JPH0998227A - Telephone set for lan connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain voice speech even in the case of a LAN by providing a data converter inter-converting voice data and a packet signal and a voice converter inter-converting voice signal and voice data. SOLUTION: A 2nd user (called party) recognizing a speech from a 1st user (caller) starts similarly a speech to a conventional telephone set, the speech (voice) is converted into voice data at first by a 3rd handset 1c, the voice data after conversion are converted into a LAN packet by a 3rd interface 3c and sent to an Ethernet (R) IN. The packet sent to the Ethernet (R) IN is read by a 1st personal computer 105a, and the packet, are converted into voice data by a 1st interface 3a. Then the data are sent to the 1st handset 1a and converted into a voice signal and then the reply speech (voice) of the 2nd user (called party) is sent to the 1st user (caller).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device for LAN connection, and more particularly to a telephone device for LAN connection capable of exchanging voice in real time.

[0002]

2. Description of the Related Art A LAN (Local Area Network) is a network constructed mainly in the same building or in the same premises mainly for computer communication.
Ethernet as a type of (in-house communication network)
It has been known. Figure 4 is a type of Ethernet 10B
It is a schematic diagram of a system configuration of ASE-5. As shown in FIG. 4, in the Ethernet IN, both ends of the coaxial cable 101 are terminated by the first and second terminators 102a and 102b, and the first, second and third transceivers 103a, 103b, 103c. .. are connected. A first personal computer (hereinafter referred to as a personal computer) 105a is connected to the first transceiver 103a via a first transceiver cable 104a and a second personal computer 105b is connected to the first transceiver 103a via a second transceiver cable 104b. .

Similarly, the second transceiver 103b is connected to the third transceiver cable 104 and the fourth transceiver cable 104, respectively.
3rd and 4th personal computers 105c, 1 via c, 104d
05d is connected, and the fifth and sixth transceiver cables 104e and 10e are connected to the third transceiver 103b, respectively.
The fifth and sixth personal computers 105e and 105f are connected via 4f. Between personal computers connected to the Ethernet IN configured as described above, it is possible to send and receive texts (mutual communication) and to transmit the intention of the user (e-mail). On the other hand, there has been a general telephone (such as an office button telephone) using a telephone network as a means for transmitting the will from old times.

[0004]

However, in the conventional Ethernet described above, it is possible to send and receive texts by e-mail between personal computers connected to the Ethernet, but the means of transmitting intention is poor in real time.
It is also possible to simultaneously communicate in real time between the sender and the receiver, but since the text is premised on reading and writing, it lacks speed and convenience. This means that LANs other than Ethernet (eg token ring, FD
The same applies to (DI, etc.). On the other hand, the above-mentioned general telephones require exchange equipment for telephone exchanges, and individual subscriber lines are required from each telephone to the exchange, and the telephone number for each subscriber line is fixed and changed. It is not easy, and construction is required to move the telephone, and the general telephone network transmits only voice signals, and its main purpose was telephone conversation.

Therefore, an object of the present invention is to provide a telephone device for LAN connection which is capable of voice communication even when a LAN is used and which is rich in real-time, speedy and convenient as means for transmitting a will. It is to be.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 is connected to a terminal device connected to a LAN which performs high-speed communication by packets, and the mutual connection between voice data and packet signals. It is characterized by comprising a data conversion device for performing conversion and a voice conversion device connected to the data conversion device for performing mutual conversion between voice and voice data.

According to the invention of claim 1, for example, the first
The user (calling party) dials the identification number (destination address) of the terminal device (personal computer) of the other party to the first voice conversion device (telephone), and further makes a call. The identification number and the call are converted by the data converter into a packet containing "destination address, source address and call data", and sent out to the LAN. The partner's computer is LA
Search on N, read this identification number (destination address), recognize that it is a packet sent to itself,
Notify the telephone (callee) connected to the PC that the call was made. When the called party makes an appropriate answering call to the calling party's call, the answering call is sent out to the LAN as a packet containing "destination address, source address and call data". The calling party searches for the packet and makes a new call in response to the called party's response. By transmitting and receiving such a packet, a call can be made between the first user and the second user via the LAN.

