CN1516397B - Concentrator for sound telephone set and local network communication method - Google Patents

Abstract

Translated fromChinese

一种通过LAN进行通信的方法，所述LAN中设有：收容着进行数据通信的设备的多个LAN集线装置；多个声音电话机用集线装置；以及具有多个端口、在上述的多个LAN集线装置和上述的多个声音电话机用集线装置之间进行切换连接的LAN交换装置，该方法的特征在于包括以下步骤：接收和发送上述设备间的呼叫请求；根据呼叫请求接收和发送上述设备间呼出信息；根据用户回应接收和发送上述设备间的传送回应；从上述设备向声音电话机用集线装置传送有关声音电话号码和MAC地址的信息；把声音数据转换成包含声音电话号码和MAC地址的MAC帧；从声音电话机用集线装置向LAN接口传送MAC帧。

A method of communicating via a LAN, wherein the LAN is provided with: a plurality of LAN line collection devices accommodating devices for data communication; a plurality of line collection devices for voice telephones; A LAN switching device for switching and connecting between a plurality of LAN line concentrating devices and the above-mentioned multiple voice telephone line concentrating devices, the method is characterized in that it includes the following steps: receiving and sending a call request between the above-mentioned devices; Receiving and sending outgoing call information between the above-mentioned devices; receiving and sending transmission responses between the above-mentioned devices according to user responses; transmitting information about voice telephone numbers and MAC addresses from the above-mentioned devices to the hub device for voice telephones; converting voice data into MAC frame of voice telephone number and MAC address; MAC frame is transmitted from the voice telephone hub to the LAN interface.

Description

Translated fromChinese

用于声音电话机的集线装置以及局域网通信方法Line concentrating device for voice telephone set and local area network communication method

(本申请是申请日为1997年7月24日、申请号为97198216.3、且发明名称相同的申请的分案申请。)(This application is a divisional application of an application with the filing date being July 24, 1997, the application number being 97198216.3, and the same invention title.)

技术领域technical field

本发明涉及一种通过局域网(LAN)接口收容声音电话机等设备的声音电话机用集线装置与LAN中的通信方法。The present invention relates to a method of communication between a hub device for a voice telephone that accommodates equipment such as a voice telephone through a LAN interface and a LAN.

背景技术Background technique

目前，一般在公司内部的通信中，声音电话机的收容通过PBX(Private Branch Exchange，内部交换机)来进行，而数据通信则通过LAN来进行，两者是独立的。特别是近年来，随着个人计算机(以下简称PC)等价格的降低及性能的提高，PC已经普及开来，几乎可与声音电话机相提并论。随着这种情况的出现，人们希望公司内部的通信系统能够成为LAN与声音电话机都能加入的环境。At present, generally in the internal communication of the company, the storage of the voice telephone is carried out through the PBX (Private Branch Exchange, internal switchboard), while the data communication is carried out through the LAN, and the two are independent. Especially in recent years, along with the reduction of price and the improvement of performance such as personal computer (hereinafter referred to as PC), PC has been popularized, almost can be compared with voice telephone. As this situation arises, it is expected that the internal communication system of the company can become an environment where both LAN and voice telephones can join.

但是，在现有的公司内部通信中，存在以下的问题。However, the following problems exist in the conventional internal communication of the company.

虽然通过将声音电话机收容在LAN中可以统一构成公司内部的底层结构，但作为“声音”特有的性质即周期性和实时性与主要是在LAN上进行的数据通信的突发性及高可靠性的性质正好相反，统一起来非常困难。结果，在公司内部需要设置PBX设备和LAN的有关设备，还需要与此相关的2个系统的配线。By storing voice telephones in the LAN, the company's internal infrastructure can be unified, but the periodicity and real-time nature of the unique nature of "voice" and the suddenness and high reliability of data communication performed mainly on the LAN The nature of sex is just the opposite, and it is very difficult to unify. As a result, it is necessary to install PBX equipment and LAN-related equipment inside the company, and also need to wire two related systems.

发明内容Contents of the invention

本发明的目的在于将公司内部的通信底层结构统一到LAN中，无需PBX即可实现声音电话机的收容。The purpose of the present invention is to unify the internal communication infrastructure of the company into the LAN, and realize the accommodation of voice telephones without PBX.

为解决上述问题，本申请中的第1发明为一种用于声音电话机的集线装置(以下简称TLA，又称为声音电话机用集线装置)，该集线装置设置在包括以下装置的LAN中：对收容的多个接口进行切换连接的LAN交换装置以及分别通过上述的接口与上述的LAN交换装置相连接、并且收容通过LAN进行数据通信的设备的多个LAN集线装置；该集线装置的构成如下。In order to solve the above problems, the first invention in the application is a line collection device for voice telephone (hereinafter referred to as TLA, also known as line collection device for voice telephone), the line collection device is arranged on the following devices: In the LAN: a LAN switching device that switches and connects the stored multiple interfaces, and a plurality of LAN hub devices that are respectively connected to the above-mentioned LAN switching device through the above-mentioned interfaces and accommodate devices that perform data communication through the LAN; the The configuration of the line concentrator is as follows.

作为第1发明的TLA具有与上述的LAN交换装置相连接的LAN接口、以及和与上述的设备类型并列设置的1台或多台声音电话机相连接的1组或多组声音电话机接口。另外，该TLA具有将从上述的1台或多台声音电话机收到和发送给它们的声音数据变换成具有固定长度的MAC帧、以及只将上述的MAC帧化的声音数据中继给上述的LAN接口一侧的功能。The TLA as the first invention has a LAN interface connected to the above-mentioned LAN switching device, and one or more sets of voice telephone interfaces connected to one or more voice telephones arranged in parallel with the above-mentioned device type. In addition, this TLA has the functions of converting the voice data received from and sent to the above-mentioned one or more voice telephones into MAC frames with a fixed length, and relaying only the above-mentioned MAC-framed voice data to the above-mentioned function of the LAN interface side.

本申请中的第2发明是：在第1发明的TLA中设有与和上述的LAN交换装置相连接的LAN接口不同的、在装置自身内部的CPU和上述LAN集线装置之间实现发送和接收的第2LAN接口。The 2nd invention in the present application is: the TLA of the 1st invention is provided with a LAN interface different from the LAN interface connected to the above-mentioned LAN switching device, and realizes sending and receiving between the CPU inside the device itself and the above-mentioned LAN hub device. 2nd LAN interface for receiving.

第3发明是：第1发明的TLA具有把模拟用户的线路信号变换成TCP/IP中的呼叫控制协议的功能，并且具有收容模拟用户终端的构成。The third invention is that the TLA of the first invention has a function of converting the line signal of the analog user into a call control protocol in TCP/IP, and has a configuration for accommodating the analog user terminal.

第4发明是：上述的第1发明的TLA中设有与和上述的LAN交换装置相连接的LAN接口不同的、对装置自身内部的CPU进行发送和接收的第2LAN接口；并且具有执行TCP/IP呼叫控制顺序以及将从收容的上述多台声音电话机收到的声音数据变换成TCP/IP数据包或者DUP/IP数据包的功能以及经过上述的第2LAN接口发送和接收这些TCP/IP数据包或者DUP/IP数据包的功能。The 4th invention is: the TLA of the above-mentioned 1st invention is provided with the 2nd LAN interface that is different from the LAN interface connected with the above-mentioned LAN switching device, and the CPU inside the device itself is sent and received; The IP call control procedure and the function of converting voice data received from the above-mentioned multiple voice telephones into TCP/IP packets or DUP/IP packets and sending and receiving these TCP/IP data through the above-mentioned second LAN interface Packet or DUP/IP packet function.

第5发明是：第4发明的TLA中的上述的第2LAN接口上连接有把该第2LAN接口与LAN外部或者上述LAN集线装置选择连接的路由器。According to a fifth invention, in the TLA of the fourth invention, a router for selectively connecting the second LAN interface to the outside of the LAN or the LAN hub device is connected to the second LAN interface.

第6发明是一种LAN的通信方法，所述LAN包括：收容着进行数据通信的多个LAN集线装置；如第1发明所述的多个TLA；以及在具有多个端口的上述的多个LAN集线装置和上述的多个TLA之间进行切换连接的LAN交换装置；上述LAN通信方法如下。The sixth invention is a communication method of a LAN, the said LAN includes: accommodating a plurality of LAN hub devices for data communication; a plurality of TLAs as described in the first invention; A LAN switching device for switching and connecting between a LAN hub device and the above-mentioned multiple TLAs; the above-mentioned LAN communication method is as follows.

