CN1481139A - Digital network formed by switchboard/key telephone system and its signal transmission method - Google Patents

Abstract

The invention relates to a digital network formed by an exchanger/key telephone system and a signal transmission method thereof, which mainly leads a personal computer to take a telephone in a Key Telephone System (KTS) as a node and further form a closed network with an exchanger (PBX) for transmitting signals of voice, data, video and the like, wherein, the data and the video data are transmitted in a packet form, and the telephone also converts the conversation voice into a voice packet to be transmitted on the network so as to maintain the conversation quality; the phone can further set the priority of the data packet transmitted between the voice packet and the PC, so as to ensure the quality of the communication when a large amount of data packets are transmitted on the network.

Description

Digital network constituted by exchange/key telephone system and its signal transmission method

technical field

The invention relates to a digital communication network and signal transmission, in particular to a digital network composed of a switchboard/key telephone system and a signal transmission method thereof.

Background technique

Because VoIP (Voice over IP) has the characteristics of lower communication costs than ordinary telephones and the ability to integrate data, it attracts more and more companies to use it for communication applications inside and outside the company. Through the establishment of VoIP, enterprises can transmit voice, data, and video on a single IP platform at the same time, so it can not only simplify management, but also greatly reduce the cost of use. The effect of integrating voice communications over a local area network (LAN) is much the same.

As shown in Figure 4, it discloses a regional network integrated with the telephone exchange system, which is mainly connected to each computer 71 and switch 72 by a plurality of hubs 70 to form a network, and the hub 70 is also connected to one or more than one at the same time Phone 73 is connected. As shown in Figure 5, it is still connected with a plurality of computers 71 by a hub 70, and the specific computers 71 are connected with a switch 72 and a telephone 73 respectively.

In the aforementioned network, the phone 73 uses a small amount of bandwidth (such as 4K) on the line for voice transmission. However, whether it is a traditional IP network or a local area network (LAN), it is mainly based on data (data packet) transmission. The main appeal of the overall design is also improving its dependability (correctness) (reliable), that is, priority is given to transmitting data packets. In this case, when there is a large amount of data transmission between the computers 71, the voice transmission part will be Transmission delay and uneven delay (jitter) phenomenon occurs. Since voice transmission emphasizes immediacy, it is conceivable that the voice quality is not good when transmitting voice over a data network.

Since the traditional data network cannot control the packet delay problem, in order to make the voice signal with real time transmission requirements have good communication quality, we can only choose enough bandwidth to ensure the quality of network communication. However, this expedient measure still cannot solve the delay phenomenon caused by voice transmission when a large number of data packets are transmitted.

Therefore, it can be seen from the above that the communication quality of voice transmission over the network still needs to be further improved and a feasible solution must be sought.

Contents of the invention

Therefore, the purpose of the present invention is to provide a digital closed network composed of switches, key telephone systems, and computers to transmit signals such as voice, data and video, and to make voice transmission on the closed network possess ideal communication quality.

The main technical means adopted to achieve the above-mentioned purpose is to use the phone in the key telephone system (KTS) as a node, which is respectively connected with network devices (such as personal computers, etc.) and switches (PBX) to form a closed network for transmitting voice, Data and video signals; Among them, the phone can not only process data, video and other internal packets, but also has a voice packet conversion function, which is used to convert the voice in the call into a voice packet, and transmit it on the network. It is transmitted in the form of packets, so that it will not be affected by the massive transmission of data and video data packets, so as to effectively ensure the quality of its calls.

The above-mentioned phone further has a transmission priority weight setting function, which can set the priority weight of the data packet transmitted between the voice packet and the network device, and it gives the voice packet a higher priority weight, which means that the voice packet is mainly transmitted to ensure its Immediateness, and at the same time, it does not affect the reliability required for data packet transmission such as data and video.

The next object of the present invention is to provide a digital network composed of switchboard, key telephone system and computer, which includes:

At least one exchange (PBX), which is used for connecting multiple telephone office lines or leased lines, and has a packet processing unit inside;

A plurality of push-button phones are connected to the aforementioned exchange in an unspecified network topology to form a closed network;

More than one group of network devices (such as personal computers, network printers, hubs, etc.) are connected with different push-button phones as nodes; among them:

The push-button telephone includes at least:

A controller, which can process the call voice as a packet, or restore the voice packet;

A microphone, used to input the call voice to the controller, or play the voice sent by the controller;

a first network connection interface for connecting the controller to the network device;

A second network connection interface is used for the controller to connect with the switch through the network line.