The invention according to claim 2 is characterized in that the data converter is connected between a LAN and a public line network. According to the second aspect of the present invention, for example, the first user is connected to the public line network (that is, a general telephone), and the second user is connected to the LAN via the terminal device. When the first user dials the identification number (destination address) of the second user, this identification number (destination address) is sent to the data converter via the public line network, and the data converter transmits a signal for LAN. The packet is converted into a packet including the "destination address and the source address" and sent to the LAN. This packet is read out by the search of the terminal device (personal computer) of the second user and informs the telephone connected to the personal computer that the packet has been called.

Next, when the called party makes a call by picking up the telephone in response to the call, the LA becomes a packet containing "source address, destination address and call data".
Sent to N. This packet is searched by the data conversion device on the caller side, converted into voice data, and sent to the caller. The caller can listen to the call of the called party by the voice data converted into voice by the telephone. In this way, the public network users and L
A call with an AN user becomes possible.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
This will be described in detail with reference to FIG. Note that the same reference numerals are given to the already described portions, and redundant description is omitted.

(1) First Embodiment Example FIG. 1 is a system configuration diagram of the present embodiment example. As shown in FIG. 1, a first handset (telephone) 1a for converting a user's voice into an electric signal (voice data) converts the converted electric signal (voice data) via a curl code 2a.
It is connected to the first interface 3a for taking in and taking out from the personal computer. The first interface 3
a is the first personal computer 105 via the first communication cable 4a.
a. The first interface 3a converts the received voice data into a LAN packet, and also converts a packet (see FIG. 2) received from another handset via the first personal computer 105a into a voice signal and transmits the voice signal to the handset. Have the function to

Similarly, the second and third handsets 1
b and 1c are the second and third curl cords 2b and 2c, respectively.
To the second and third interfaces 3b and 3c, and the second and third interfaces 3b and 3c are connected to the third and fifth interfaces via the second and third communication cables 4b and 4c, respectively.
It is connected to the personal computers 105c and 105e.

Next, the operation of the embodiment thus configured will be described. For example, the first handset 1a
The first user (caller) who picked up is another personal computer (for example, the fifth personal computer 105e) that has been assigned in advance.
Dial the identification number (destination address) in the same way as a normal telephone. The first interface 3a converts the dial number into an Ethernet signal (packet),
It is sent to the Ethernet IN via the personal computer 105a. The packet structure at this time is, as shown in FIG. 2, a source address, a destination address, and data (call data).
It is composed of The packet sent to the Ethernet IN is read by the search from the fifth personal computer 105e, and an appropriate calling signal is recognized from the fifth personal computer 105e which recognizes that it includes its own address as a destination address via the third interface 3c. Is issued to the third handset 1c by the second user (callee) in response to the call signal.
c is picked up.

Next, when the second user (callee), who has recognized that the call is from the first user (caller), starts the call in the same manner as an ordinary phone call, this call (voice)
Is first converted into voice data by the third handset 1c, and the converted voice data is converted into a LAN packet (see FIG. 2) by the third interface 3c and sent to the Ethernet IN. The packet sent to the Ethernet IN is immediately read out by the first personal computer 105a, converted into voice data by the first interface 3a and sent to the first handset 1a to be converted into voice, and then transmitted by the first user. Second to (caller)
The answering call (voice) of the user (callee) is sent. In this way, the first user and the second user can talk in real time via the Ethernet IN.

(2) Second Embodiment Example FIG. 3 is a system configuration diagram of the present embodiment example. The difference between the present embodiment example and the first embodiment example is that the first embodiment example is a call between personal computers (handsets) connected to the Ethernet, whereas the present embodiment example is common to the Ethernet. The point is that the telephone lines (public communication lines) are connected and the telephones can be connected between the telephones connected to each.

As shown in FIG. 3, the first transceiver 10
3a is connected to a public line network personal computer 12 capable of inputting / outputting data and voice to / from the public line network 14 via a transceiver cable 11, and the personal computer 12 is connected to the public line network 14 via a communication cable 13. It is connected to the. General first, second, and third telephones 15a, 15b, 15c ... Are connected to the public line network 14.