即，对收容在上述TLA中的一台或多台声音电话机进行的呼叫控制，由收容在上述LAN集线装置中的个人计算机或者工作站来执行。That is, call control to one or more voice telephones accommodated in the TLA is performed by a personal computer or a workstation accommodated in the LAN hub device.

第7发明是：在第6发明中所述的LAN通信方法中，当从被呼叫侧的上述计算机或者工作站没有收到应答时，使用该被呼叫侧的声音电话机接口的控制信道信号来发出呼叫到达通知以及检测应答。The seventh invention is: in the LAN communication method described in the sixth invention, when no response is received from the computer or workstation on the called side, the control channel signal of the voice telephone interface on the called side is used to send Call arrival notification and detection response.

第8发明是一种LAN的通信方法，所述LAN中设有：如第1发明中所述的多个TLS；收容着通过上述LAN进行数据通信的设备的多个LAN集线装置；以及具有多个端口的上述.LAN的交换装置；上述LAN通信方法如下。The eighth invention is a communication method of a LAN provided with: a plurality of TLSs as described in the first invention; a plurality of LAN hub devices accommodating devices for data communication through the LAN; and The above-mentioned LAN switching device with a plurality of ports; the above-mentioned LAN communication method is as follows.

即，与在上述的声音电话机用集线装置之间进行的声音电话机通信有关的声音数据包的路由选择，由根据上述数据包设定的上述MAC帧中的MAC地址进行的上述LAN的交换装置的切换操作来进行。That is, routing of voice data packets related to voice telephone communications between the above-mentioned voice telephone line hub devices is performed by the MAC address in the MAC frame set based on the data packets. The switching operation of the switching device is performed.

第9发明是一种LAN的通信方法，所述LAN中设有：收容着进行数据通信的设备的多个LAN集线装置；如第1发明中所述的多个TLA；以及具有多个端口、在上述的多个LAN集线装置和上述的多个声音电话机用集线装置之间进行切换连接的LAN交换装置；上述的LAN通信方法如下。A ninth invention is a communication method of a LAN provided with: a plurality of LAN hub devices accommodating devices for data communication; a plurality of TLAs as described in the first invention; and a plurality of ports. . A LAN switching device for switching and connecting between the above-mentioned multiple LAN line concentrators and the above-mentioned multiple voice telephone line concentrators; the above-mentioned LAN communication method is as follows.

即，MAC帧中的数据部分适用具有吸收声音数据包的到达时间变化的功能的帧，声音电话机送出和收到的声音数据被进行数据包化以后再在LAN上传送。That is, the data part in the MAC frame is applied to a frame having a function of absorbing the variation of the arrival time of the voice data packet, and the voice data sent and received by the voice telephone is packetized and then transmitted on the LAN.

采用上述第1发明的话，由于TLA的构成如上所述，从收容在TLA中的声音电话机收到的和发送给它们的声音数据被变换成MAC帧后中继给LAN接口，并通过该LAN接口加到LAN交换装置上。通过LAN交换装置的切换连接，其声音数据可通过其他TLA送到其他声音电话机上。According to the above-mentioned first invention, since the structure of the TLA is as described above, the voice data received from and sent to the voice telephones accommodated in the TLA is converted into a MAC frame and then relayed to the LAN interface, and transmitted through the LAN Interfaces are added to the LAN switching device. Through the switching connection of the LAN switching device, its voice data can be sent to other voice telephones through other TLAs.

采用第2发明的话，由于在第1发明的TLA中设有与和上述的LAN交换装置相连接的LAN接口不同的、在装置自身内部的CPU和上述LAN集线装置之间实现发送和接收的第2LAN接口，故可以象第6发明中那样，由收容在LAN集线装置中的个人计算机或者工作站来实现对于收容在TLA中的声音电话机进行的呼叫控制。If the 2nd invention is adopted, since the TLA of the 1st invention is provided with a LAN interface different from the LAN interface connected to the above-mentioned LAN switching device, a device for realizing transmission and reception between the CPU inside the device itself and the above-mentioned LAN hub device The 2nd LAN interface, therefore can be as in the 6th invention, by the personal computer or the workstation that is accommodated in the LAN hub device, realizes the call control that is carried out to the voice telephone set accommodated in the TLA.

采用第3发明的话，TLA把普通声音电话机送出的模拟用户线路信号变换成TCP/IP中的呼叫控制协议。即，不用个人计算机或者工作站进行呼叫控制，在TLA一侧也能进行与电话机的呼叫控制。According to the third invention, TLA converts the analog subscriber line signal sent from the ordinary voice telephone into the call control protocol in TCP/IP. That is, call control with a telephone can also be performed on the TLA side without performing call control by a personal computer or a workstation.

采用第4及第5发明的话，由于TLA把从声音电话机收到的声音数据变换成TCP/IP数据包或者DUP/IP数据包，以及经过上述的第2LAN接口发送和接收这些TCP/IP数据包或者DUP/IP数据包，因此，从声音电话机经过路由器可以与LAN外部的网络进行发送和接收。If the 4th and 5th inventions are adopted, the TLA converts the voice data received from the voice telephone into TCP/IP packets or DUP/IP packets, and sends and receives these TCP/IP data via the above-mentioned 2nd LAN interface. Packet or DUP/IP data packet, therefore, it is possible to send and receive from the voice phone to and from the network outside the LAN through the router.

采用第6发明的话，对收容在上述TLA中的一台或多台声音电话机进行的呼叫控制，由收容在上述LAN集线装置中的个人计算机或者工作站来执行。According to the sixth invention, call control to one or more voice telephones accommodated in the TLA is performed by a personal computer or a workstation accommodated in the LAN hub device.

采用第7发明的话，在第6发明中所述的LAN通信方法中，当从被呼叫侧的上述计算机或者工作站没有收到应答时，使用该被呼叫侧的声音电话机接口的控制信道信号来发出呼叫到达通知以及检测应答。According to the seventh invention, in the LAN communication method described in the sixth invention, when no response is received from the computer or workstation on the called side, the control channel signal of the voice telephone interface on the called side is used to Announce call arrival and detect answer.

采用第8发明的话，与TLA之间进行的声音电话机通信有关的声音数据包的路由选择，根据上述数据包设定的上述MAC帧中的MAC地址通过上述LAN的交换装置的切换操作来进行。According to the eighth invention, the routing of the voice data packet related to the voice telephone communication between the TLAs is performed based on the MAC address in the MAC frame set in the data packet through the switching operation of the switching device of the LAN. .

采用第9发明的话，MAC帧中的数据部分适用具有吸收声音数据包的到达时间变化的功能的帧，声音电话机送出和收到的声音数据被进行数据包化以后再在LAN上传送。这样，上面提到的问题就可以解决。According to the ninth invention, the data part of the MAC frame is applied to a frame having a function of absorbing the variation of the arrival time of the voice packet, and the voice data sent and received by the voice telephone is packetized and then transmitted on the LAN. In this way, the problems mentioned above can be solved.

附图说明Description of drawings

图1是表示本发明的第1实施例的LAN中的声音交换系统的构成方框图。FIG. 1 is a block diagram showing the configuration of a voice switching system in a LAN according to a first embodiment of the present invention.

图2是表示图1中的TLA30的构成的方框图。FIG. 2 is a block diagram showing the configuration ofTLA 30 in FIG. 1 .

图3是用于说明图1中所采用的MAC帧格式的示意图。FIG. 3 is a schematic diagram for explaining the MAC frame format used in FIG. 1 .

图4是表示图1的操作顺序的示意图。FIG. 4 is a schematic diagram showing the operation sequence of FIG. 1 .

图5是作为本发明的第2实施例的LAN通信方法的顺序图。FIG. 5 is a sequence diagram of a LAN communication method as a second embodiment of the present invention.

图6是作为本发明的第3实施例的TLA的构成方框图。Fig. 6 is a block diagram showing the structure of a TLA as a third embodiment of the present invention.

图7是表示图1的一个变形例的示意图。FIG. 7 is a schematic diagram showing a modified example of FIG. 1 .

图8是表示附加有功能的TLA的方框图。Fig. 8 is a block diagram showing a function-added TLA.

具体实施方式Detailed ways

图1是表示本发明的第1实施例的LAN中的声音交换系统的构成方框图。FIG. 1 is a block diagram showing the configuration of a voice switching system in a LAN according to a first embodiment of the present invention.