In the above-mentioned network, each group of network devices can transmit data, video and other data packets in a closed network through a push-button phone, and can also transmit data/video data packets through a switch and a local line or a digital dedicated line and an external network. When the phone is in a call state, the input call voice will be converted into packets for transmission on the network, so as to take into account the immediate transmission requirements of communication voice and the dependable transmission requirements of data/video data packets.

The aforementioned first network connection interface is connected to the network card installed on the network device.

The aforementioned switch is provided with a connection interface, which is connected to the internal packet processing unit, whereby the second network connection interface of the key phone can be connected to the internal packet processing unit through the connection interface of the switch.

The aforementioned push-button phone further includes a bridge, which is connected between the controller, the first and the second network connection interface, so as to control the packet flow of voice packets and data packets input to the closed network.

The controller of the aforementioned push-button phone is further connected with a display, a key set, and an image capture element; wherein, the image signal captured by the image capture element will also be processed by the controller and then transmitted on the network; thus the aforementioned closed network can be simultaneously Data, voice and video transmission.

According to the above solution, the system and method of the present invention can not only transmit voice, data and video signals, but also can effectively ensure that the voice has an ideal communication quality.

Description of drawings

Fig. 1: system block diagram of the present invention.

2A, 2B, and 2C are schematic diagrams of the connection between the switch and the push-button telephone system in different topological forms according to the present invention.

Fig. 3 is a schematic diagram of a closed network of a possible embodiment of the present invention.

Figure 4: A schematic diagram of a regional network integrated with a telephone exchange system.

Figure 5: It is another schematic diagram of a regional network integrated with a telephone exchange system.

(2) Drawing number part:

10 switch 11 packet processing unit

12 connection interface 20 button phone

21 Controllers 22 Microphones

23 The first network connection interface 24 The second network connection interface

25 button groups 26 displays

27 image capture components 28 bridge

30 network devices

70 hub 71 computer

72 switches 73 phones

Detailed ways

Regarding the specific technical means of the present invention, first please refer to shown in Figure 1, which discloses the basic system architecture of the internal closed network of the present invention, which includes:

At least one exchange (PBX) 10, which can be connected with a plurality of telephone office lines TK or dedicated lines (such as XDSL), is provided with a packet processing unit 11 inside, in order to convert the incoming voice into a packet form, or convert the internal The voice packet sent by the network is restored to voice, and then sent by the office line TK;

A plurality of push-button phones 20 can be connected with the aforementioned exchange 10 in an unspecified network topology (as shown in Figures 2A, 2B, and 2C) to form a closed network for transmitting data signals such as voice, data, and video;

More than one group of network devices 30, which can be personal computers, network printers, hubs, facsimile machines or other computer terminal equipment. node, and then connect with the closed network through the key phone 20; wherein:

The push-button phone 20 at least includes:

A controller 21 is used to process the call voice as a packet, or restore the voice packet to voice;

A microphone 22 is used for the caller to input the call voice to the controller 21, or play the voice sent by the controller 21;

A first network connection interface 23 for connecting the controller 21 with the network device 30;

A second network connection interface 24, for the controller 21 to be connected to the switch 10 through a network line;

A button group 25, located at the input end of the controller 21, for dialing or setting related parameters;

A display 26, located on the output end of the controller 21, for displaying relevant information or restored video images;

An image capture element 27 is located at the input end of the controller 21 for capturing video images, and the controller 21 performs packet processing, and then transmits through a closed network; in this embodiment, the image capture element 27 is formed by a CCD ;in:

The foregoing switch 10 is provided with a connection interface 12, which is connected to the second network connection interface 24 of the push-button phone 20 in addition to being connected to the internal packet processing unit 11;

Also, the above-mentioned key phone 20 further includes a bridge 28, which is connected between the controller 21 and the first/second network connection interface 23/24, so as to control the voice packet and the data/video data packet in the closed Transit traffic on the network;

Moreover, the first network connection interface 23 is connected to a network card installed on the network device 30 so as to connect the network device 30 with the closed network.

It can be seen from the above description that the basic structure of the closed network formed by the present invention is based on this structure. The key telephone system (KTS) composed of a plurality of key telephones 20 is except that it forms a closed network with the exchange (PBX), and each key under its jurisdiction The phones 20 respectively constitute a node for network devices such as personal computers, hubs, and network printers to connect to the closed network via different nodes (as shown in FIG. 3 ).

And under the aforementioned network architecture and functions such as voice packet conversion, restoration and bridging provided by the key phone 20, each group of network devices 30 can carry out data/video data packet transmission in a closed network through the bridging of the key phone 20, or by The switch 10 performs data packet transmission with the office line or the digital leased line and the external network.