Next, the operation of this embodiment will be described. The user (caller) connected to the public line network 14 is, for example, the first
The telephone 15a is picked up, and the identification number (telephone number, destination address) of, for example, the fifth personal computer 105e given in advance is dialed (the call may be made after dialing). By this dial signal, the personal computer 12 for connecting to the public line is connected through a switch or the like of the public line network 14. The personal computer 12 uses this telephone number as the fifth personal computer 10.
It is converted into an identification number of 5e and sent as a packet (see FIG. 2) to the Ethernet IN. The packet sent to the Ethernet IN is read by the search from the fifth personal computer 105e, and the fifth personal computer 105e, which recognizes that it is the destination, sends an appropriate calling signal, and the third handset 1c sends the packet to the third handset 1c. It is picked up by two users (called parties).

Next, when the second user starts a telephone call to the handset 1c in the same manner as a normal telephone call, this telephone call (voice) is transmitted through the interface 3c and the personal computer 105e to a LAN packet (see FIG. 2). ) And sent out to the Ethernet IN. This Ethernet IN
The packet sent to the computer is read by the personal computer 12, the packet is converted to voice data and sent to the first telephone 15c to be converted to voice, and the user of the public line network talks with the user of the LAN (voice). Will be sent.

In this manner, a general telephone user (user of the public line network) and a second user (user of the Ethernet) can talk in real time via the public line network and the Ethernet IN. Becomes

The case of the LAN has been described in the present embodiment, but a system in which the LAN is spatially expanded to have a higher speed, that is, an FDDI (fiber distributed digita) is used.
Of course, the present invention can also be applied to a metropolitan area metropolitan area network (MAN) and a wide area network (WAN) of an expanded scale.

Further, voice data transmitted via Ethernet can be compressed and transmitted, and the compression rate in this case can be changed according to conditions such as required voice quality and Ethernet occupation rate. . Furthermore, the time taken for a voice packet sent out on the Ethernet to reach the other party's device (personal computer) may not be constant. In such a case, in order to prevent the interruption of the audio, the audio data may be accumulated in the receiving device for a predetermined time, and the interruption may be eliminated before the audio data is reproduced. In this case, if the amount of accumulated voice data is increased, the delay of voice increases, so it is preferable to optimize the amount of voice data accumulated.

Furthermore, since the voice data on the Ethernet is digital data, a large-capacity storage device is connected to the Ethernet in advance and stored in this storage device so that it can be delivered at an appropriate time. May be. In this case, in order to reduce the storage capacity of the storage device, it is preferable to compress and store the audio data.

[0023]

As described above, according to the first aspect of the present invention, data conversion is performed which is connected to a terminal device connected to a LAN for high-speed communication by packets and performs mutual conversion between voice data and packet signals. Since the device and the voice conversion device that is connected to the data conversion device and performs mutual conversion between voice and voice data are provided, when voice is input to the voice conversion device (telephone) (when a call is made), the voice Is converted to voice data and sent to the data converter, and the LAN
The upper part is transmitted as a packet to the other data changing device and the voice converting device (telephone). As a result, a call is executed using the LAN, and it becomes possible to secure real-time property, speed property, and convenience even in the LAN.
Further, according to the invention of claim 2, since the data converter is connected between the LAN and the public network,
A voice call can be performed between a general telephone connected to a public line network and a voice conversion device (telephone) connected to a LAN.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a first embodiment example of the present invention.

FIG. 2 is a diagram showing a structure of a packet used in the example of the embodiment.

FIG. 3 is a system configuration diagram of a second embodiment example of the present invention.

FIG. 4 is a system configuration diagram of a conventional Ethernet.

[Explanation of symbols]

 1a, 1b, 1c Handset (voice converter) 3a, 3b, 3c Interface (data converter) 12 Personal computer 14 Public line network 15a, 15b, 15c General telephone 101 Ethernet (LAN) 102a, 102b Terminator 103a, 103b, 103c Transceiver 105a-105f Personal computer

Claims (2)

[Claims] 1. A data conversion device which is connected to a terminal device connected to a LAN for high-speed communication by packets and performs mutual conversion between voice data and a packet signal, and a voice and voice data which is connected to the data conversion device. A telephone device for LAN connection, comprising a voice conversion device for performing mutual conversion between the two. 2. The L according to claim 1, wherein the data converter is connected between a LAN and a public line network.
Telephone device for AN connection.