该LAN中的声音交换系统包括：多个作为信息处理类设备的个人计算机(PC)1、2、3、4；与它们对应地设置的声音电话机5，6、7、8；收容这些个人计算机1～4的2台LAN集线器10、20；已经收容上述声音电话机5、6、7、8的2台TLA30、40。在某些场合下，LAN集线器10、20收容的是工作站，而不是个人计算机1～4。The voice exchange system in the LAN includes: a plurality of personal computers (PC) 1, 2, 3, 4 as information processing equipment;voice telephones 5, 6, 7, 8 set correspondingly to them; TwoLAN hubs 10, 20 of computers 1-4; In some cases,LAN hubs 10, 20 accommodate workstations instead of personal computers 1-4.

个人计算机1、2、3、4具有IEEE802.3LAN接口，如10BASE-T通信端口以及TCP(UDP)/IP通信协议。各个PC1、2分别通过符合IEEE802.3的LAN接口1a、2a与LAN集线器10相连，PC3、4通过同样的IEEE802.3的LAN接口3a、4a与LAN集线器20相连。各个声音电话机5、6、7，8分别具有送话功能和受话功能，但不一定非得具备呼叫控制信息的发送接收功能。Thepersonal computers 1, 2, 3, 4 have IEEE802.3 LAN interfaces, such as 10BASE-T communication ports and TCP (UDP)/IP communication protocols. ThePCs 1 and 2 are respectively connected to theLAN hub 10 through LAN interfaces 1a and 2a conforming to IEEE802.3, and thePCs 3 and 4 are connected to theLAN hub 20 through the same IEEE802.3LAN interfaces 3a and 4a. Each voice telephone set 5, 6, 7, 8 has the function of sending and receiving calls respectively, but does not necessarily have the function of sending and receiving call control information.

各个TLA30、40分别具有多组2线式数字声音电话机用接口(以下，简称为声音接口)和符合IEEE802.3规定的2个LAN接口。各个声音电话机5、6通过TLA30所具有的声音接口5a、6a分别与TLA30相连，而声音电话机7、8则分别通过TLA40所具有的声音接口7a、8a与TLA40相连接。Each of theTLAs 30 and 40 has a plurality of 2-wire digital voice telephone interfaces (hereinafter, simply referred to as voice interfaces) and two LAN interfaces conforming to IEEE802.3. Thevoice phones 5 and 6 are respectively connected to the TLA30 through thevoice interfaces 5a and 6a of the TLA30, while thevoice phones 7 and 8 are respectively connected to the TLA40 through thevoice interfaces 7a and 8a of the TLA40.

各个LAN集线器10、20通过符合IEEE802.3规定的LAN接口10a、20a与LAN交换装置50相连。EachLAN hub 10, 20 is connected to aLAN switch 50 through aLAN interface 10a, 20a conforming to IEEE802.3.

各个TLA30、40均具有的2个LAN接口中的一个30a，40a分别与LAN交换装置50的一个端口相连。以下，将接口30a、40a称作LAN-SW接口。各个TLA30、40所具有的2个LAN接口中的另一个接口30b、40b为第2LAN接口，分别与各个LAN集线器10、20上的一个端口相连。以下，把这些端口30b、40b称作LAN-HUB接口。One of the twoLAN interfaces 30 a and 40 a each of theTLAs 30 and 40 is connected to one port of theLAN switch 50 . Hereinafter, theinterfaces 30a and 40a are referred to as LAN-SW interfaces. Theother interface 30b, 40b of the two LAN interfaces of eachTLA 30, 40 is a second LAN interface, and is connected to one port of eachLAN hub 10, 20, respectively. Hereinafter, theseports 30b, 40b are referred to as LAN-HUB interfaces.

LAN交换装置50为LAN之间的连接器，具有使用LAN进行的数据通信中的帧交换功能，它根据LAN帧中的MAC地址进行交换切换操作。与该LAN交换装置50相连的是一个NS装置51，它们之间的连接通过IEEE802.3规定的接口51a来进行。TheLAN switching device 50 is a connector between LANs, has a frame switching function in data communication using LAN, and performs switching operations according to MAC addresses in LAN frames. Connected to thisLAN switching device 50 is anNS device 51, and the connection between them is performed through aninterface 51a specified in IEEE802.3.

NS装置51中存贮有LAN中的客户MAC地址及终端识别号码等数据库。对于来自LAN中的客户如PC1～5、LAN10、20，TLA30、40的询问，NS装置51具有提供数据库信息的功能。TheNS device 51 stores databases such as client MAC addresses and terminal identification numbers in the LAN.NS device 51 has the function of providing database information for inquiries from clients in LAN such as PC1-5, LAN10, 20, TLA30, 40.

图2为表示图1中的TLA30的构成的方框图。FIG. 2 is a block diagram showing the configuration ofTLA 30 in FIG. 1 .

TLA30具有TLA控制单元30A和接口组件单元30B。TheTLA 30 has aTLA control unit 30A and aninterface assembly unit 30B.

TLA控制单元30A具有：与LAN-SW接口30a相连的LANC电路31与该LANC电路31相连的PF电路32。AAL1电路33连接至PF电路32，HWIF电路34及PLL电路35连接至ALL1电路33。上述PLL电路35的输出端也连接至HWIF电路34。HWIF路34与接口组件单元30B之间构成输入输出关系。TLA控制单元中还设有CPU36和LAN电路板37。CPU36具有控制LANC电路31、PF电路32、AAL1电路33、HWIF电路34及LAN电路板37的构成。LAN电路板37与LAN-HUB接口30b相连接。另一方面，在接口组件单元30B中设有TI电路38。TI电路38连接至HWIF电路34上，同时，该TI电路38还通过线路对应单元39与声音接口5a相连接。接口组件单元30B中收容着除声音电话机5以外的多个电话机。因此，虽然图2中有所省略，TI电路38和线路对应单元39是与上述的多个电话机对应地设置的。各TI电路38也受CPU36的控制。TLA40的内部结构与TLA30相同。TheTLA control unit 30A has aLANC circuit 31 connected to the LAN-SW interface 30a, and aPF circuit 32 connected to theLANC circuit 31 . TheAAL1 circuit 33 is connected to thePF circuit 32 , and theHWIF circuit 34 and thePLL circuit 35 are connected to theALL1 circuit 33 . The output terminal of the above-mentionedPLL circuit 35 is also connected to theHWIF circuit 34 . An input-output relationship is formed between theHWIF circuit 34 and theinterface component unit 30B. ACPU 36 and aLAN circuit board 37 are also provided in the TLA control unit. TheCPU 36 is configured to control theLANC circuit 31 , thePF circuit 32 , theAAL1 circuit 33 , theHWIF circuit 34 , and theLAN circuit board 37 . TheLAN circuit board 37 is connected to the LAN-HUB interface 30b. On the other hand, aTI circuit 38 is provided in theinterface block unit 30B. TheTI circuit 38 is connected to theHWIF circuit 34 , and at the same time, theTI circuit 38 is also connected to theaudio interface 5 a through aline corresponding unit 39 . A plurality of telephone sets other than the voice telephone set 5 are accommodated in theinterface block unit 30B. Therefore, although omitted in FIG. 2, theTI circuit 38 and theline corresponding unit 39 are provided corresponding to the above-mentioned plurality of telephone sets. EachTI circuit 38 is also controlled by theCPU 36 . The internal structure of TLA40 is the same as TLA30.

图3为用于说明图1中使用的MAC帧格式的示意图。FIG. 3 is a schematic diagram for explaining a MAC frame format used in FIG. 1 .

在本实施例中，采用了MAC(Media Access Control)帧作为帧格式。如图3所示，MAC帧由前序部(PA)、SFD(Start Frame Delimiter，起始帧分界符)、硬件DA(Destination Address，终点地址)、硬件SA(Source Address，源地址)、ETYPE、数据部以及帧检查序列(FCS)构成。在图1中所示的声音交换系统中，声音数据被进行数据包化处理。声音数据包帧中，MAC帧的数据部分适用ATM(Asynchronous TransferMode，异步传输模式)AAL1型(JT1.363)帧。ATM·AAL1型帧由ATM头部、具有漂移吸收功能的SAPDU-H字段以及声音数据段构成。下面一边参考图3，一边描述TLA30内各部分的功能。In this embodiment, a MAC (Media Access Control) frame is adopted as the frame format. As shown in Figure 3, the MAC frame consists of the preamble (PA), SFD (Start Frame Delimiter, start frame delimiter), hardware DA (Destination Address, end point address), hardware SA (Source Address, source address), ETYPE , data part and frame check sequence (FCS). In the voice switching system shown in FIG. 1, voice data is packetized. In the sound data packet frame, the data part of the MAC frame is suitable for ATM (Asynchronous Transfer Mode, asynchronous transfer mode) AAL1 type (JT1.363) frame. ATM·AAL1 type frame is composed of ATM header, SAPDU-H field with drift absorption function and voice data segment. Next, referring to FIG. 3, the functions of each part in theTLA 30 will be described.