It is particularly worth mentioning that when the call voice is transmitted on the aforementioned closed network, ideal call quality will be obtained. The main reason is that when the push-button phone 20 is in the talking state, the conversation voice input through the microphone 22 will be converted into a packet form by the controller 21 and transmitted on the network, and after the push-button phone 20 of the other party receives the voice packet from the network, it will be sent by the controller. The device 21 restores the voice to be played by the microphone 22 again. Since voice is transmitted on the network line in the form of packets, compared with pure voice signals transmitted on the network with limited bandwidth, it can effectively solve the phenomenon of transmission delay and uneven delay, and effectively improve the quality of calls. If desire to further implement the promotion of call quality, then can be set the priority weight of speech packet and data/video information packet by controller 21 in conjunction with bridge 28, in other words, by controlling the flow of voice packet and data/video information packet on the network, So that the transmission of the call voice can not be delayed.

As can be seen from the above, the present invention provides a special network architecture, which is equipped with functions such as voice packet conversion, restoration and bridging in conjunction with push-button phones, so that when the voice of a call is transmitted on the network, delays and uneven transmission can be avoided, and real-time transmission can be ensured. Therefore, the call quality is significantly improved; in addition to the call voice, the present invention also provides a communication protocol (IEEE 802.3) suitable for data packet transmission, so that the data/video data packets of any node in the closed network can be smoothly transmitted to Any other node has a high degree of transparency, in other words, it also ensures the reliable transmission requirements of data/video data packets. It can be seen that the present invention solves the defect of poor quality of Internet phone calls with a special network system.

Claims (10)

1. method for transmitting signals that constitutes digital network with switch/KTS (key telephone system), system with the key pad telephone set in the KTS (key telephone system) (KTS) as node, link with network equipment and switch (PBX) respectively, to constitute a closed network, for data such as transferring voice, data and video signals; Wherein, key pad telephone set has voice data packet conversion and restoring function, is voice data packet in order to the speech conversion in will conversing, make voice with the package form in transmission over networks.

2. the method for transmitting signals that constitutes digital network with switch/KTS (key telephone system) as claimed in claim 1, it is characterized in that: described key pad telephone set further has transmission priority and resets and decide function, it can set the priority weight of transmission other data/video data package between voice data packet and each network equipment, and it gives voice data packet higher priority weight.

3. the method for transmitting signals that constitutes digital network with switch/KTS (key telephone system) as claimed in claim 1, it is characterized in that: described switch also has voice data packet conversion and restoring function, the speech conversion of sending in order to outside line is a voice data packet, delivers on the internal network and transmits; Or, deliver to outside line again with the voice data packet reduction that internal network is sent.

4. digital network that constitutes with switch/KTS (key telephone system) is characterized in that including:

At least one switch (PBX) is for a plurality of phone exchange line or private line accesses, and it has voice data packet and handles and restoring function;

The key pad telephone set of plural number is with not particular network topology form and the binding of aforementioned switch, to constitute a closed network, for data such as transferring voice, data and video signals;

One group of above network equipment, be respectively with different key pad telephone sets as node and with its binding.

5. the digital network that constitutes with switch/KTS (key telephone system) as claimed in claim 4 is characterized in that described key pad telephone set includes at least:

One controller can be made call voice package and handle, or voice data packet is done reduction handle;

One microphone, in order to the input call voice to controller, or the voice sent of playing controller;

One first network connects interface, is to be connected with network equipment for controller;

One second network connects interface, is to be connected with switch by network line for controller.

6. the digital network that constitutes with switch/KTS (key telephone system) as claimed in claim 5, it is characterized in that being provided with in the described switch packet processing unit, it is connected interface respectively and connects with outside exchange line and, this connects interface system and is connected the interface connection with second network of key pad telephone set.

7. the digital network that constitutes with switch/KTS (key telephone system) as claimed in claim 5 is characterized in that described first network connects interface system and is connected to the network card of installing on the network equipment.

8. the digital network that constitutes with switch/KTS (key telephone system) as claimed in claim 5, it is characterized in that described key pad telephone set further includes a bridger, this bridger system is connected in controller, first, second network connects between interface, uses the package flow that control voice data packet and data/video data package input to close network.

9. the digital network that constitutes with switch/KTS (key telephone system) as claimed in claim 5 is characterized in that the controller of described key pad telephone set further is connected with display, key groups.

10. the digital network that constitutes with switch/KTS (key telephone system) as claimed in claim 9, it is characterized in that described controller input is provided with an image capturing element, after the signal of video signal system of this image capturing element picked-up does the package processing by controller, in transmission over networks.