222210” and the own sub address is “2222”. ), It is confirmed whether or not digits other than the collated digit exist in the destination sub-address (4). If a digit other than the collated digit exists in the destination subaddress (in this case, "10" exists), the number of the digit matches the extension number of the extension machine stored in the extension number storage means 4. (5). If there is no digit other than the collated digit in the destination subaddress, the control means 2 notifies the extension machines PS1 and PS2 via the extension connection means 5 of the incoming call. As a result, the extension units PS1 and PS2 transit to the receiving state, and enter the simultaneous receiving state (7).

[0011] When there is a match in the collation result (extension machine P
It is assumed that the extension number of S1 is "10". ), The control means 2 notifies the extension machine PS1 of the incoming call via the extension machine connection means 5. Thereby, the extension unit PS1 transitions to the incoming call state (6). If there is no match in the collation result, the incoming call is ignored.

As described above, by adding the own sub address and the extension number of the extension unit to the destination sub address and receiving the call, it is possible to select the extension unit of the digital telephone terminal device and receive the call, which is convenient and economical. Can be improved.

[0013]

As described above, according to the present invention, there is provided an own sub address storage means for storing a sub address of a terminal device, an extension number storage means for storing an extension number of an extension device,
The destination sub-address included in the incoming signal and the own sub-address stored in the own sub-address storage unit are compared with the number of digits of the own sub-address from the upper digits, and if they completely match, the number of digits of the compared own sub-address If the number of digits of the destination sub address exists as above, the number of the corresponding digit other than the one used for comparison is compared with the extension number stored in the extension number storage means, and if they match, only the corresponding extension is received. Control means for making a transition to a state, and by adding the own sub address and the extension number of the extension unit to the destination sub address and receiving the call, the extension unit of the digital telephone terminal device can be selected and received, which is convenient. Efficiency and economy can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is an operation flowchart of the embodiment of FIG. 1;

[Description of Signs] BS Main Unit PS1 Extension Unit PS2 Extension Unit 1 Line Control Unit 2 Control Unit 3 Own Sub Address Storage Unit 4 Extension Number Storage Unit 5 Extension Unit Connection Unit 6 Analog Circuit 7 Voice Codec 8 Power Supply Circuit

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H04Q 3/58 H04M 3/42

Claims (1)

(57) [Claims] 1. A terminal device comprising a main device connected to a digital telephone line and a plurality of extension devices connected to the main device by wire or wirelessly, and a local sub address storage for storing a sub address of the terminal device. Means, an extension number storage means for storing the extension number of the extension machine, and a destination sub-address included in the incoming call signal and the own sub-address stored in the own sub-address storage means are collated from each higher-order digit to the number of digits of the own sub-address. In the case of a perfect match, if the number of digits of the destination sub-address is greater than the number of digits of the own sub-address that has been verified, the number of the relevant digit other than the one used for the verification and the extension number storage means are stored. Control means for comparing the received extension number with the received extension number and, if the two numbers match, only the corresponding extension machine is shifted to the receiving state. Talk terminal equipment.