LANC电路31是产生和分解MAC帧的电路。LAN电路板37构成用于与其他PC等进行控制信息通信的IEEE802.3LAN接口。PF电路32用于在从LANC电路31中接收到的MAC帧中去除MAC地址，取出图3中的ATM·AAL1型帧，并把它加到AAL1电路33上。另外，PF电路32具有在AAL1电路33中经编辑的ATM·AAL1型帧上加上CPU36指定的MAC地址、发送数据的长度和控制位(CTL)之后送至LANC电路31中的功能。TheLANC circuit 31 is a circuit that generates and decomposes MAC frames. TheLAN circuit board 37 constitutes an IEEE802.3 LAN interface for communicating control information with other PCs and the like. ThePF circuit 32 is used to remove the MAC address from the MAC frame received from theLANC circuit 31, take out the ATM·AAL1 type frame in FIG. 3, and add it to theAAL1 circuit 33. In addition, thePF circuit 32 has the function of adding the MAC address specified by theCPU 36, the length of the transmission data and the control bit (CTL) to the edited ATM·AAL1 type frame in theAAL1 circuit 33 and then sending it to theLANC circuit 31.

AAL1电路33将从接口组件单元30B以时分复用方式接收到的声音数据变换成ATM·AAL1型帧，然后送至PF电路32；同时，将从PF电路接收到的ATM·AAL1型数据包变换成时分复用接口，并送至接口组件单元30B。AALI电路33具有吸收由非同步接口引起的声音数据包到达时间差(亦即所谓的“漂移”)的功能。TheAAL1 circuit 33 transforms the voice data received from theinterface assembly unit 30B into an ATM AAL1 type frame, and then sends it to thePF circuit 32; meanwhile, converts the ATM AAL1 type data packet received from the PF circuit into a time-division multiplexing interface and sent to theinterface assembly unit 30B. TheAALI circuit 33 has a function of absorbing the difference in the arrival time of the voice packets (so-called "drift") caused by the asynchronous interface.

HWIF电路34为了与接口组件单元30B之间进行对接，使用PLL电路35产生用于进行时分复用传输的同步信号，并与接口组件单元30B以时分复用方式进行声音和控制数据的发送和接收。另外，HWIF电路34保持从CPU36下载的数据，对于声音电话机送出无声模式、保持或者音调振铃等信号；同时，还具有对于从PC接收到的下载数据进行PAD调制的功能。接口组件单元30B中的TI电路38根据来自HWIF电路34的同步信号进行线路的帧格式变换，并且以时分复用方式与该HWIF电路34进行声音和控制数据的发送和接收。In order to interface with theinterface component unit 30B, theHWIF circuit 34 uses thePLL circuit 35 to generate a synchronization signal for time-division multiplexed transmission, and transmits and receives voice and control data with theinterface component unit 30B in a time-division multiplexed manner . In addition, theHWIF circuit 34 holds the data downloaded from theCPU 36, and sends signals such as silent mode, hold, or tone ringing to the voice telephone; meanwhile, it also has the function of performing PAD modulation on the downloaded data received from the PC. TheTI circuit 38 in theinterface component unit 30B performs line frame format conversion according to the synchronous signal from theHWIF circuit 34, and transmits and receives voice and control data with theHWIF circuit 34 in a time-division multiplexing manner.

图4是图1中的操作顺序图，图中示出了发送方向和处理期间，其中发送方向上还加上了图11中的接口号码。下面，一边参照图4，一边说明从与PC1并列设置的声音电话机5至与PC4并列设置的声音电话机8进行发送、通话及挂断时的操作。这里，各TLA30、40的LAN-SW接口30b、40b和LAN-SW接口30a、40a上分别加上的MAC地址，各TLA30、40中收容的声音电话机通过图3中的ATM头部内的VPI/VCI号码或者该图的CTL位中使用的电话机号码来确定。PC或者工作站1-4以及NS装置51上也分别加上了无需其他特别条件的MAC地址。另外，在本实施例中，图4中所示的接口5a、30a、40a和8a以外的接口上的通信使用例如TCP/IP通信协议。Fig. 4 is an operation sequence diagram in Fig. 1, which shows the sending direction and the processing period, where the interface number in Fig. 11 is also added to the sending direction. Next, referring to FIG. 4 , the operations for sending, talking and hanging up from thevoice telephone 5 installed in parallel with thePC 1 to thevoice telephone 8 installed in parallel with thePC 4 will be described. Here, the MAC addresses added respectively on the LAN-SW interface 30b, 40b of each TLA30, 40 and the LAN-SW interface 30a, 40a, the voice telephone set accommodated in each TLA30, 40 passes through the ATM head in Fig. 3 The VPI/VCI number or the telephone set number used in the CTL bits of the map. MAC addresses without other special conditions are also added to the PCs or workstations 1-4 and theNS device 51 respectively. In addition, in this embodiment, communications on interfaces other than theinterfaces 5a, 30a, 40a, and 8a shown in FIG. 4 use, for example, the TCP/IP communication protocol.

首先进行用于通信的呼叫控制。Call control for communication is performed first.

声音电话机5的用户从PC1向NS装置51询问PC4的信息(包括PC4的MAC地址、IP地址)和电话机8的信息(包括TLA40的LAN-HUB接口40b以及LAN-SW接口40a的MAC地址、声音电话机8的号码)，并取得这些信息(图4中的(A))。进行上述询问使用的是与LAN集线器10和LAN交换装置50相连接的接口1a，10a和51a。The user of voice telephone set 5 asks the information of PC4 (comprising the MAC address of PC4, IP address) and the information of telephone set 8 (comprising the MAC address of LAN-HUB interface 40b of TLA40 and LAN-SW interface 40a) toNS device 51 from PC1 , the number of the voice telephone 8), and obtain these information ((A) in FIG. 4 ). The above inquiry is performed using theinterfaces 1a, 10a and 51a connected to theLAN hub 10 and theLAN switch 50.

收到上述信息的PC1经接口1a、10a、20a和40a向PC4送出呼叫设定请求(SET-UP)信息。该呼叫设定请求信息中含有TLA30的LAN-SW接口30a的MAC地址和声音电话机5的号码。PC1 having received the above information sends a call setup request (SET-UP) message to PC4 viainterfaces 1a, 10a, 20a and 40a. The call setting request information includes the MAC address of the LAN-SW interface 30a of theTLA 30 and the number of thevoice telephone 5 .

PC4在收到上述的呼叫设定请求SET-UP信息之后，将其作为来呼请求处理，使用与呼叫设定请求顺序相反的接口4a、20a、10a和1a发出“正在呼出”信息(ALERT)。当PC4检测到用户通过键盘输入等方式进行的应答时，即向PC1送出应答(CONN)信息。在这次发送中，使用的是与正在呼出信息相同的接口4a、20a、10a和1a。另外，PC4为了给从声音电话机8→声音电话机5的方向上的声音数据选定路由，还把声音电话机8的号码信息、TLA30的MAC地址以及声音电话机的号码信息发送到TLA40的LAN-HUB接口40b上。这次发送由于是通过LAN交换装置50和LAN集线器20进行的，故使用的是接口4a、20a和40a。上述的信息通过TLA40内的LAN电路板37送给CPU36。PC4, after receiving the above-mentioned call setting request SET-UP information, treats it as an incoming call request, and uses theinterfaces 4a, 20a, 10a and 1a in the reverse order of the call setting request to send "outgoing" information (ALERT) . When PC4 detects the user's response through keyboard input, etc., it sends a response (CONN) message to PC1. In this transmission, thesame interfaces 4a, 20a, 10a and 1a as the outgoing message are used. In addition, PC4 also sends the number information of thevoice telephone 8, the MAC address of the TLA30 and the number information of the voice telephone to the TLA40 in order to route the voice data in the direction from thevoice telephone 8→thevoice telephone 5. on the LAN-HUB interface 40b. Since this transmission is performed through theLAN switch 50 and theLAN hub 20, theinterfaces 4a, 20a, and 40a are used. The above-mentioned information is sent to theCPU 36 through theLAN circuit board 37 in theTLA 40 .

TLA40在收到上述信息后，在与声音电话机8的号码向对应的声音数据上加上TLA30的LAN-SW接口30a的MAC地址和声音电话机5的号码，然后，以图3所示的格式经LAN-SW接口40a向LAN交换装置50送出。TLA40, after receiving above-mentioned information, adds the MAC address of the LAN-SW interface 30a of TLA30 and the number of voice telephone set 5 on the voice data corresponding to the number of voice telephone set 8, then, with the number shown in Figure 3 The format is sent to theLAN switching device 50 via the LAN-SW interface 40a.

另一方面，在收到来自PC4的应答之后，PC1把用于给从声音电话机5→声音电话机8的方向上的声音数据选定路由的声音电话机5的号码信息、TLA40的MAC地址以及声音电话机8的号码信息经过接口1a和LAN集线器10送到TLA30的LAN-HUB接口30b上。这些信息经过TLA30内的LAN电路板37加到CPU36上。On the other hand, after receiving the response from PC4, PC1 sends the number information ofvoice telephone 5 and the MAC address ofTLA 40 for routing voice data in the direction fromvoice telephone 5→voice telephone 8. And the number information of voice telephone set 8 is sent on the LAN-HUB interface 30b of TLA30 through interface 1a andLAN concentrator 10. These messages are added to theCPU 36 via theLAN circuit board 37 in theTLA 30.

TLA30在收到上述信息之后，在与声音电话机5的号码相对应的声音数据上加上TLA40的LAN-SW接口40a的MAC地址以及声音电话机8的号码，然后用图3中所示的格式向LAN交换装置50送出(图4中的(B))。TLA30, after receiving above-mentioned information, adds the MAC address of the LAN-SW interface 40a of TLA40 and the number of voice telephone set 8 on the voice data corresponding to the number of voice telephone set 5, then uses the number shown in Fig. 3 The format is sent to the LAN switching device 50 ((B) in FIG. 4 ).

这样，声音数据包经过接口5a、30a、40a和8a的路由选择就完成了，声音电话机5和声音电话机8之间就进入了通话状态(图4中的(C))。Like this, the route selection of voice data packet throughinterface 5a, 30a, 40a and 8a has just been completed, and just entered conversation state ((C) in Fig. 4) between voice telephone set 5 and voice telephone set 8.

声音电话机5的用户想结束通话时，从PC1将挂断(DISC)信息经接口1a、10a、20a和4a送给PC4。同时，向TLA30发出释放连接的指示。对TLA30发出的指示经过接口1a、10a加至LAN交换装置50，再从该LAN交换装置50经过接口10a、30b送至TLA30。When the user ofvoice telephone 5 wants to end the call, PC1 sends a hangup (DISC) message to PC4 viainterfaces 1a, 10a, 20a, and 4a. At the same time, an instruction to release the connection is sent to TLA30. Instructions sent to TLA30 are sent toLAN switching device 50 throughinterfaces 1a and 10a, and then sent fromLAN switching device 50 to TLA30 throughinterfaces 10a and 30b.

TLA30在接收到释放连接的指示之后；停止发送与声音电话机8的号码相对应的声音数据包；且在声音电话机8的下行声音数据中，由TLA30中的HWIF电路34送出无声模式。另一方面，收到挂断信息的PC4向TLA40发出释放连接的指示。以后的操作与TLA30相同(图4中的(D))。After TLA30 receives the instruction of release connection; Stop sending the voice data packet corresponding to the number of voice telephone set 8; On the other hand, the PC4 receiving the hangup message sends an instruction to release the connection to the TLA40. Subsequent operations are the same as for TLA30 ((D) in FIG. 4 ).

下面描述声音数据帧(信道中的数据)的构成。The constitution of the sound data frame (data in the channel) is described below.

图2中所示的与LAN集线器进行对接的接口组件单元30B与大量声音电话机(比方说，32条线路)连接，这些线路上的帧格式具有B1信道和D信道。声音数据通过B1信道、其他控制信息通过D信道进行发送和接收。接口组件单元30B中的TI电路38在来自HWIF电路34的同步信号的作用下，进行线路上的帧格式和时分复用接口(以下称“高速路”)变换。The LAN hub-interfacinginterface block unit 30B shown in FIG. 2 is connected to a large number of voice telephone sets (say, 32 lines) on which the frame format has B1 channel and D channel. Voice data is transmitted and received through the B1 channel, and other control information is transmitted and received through the D channel. TheTI circuit 38 in theinterface component unit 30B, under the action of the synchronous signal from theHWIF circuit 34, performs frame format and time-division multiplexing interface (hereinafter referred to as "highway") conversion on the line.

根据CPU36的指示，HWIF电路34对于下行声音信道可选择进行与AAL1的中继或者送出无声模式，保持、振铃音调数据。AAL1电路33将从接口组件单元30B经过HWIF电路34送来的声音数据变换成ATM，AAL1帧(JT-I.363)。这时，进行变换以吸收非同步网中声音数据包的到达时间差的变动。在AAL1电路单元33中进行数据包化处理的是图3中作为(i)表示的范围。According to the instructions of CPU36,HWIF circuit 34 can choose to relay with AAL1 or send silent mode, hold and ring tone data for the downlink voice channel. TheAAL1 circuit 33 converts the audio data sent from theinterface block unit 30B via theHWIF circuit 34 into ATM, AAL1 frames (JT-I.363). At this time, conversion is performed to absorb fluctuations in the arrival time difference of voice packets in the asynchronous network. Packetization processing is performed in theAAL1 circuit unit 33 in the range shown as (i) in FIG. 3 .

PF电路32根据来自CPU36的指示，在AAL1电路33中经过数据包处理的声音数据上加上呼叫发生时指定的IEEE802.3的MAC帧的DA、SA、ETYPE和CTL位，然后向LANC电路31送出。图3中(ii)所示的范围是在PF电路32中进行数据包化的范围。LANC电路31在此基础上再加上PA、SFD、FCS，进行如图3中的(iii)所示的完全的IEEE802.3MAC帧化后，向LAN交换装置50送出。ThePF circuit 32 adds DA, SA, ETYPE and the CTL bit of the MAC frame of the IEEE802.3 specified when the call takes place on the voice data processed by the data packet in theAAL1 circuit 33 according to instructions from the CPU36, and then sends to theLANC circuit 31 send out. The range shown in (ii) in FIG. 3 is the range where packetization is performed in thePF circuit 32 .LANC circuit 31 adds PA, SFD, and FCS on this basis, performs complete IEEE802.3MAC framing as shown in (iii) in FIG. 3 , and sends it toLAN switching device 50 .

综上所述，本发明的第1实施例具有如下的优点。In summary, the first embodiment of the present invention has the following advantages.

(1)在包含LAN交换装置50和收容PC1～4或工作站等设备的LAN集线器10、20的LAN中，通过添加TLA30、40，就可以不需PBX便能进行声音通信。(1) By addingTLAs 30 and 40 to the LAN including theLAN switching device 50 and theLAN hubs 10 and 20 forhousing PCs 1 to 4 and workstations, voice communication can be performed without a PBX.

(2)与呼叫控制有关的信息由PC1～4进行控制，故声音电话机5～8中无需送出选择信号用的10个数字键，电话机的构成可以非常简单。(2) The information relevant to call control is controlled by PC1～4, so there is no need to send 10 numeric keys for selecting signals in the voice telephone sets 5～8, and the constitution of the telephone set can be very simple.

(3)LAN中经数据包化后再发送的声音数据包帧，采用的是分配给MAC帧的数据部的、图3中所示的ATM·AAL1型帧构成。因此，与用例如UDP/IP帧进行分配的情况相比，声音数据包的溢出操作较少，吞吐量能得到提高。同时，协议处理比较容易，因进行数据包化处理而产生的延迟时间比较少。另外，装置外的路由选择无需路由器来处理，同时，可以由LAN交换装置50来进行MAC帧级别上的处理，这样，路由选择所需的延迟时间可以减少，在声音通信中特别成问题的由延迟引起的声音质量的劣化可以减少。(3) The audio packet frame transmitted after being packetized in the LAN adopts the ATM·AAL1 type frame structure shown in FIG. 3 allocated to the data portion of the MAC frame. Therefore, compared with the case of allocation using, for example, UDP/IP frames, the overflow operation of voice packets is less, and the throughput can be improved. At the same time, the protocol processing is relatively easy, and the delay time caused by the packetization processing is relatively small. In addition, routing outside the device does not need to be processed by a router, and at the same time, processing at the MAC frame level can be performed by theLAN switching device 50, so that the delay time required for routing can be reduced, which is particularly problematic in voice communications. Deterioration of sound quality caused by delay can be reduced.

另外，分配给MAC帧数据部的声音帧吸收了由ATM·AAL1产生的变动，从而能够吸收LAN交换装置50云集状态下声音数据包的到达时间的变化，保证在LAN中进行自然的对话。In addition, the audio frames assigned to the MAC frame data part absorb fluctuations caused by ATM·AAL1, thereby absorbing changes in the arrival time of audio data packets whenLAN switching devices 50 are gathered, and ensuring natural conversations in the LAN.

(4)由于具备与LAN-HUB接口40b相独立的LAN-SW接口40a，与其他PC或工作站的数据不会发生冲突，因此，每个装置上声音电话机的收容数量可以很容易地计算出来。举例来说，当全部都是双重10BASE-T时线路的运行吞吐量如为6.144Mb/s的话，声音数据每个信道为64Kb/s时一个接口可以保证能收容94条线路。(4) Since there is a LAN-SW interface 40a independent of the LAN-HUB interface 40b, there will be no conflict with data from other PCs or workstations. Therefore, the number of voice telephones on each device can be easily calculated . For example, if the operating throughput of the line is 6.144Mb/s when all are dual 10BASE-T, one interface can guarantee to accommodate 94 lines when each channel of voice data is 64Kb/s.

(5)通过增设收容在LAN交换装置50中的TLA30、40...可以简单地适应大容量化的需要，规模扩展相对于对收容线路的最大容量有限制的PBX而言也是容易实现的。(5) By addingTLAs 30, 40... accommodated in theLAN switching device 50, the need for increased capacity can be easily met, and scale expansion is also easy to implement compared to PBXs that have limitations on the maximum capacity of accommodated lines.

第2实施例2nd embodiment

图5是作为本发明的第2实施例的LAN通信方法的顺序图。FIG. 5 is a sequence diagram of a LAN communication method as a second embodiment of the present invention.

在第1实施例中，存在着如PC4的电源关断时就不能呼叫声音电话机8的问题。即，在上述的第1实施例中，与声音电话机之间的通信有关的呼叫控制由PC1、4来进行，如果呼入方的PC4的电源是关断状态，呼叫将无法进行。本发明的第2个实施例是一种对上述问题进行改进的LAN通信方法。In the first embodiment, there is a problem that thevoice telephone 8 cannot be called when the power of thePC 4 is turned off. That is, in the above-mentioned first embodiment, the call control related to the communication between the voice telephones is carried out by the PC1, 4, and if the power of the PC4 of the caller is turned off, the call cannot be carried out. The second embodiment of the present invention is a LAN communication method which improves the above problems.

图5中与表示第1实施例的图4不同的只是(B2)所表示的部分，其他的(A)、(B)、(C)所表示的部分与第1实施例相同。下面将只对(B2)的部分进行描述。另外，只要没有特别的表示，下面所说的“信息”是指与第1实施例相同的内容。In FIG. 5, the only difference from FIG. 4 showing the first embodiment is the part indicated by (B2), and the other parts indicated by (A), (B), and (C) are the same as those in the first embodiment. Only the part of (B2) will be described below. In addition, unless otherwise indicated, "information" referred to below refers to the same content as that of the first embodiment.

PC1通过图5中(A)所示的顺序接收到声音电话机8的信息后，向PC4发出呼叫设定请求(SET-UP)信息，同时启动一个软件定时器(CONN等待定时器)T0。PC4的电源关断时，对于呼叫设定请求将没有应答(ALERT、CONN)返回。T0发生超时(T·O)时，PC1向TLA40送出呼叫设定请求(HS-SET-UP)。送出的信息中包括TLA40的LAN-SW接口40a的MAC地址、声音电话机5的号码、被呼入的声音电话机8的号码以及PC的LAN中所必需的地址(MAC，IP等)，经接口1a、10a，20a送到LAN集线器20，再通过接口40b送至TLA40上。After PC1 receives the information ofvoice telephone 8 through the sequence shown in (A) in FIG. 5, it sends a call setting request (SET-UP) message to PC4, and starts a software timer (CONN waiting timer) T0 simultaneously. When the power of PC4 is turned off, no response (ALERT, CONN) is returned to the call setting request. When T0 times out (T·O), PC1 sends a call setup request (HS-SET-UP) to TLA40. The information sent includes the MAC address of the LAN-SW interface 40a of TLA40, the number of thevoice telephone 5, the number of thevoice telephone 8 called in and the necessary address (MAC, IP, etc.) in the LAN of the PC. Theinterfaces 1a, 10a, and 20a are sent to theLAN hub 20, and then sent to theTLA 40 through theinterface 40b.

TLA40在收到呼叫设定请求(HS-SET-UP)以后，将其识别为至声音电话机8的入呼，并通过声音接口8a的下行信道向声音电话机8送出振铃鸣响信号。同时，给PC1送回一个正在呼叫信号(HS-ALERT)，也就是说，告知其正在呼叫声音电话机8。这个信息的回送通过接口40b、LAN集线器20以及接口20a、10a、1a来进行。TLA40, after receiving the call setup request (HS-SET-UP), recognizes it as an incoming call to thevoice telephone 8, and sends a ringing signal to thevoice telephone 8 through the downlink channel of thevoice interface 8a. Simultaneously, send back a calling signal (HS-ALERT) to PC1, that is to say, tell it to call voice telephone set 8. This information is sent back via theinterface 40b, theLAN hub 20 and theinterfaces 20a, 10a, 1a.

另一方面，声音电话机8在收到振铃鸣响信号以后，鸣响振铃，通知用户有呼叫来到。声音电话机8的用户摘机时，声音电话机8经过声音接口8a的上行控制信道通知TLA40：用户已摘机。TLA40检测出声音电话机8已摘机后，向PC1送出应答(HS-CONN)信息，并在与声音电话机8的号码对应的声音数据上加上TLA30的LAN-SW接口30a的MAC地址和声音电话机5的号码之后，以图3中所示的格式向LAN交换装置50送出。On the other hand, thevoice telephone 8 rings and rings after receiving the ringing signal to notify the user that a call is coming. When the user of thevoice telephone 8 goes off-hook, thevoice telephone 8 notifies theTLA 40 via the uplink control channel of thevoice interface 8a that the user has gone off-hook. After TLA40 detects voice telephone set 8 off-hook, sends response (HS-CONN) information to PC1, and adds the MAC address and the LAN-SW interface 30a of TLA30 on the voice data corresponding to the number of voice telephone set 8 The number of thevoice telephone 5 is then sent to theLAN switching device 50 in the format shown in FIG. 3 .

另一方面，PC1在收到应答信息之后，把用于为声音电话机5→声音电话机8的方向上的声音数据选择路由的声音电话机5的号码、TLA40的MAC地址以及声音电话机8的号码等信息向TLA30的LAN-HUB接口30b送出。On the other hand, after PC1 receives the response information, the number of the voice telephone set 5, the MAC address of the TLA40, and the voice telephone set 8 for voice data in the direction of voice telephone set 5 → voice telephone set 8 are selected. The number and other information of the TLA30 are sent to the LAN-HUB interface 30b of the TLA30.

TLA30在收到这些信息后，在与声音电话机5的号码对应的声音数据上加上TLA40的LAN-SW接口40a的MAC地址和声音电话机8的号码，然后按图3中所示的格式向LAN交换装置50送出。TLA30, after receiving these information, adds the MAC address of the LAN-SW interface 40a of TLA40 and the number of voice telephone set 8 on the sound data corresponding to the number of voice telephone set 5, then by the format shown in Fig. 3 It is sent to theLAN switching device 50 .

综上所述，在上面的第2实施例中，由于即使被叫方的PC电源出于关断状态也能使用被叫方的声音电话机接口8a的控制信道通知有呼叫到达，并且能检测出应答，因此它既具有与第1实施例相同的优点，同时即使PC的电源被关断时也能对声音电话机8等进行呼叫，无论何时均能进行声音通信。In summary, in the second embodiment above, even if the PC power of the called party is in the off state, the control channel of thevoice telephone interface 8a of the called party can be used to notify that there is a call arrival, and it can detect Therefore, it has the same advantages as the first embodiment, and even when the power of the PC is turned off, thevoice telephone 8 can be called, and voice communication can be carried out no matter when.

第3实施例third embodiment

图6是作为本发明的第3实施例的TLA的构成方框图。Fig. 6 is a block diagram showing the structure of a TLA as a third embodiment of the present invention.

在上面的第1和第2实施例中，声音电话机虽然可以采取不需要10个数字键的简易结构，但是却不能收容一般的模拟用户电话。这里的第3实施例能将一般的模拟电话收容在LAN中。In above 1st and 2nd embodiment, although voice telephone set can take the simple structure that does not need 10 numeral keys, but can not accommodate general analog subscriber telephone. In the third embodiment here, a general analog telephone can be accommodated in a LAN.

这里的TLA具有与图2相同的TLA控制单元和与图2不同的接口组件60。The TLA here has the same TLA control unit as in FIG. 2 and an interface assembly 60 different from that in FIG. 2 .

从接口组件60至外部的接口为一般模拟用户的线路接口，目前普及的一般模拟电话机、G3传真机等终端均可以与这种接口相连接。The interface from the interface component 60 to the outside is a line interface of a general analog user, and terminals such as general analog telephones and G3 facsimile machines that are popular at present can be connected with this interface.

接口组件60具有对于交换机中的模拟用户线路而言必要的所谓BORSCHT功能，进行加电、振铃、拨号脉冲(PB/DP)监视等操作。接口组件60与TLA控制单元30A中的CPU36之间进行选择信号接收结果等与呼叫控制有关的信息的接收和发送。CPU36将与接口组件60之间接收和发送的、与呼叫控制有关的信息变换成TCP/IP等的LAN上的呼叫控制顺序(与第1实施例相同)。这样，接口组件60和CPU36就构成了具有将与模拟用户线路的呼叫控制相关的信号(例如摘机信号、拨号信号、振铃信号及挂机信号等)变换成LAN中的呼叫控制协议的功能的装置。亦即，CPU36具有与上面的第1和第2实施例中所述的PC1-4的功能相同的功能。The interface module 60 has a so-called BORSCHT function necessary for an analog subscriber line in a switch, and performs operations such as power-on, ringing, dial pulse (PB/DP) monitoring, and the like. The interface unit 60 receives and transmits information related to call control such as selection signal reception results and the like with theCPU 36 in theTLA control unit 30A. TheCPU 36 converts the call control-related information received and transmitted between the interface unit 60 into a call control procedure on a LAN such as TCP/IP (same as the first embodiment). In this way, the interface component 60 and theCPU 36 constitute a function of converting signals related to the call control of the analog subscriber line (such as off-hook signals, dial signals, ringing signals, and on-hook signals, etc.) into call control protocols in the LAN. device. That is, theCPU 36 has the same functions as those of the PCs 1-4 described above in the first and second embodiments.

因此，在本发明的这个第3实施例中，在LAN中的声音电话机中可以收容一般的模拟用户，还可以收容通用终端、模拟电话、G3传真等。Therefore, in the third embodiment of the present invention, general analog users, general-purpose terminals, analog telephones, G3 facsimiles, etc. can be accommodated in the voice telephone set in the LAN.

第4实施例4th embodiment

相对于图2或图6中所示的TLA30、40而言，第4实施例中的TLA中增加了将来自被收容的多个声音电话机的声音数据变换成UDP/IP(或者TCP/IP)数据包的功能和经过LAN-HUB接口30B、40B对这些数据包进行发送和接收的功能。Compared with TLA30, 40 shown in Fig. 2 or Fig. 6, in the TLA in the 4th embodiment, the voice data from a plurality of voice telephone sets that are accommodated is converted into UDP/IP (or TCP/IP ) data packets and the function of sending and receiving these data packets through the LAN-HUB interfaces 30B and 40B.

具备这样的功能时，可以由例如TLA30中的TLA控制单元30A进行把从接口组件30B或者60得到的声音数据变换成UDP/IP(或者TCP/IP)数据包的处理。与呼叫控制有关的信息用TCP/IP通信协议进行发送和接收。该处理中得到的UDP/IP(或者TCP/IP)数据包送至LAN-HUB接口30b。该LAN-HUB接口30b上如果接有路由器的话，数据包就通过该路由器送至外部网络。When such a function is provided, for example, theTLA control unit 30A in theTLA 30 can perform the process of converting the audio data obtained from theinterface unit 30B or 60 into UDP/IP (or TCP/IP) packets. Information related to call control is sent and received using the TCP/IP communication protocol. The UDP/IP (or TCP/IP) packet obtained in this process is sent to the LAN-HUB interface 30b. If there is a router connected to the LAN-HUB interface 30b, the data packet will be sent to the external network through the router.

综上所述，在上面的第4实施例中，由于在LAN-HUB接口上连接了能通过路由器等的IP地址进行路由选择的装置，因此可以经过IP网络(例如因特网)与LAN中的声音电话机5～8进行通信。In summary, in the above 4th embodiment, because the device that can carry out route selection through the IP address of router etc. is connected on the LAN-HUB interface, therefore can pass through IP network (for example Internet) and the voice in LAN Telephones 5-8 communicate.

另外，本发明并不限于上述的实施例，还可以作出种种变形。这些变形例可以有例如下面的几种。In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made. These modified examples may include, for example, the following types.

(1)在图1中的声音交换系统中，NS装置51是连接至LAN交换装置50的。实际上，与LAN集线器10、20任意连接的话，也是可以适用的。(1) In the voice switching system in FIG. 1 , theNS device 51 is connected to theLAN switching device 50 . In fact, any connection to theLAN hub 10, 20 is also applicable.

(2)图1中的NS装置51可以内置在TLA30、40中。(2) TheNS device 51 in FIG. 1 may be built in theTLA 30 , 40 .

(3)上述的各个TLA30、40和各LAN集线器10、20都是由单独的装置构成的，实际上，用将TLA30及LAN集线器10、TLA40及LAN集线器20加以内置而形成的一体化装置来构成也是可以的。(3) The above-mentioned each TLA30, 40 and eachLAN hub 10, 20 are constituted by separate devices. Composition is also possible.

图7中示出的图1的一个变形例，它示出的是把TLA40和LAN集线器20一体化而构成的装置。这样一来，可以使一体化装置和与之相对的个人计算机(PC)4以及声音电话机(TEL)8之间的配线简单化。构成一对的声音电话机和PC通过一根标准的8芯电缆就可以和设在一体化装置上的连接器(如RJ-45)实现连接，非常简单。8根芯中有6根用于通信。A modified example of FIG. 1 shown in FIG. 7 shows a device in whichTLA 40 andLAN hub 20 are integrated. This can simplify the wiring between the all-in-one device and the personal computer (PC) 4 and voice telephone (TEL) 8 facing it. A pair of voice telephone and PC can be connected with a connector (such as RJ-45) on the integrated device through a standard 8-core cable, which is very simple. 6 of the 8 cores are used for communication.

另外，该一体化装置在不与声音电话机相接的状态下，可以作为单纯的LAN集线器来使用。In addition, this all-in-one device can be used as a simple LAN hub without being connected to a voice telephone.

(4)在上面的描述中，LAN中收容了多个TLA30，40，实际上，即使在LAN只设置唯一的一个TLA，也能得到与上述的实施例相同的效果。此时，一个TLA的LAN-SW接口被以折返连接的方式加以使用(无需LAN交换装置50)。(4) In the above description, a plurality ofTLAs 30, 40 are accommodated in the LAN. Actually, even if only one TLA is installed in the LAN, the same effect as that of the above-mentioned embodiment can be obtained. In this case, a TLA LAN-SW interface is used in a loopback connection (theLAN switching device 50 is not required).

(5)图8是增加了功能的TLA的方框图。(5) FIG. 8 is a block diagram of a TLA with added functions.

除了第4实施例中所述的功能外，还可以给TLA进一步增加声音压缩功能和传真收发功能，使之更有效地加以利用。图8中，TLA30的LAN-HUB接口侧的输入输出部分中，设有传真调制解调单元70和声音压缩单元80。传真调制解调单元70具有在模拟和数字之间进行变换的构成，可以通过路由器与G3传真机等外部网络进行发送和接收。In addition to the functions described in the fourth embodiment, a voice compression function and a facsimile transmission and reception function can be further added to the TLA so that they can be used more effectively. In FIG. 8, a facsimile modem unit 70 and a voice compression unit 80 are provided in the input/output portion of the LAN-HUB interface side of the TLA30. The facsimile modem unit 70 has a configuration for converting between analog and digital, and can transmit and receive through external networks such as routers and G3 facsimile machines.

声音压缩单元80具有对声音数据进行压缩的功能：具有最大为例如8kb/s的可变压缩率。通过设置声音压缩单元80，可以与外部网络之间发送和接收经压缩了的声音数据。The sound compression unit 80 has a function of compressing sound data: it has a variable compression rate up to, for example, 8 kb/s. By providing the audio compression unit 80, it is possible to transmit and receive compressed audio data to and from an external network.

如上详述，采用上述第1发明的话，可以在无需PBX等设备的LAN中进行声音通信。As described in detail above, according to the above-mentioned first invention, voice communication can be performed in a LAN without requiring equipment such as a PBX.

采用第2发明的话，可以简化声音电话机的构造。因此，就不会与其他个人计算机或工作站发生冲突，每个装置所收容的声音电话机数也能容易地计算出来。According to the second invention, the structure of the voice telephone can be simplified. Therefore, there is no conflict with other PCs or workstations, and the number of voice phones accommodated by each device can be easily calculated.

采用第3发明的话，可以收容一般的模拟用户终端。因此，也就能收容与模拟用户接口相连接的G3传真机等装置。According to the third invention, general analog user terminals can be accommodated. Therefore, devices such as a G3 facsimile connected to the analog user interface can also be accommodated.

采用第4及第5发明的话，就能与LAN外部进行声音通信。According to the fourth and fifth inventions, voice communication with the outside of the LAN is possible.

采用第6发明的话，可以简化声音电话机的构造。According to the sixth invention, the structure of the voice telephone can be simplified.

采用第7发明的话，即使在进行被呼叫方的呼叫控制的个人计算机或者工作站的电源被关断时，也能进行声音通信。According to the seventh invention, voice communication can be performed even when the power of the personal computer or the workstation that controls the call of the called party is turned off.

采用第8发明的话，与对收容线路的最大容量有限制的PBX比较而言，可以简单地适应于大容量化。According to the eighth invention, compared with the PBX which has a limitation on the maximum capacity of the accommodated line, it can be easily adapted to increase the capacity.

采用第9发明的话，与采用例如UDP/IP帧进行分配的情况相比，协议处理比较容易，进行数据包化处理而引起的延迟时间也少。另外，装置外的路由选择可以不用路由器来处理，而是由LAN交换装置在MAC帧级别上的处理来完成，路由选择所引起的延迟时间较少，声音通信中特有的问题即由延迟引起的声音质量的劣化也少。此外，还能吸收LAN交换装置云集时声音数据包的到达时间的变动，保证在LAN中能进行自然的对话。According to the ninth invention, compared with the case of distribution using, for example, UDP/IP frames, the protocol processing is relatively easy, and the delay time due to packetization processing is also small. In addition, the routing selection outside the device can not be handled by routers, but by the LAN switching device at the MAC frame level. The delay time caused by routing selection is less, and the unique problem in voice communication is caused by delay. There is little deterioration of sound quality, too. In addition, it can absorb fluctuations in the arrival time of voice packets when LAN switching devices are gathered, ensuring natural conversations in the LAN.

Claims (18)

Translated fromChinese

1.一种通过LAN进行通信的方法，所述LAN中设有：收容着进行数据通信的设备的多个LAN集线装置；多个声音电话机用集线装置；以及具有多个端口、在上述的多个LAN集线装置和上述的多个声音电话机用集线装置之间进行切换和连接的LAN交换装置，该方法的特征在于包括以下步骤：1. A method of communicating via a LAN, wherein the LAN is provided with: a plurality of LAN line collection devices accommodating devices for performing data communication; a plurality of line collection devices for voice telephones; The above-mentioned LAN switching device for switching and connecting between the above-mentioned multiple LAN hub devices and the above-mentioned multiple voice phone hub devices, the method is characterized in that it includes the following steps:接收和发送上述设备间的呼叫请求；Receive and send call requests between the above devices;根据呼叫请求接收和发送上述设备间呼出信息；Receive and send outbound information between the above devices according to the call request;根据用户回应接收和发送上述设备间的传送回应；Receive and send transmission responses between the above devices according to user responses;从上述设备向声音电话机用集线装置传送有关声音电话号码和MAC地址的信息；Transmitting information about the voice telephone number and MAC address from the above equipment to the hub for voice telephones;把声音数据转换成包含声音电话号码和MAC地址的MAC帧；Convert voice data into MAC frames containing voice phone numbers and MAC addresses;从声音电话机用集线装置向至少上述LAN交换装置或上述LAN集线装置传送MAC帧。A MAC frame is transmitted from the voice telephone line hub to at least the LAN switch or the LAN hub.2.如权利要求1所述的通过LAN进行通信的方法，其特征在于：当从被呼叫侧的所述设备没有收到应答时，使用该被呼叫侧的声音电话机接口的控制信道信号来发出呼叫请求到达通知并检测应答。2. The method for communicating through LAN as claimed in claim 1, characterized in that: when the equipment on the called side does not receive a response, use the control channel signal of the voice telephone interface on the called side to Send notification of call request arrival and detect answer.3.如权利要求1所述的通过LAN进行通信的方法，其特征在于还包括以下步骤：将MAC帧的数据块封装到具有吸收声音数据包到达时间变化的功能的帧中。3. The method for communicating via LAN as claimed in claim 1, further comprising the step of: encapsulating the data block of the MAC frame into a frame with the function of absorbing the variation of the arrival time of the sound data packet.4.一种通过LAN与声音电话机进行通信的系统，包括：4. A system for communicating with a voice telephone over a LAN, comprising:LAN交换装置；LAN switching device;进行数据通信并分别通过第一LAN接口与上述LAN交换装置连接的多个LAN集线装置；A plurality of LAN hub devices that perform data communication and are respectively connected to the above-mentioned LAN switching device through the first LAN interface;通过相应的第二LAN接口与LAN集线装置相连接的计算机；A computer connected to the LAN hub device through a corresponding second LAN interface;通过相应的第三LAN接口与LAN交换装置相连接的多个声音电话机用集线装置；以及A hub device for a plurality of voice telephones connected to the LAN switching device through the corresponding third LAN interface; and分别通过传送和接收数字或模拟声音数据的声音电话机接口与声音电话机用集线装置相连的声音电话机，Voice telephones connected to hubs for voice telephones via voice telephone interfaces for transmitting and receiving digital or analogue voice data, respectively,其中，声音电话机用集线装置用来从声音电话机接口接收数字或模拟声音数据，把它转换成MAC帧或IP包，并把转换后的MAC帧或IP包中继给第三LAN接口。Among them, the voice telephone set is used to receive digital or analog voice data from the voice telephone interface, convert it into MAC frame or IP packet, and relay the converted MAC frame or IP packet to the third LAN interface. .5.如权利要求4所述的系统，其中：每个声音电话机用集线装置包括CPU、与CPU连接的LAN电路板、以及连接在LAN电路板和LAN集线装置之间、用来传送和接收数据的第四LAN接口。5. The system as claimed in claim 4, wherein: each voice telephone set comprises a CPU, a LAN circuit board connected to the CPU, and is connected between the LAN circuit board and the LAN hub device for transmitting and the fourth LAN interface for receiving data.6.一种用于安装在包括至少LAN交换装置或LAN集线装置的LAN中的声音电话机的远程通信装置，包括：6. A telecommunication device for a voice telephone installed in a LAN comprising at least a LAN switching device or a LAN hub device, comprising:至少一个与至少上述LAN交换装置或上述LAN集线装置相连的LAN接口；At least one LAN interface connected to at least the above-mentioned LAN switching device or the above-mentioned LAN hub device;CPU；CPU;至少一个声音电话机；at least one voice telephone;一套声音电话机接口，包括用来在CPU和上述至少一个声音电话机之间接收和传送数字声音数据或模拟声音数据或呼叫控制数据的线路对应单元，a set of voice telephone interfaces comprising a line corresponding unit for receiving and transmitting digital voice data or analog voice data or call control data between the CPU and said at least one voice telephone,其中，CPU用来通过添加MAC地址、发送数据的长度和控制位把来自上述线路对应单元的数字和模拟声音数据或呼叫控制数据转换成IP包或MAC帧，并把IP包或MAC帧传送给至少一个LAN接口。Among them, the CPU is used to convert the digital and analog sound data or call control data from the corresponding unit of the above line into IP packets or MAC frames by adding the MAC address, the length of the sent data and the control bits, and transmit the IP packets or MAC frames to At least one LAN interface.7.如权利要求6所述的远程通信装置，还包括连接到至少一个LAN接口并且连接到LAN集线装置或LAN外部的路由器。7. The telecommunication device of claim 6, further comprising a router connected to at least one LAN interface and connected to a LAN hub device or outside the LAN.8.如权利要求6所述的远程通信装置，还包括与CPU和上述LAN交换装置相连、用来封装或解封装MAC帧的LANC电路。8. The remote communication device according to claim 6, further comprising a LANC circuit connected to the CPU and the LAN switching device for encapsulating or decapsulating the MAC frame.9.如权利要求6所述的远程通信装置，其中呼叫控制数据根据TCP/IP转换为呼叫控制协议。9. The telecommunication device of claim 6, wherein the call control data is converted to a call control protocol according to TCP/IP.10.如权利要求6所述的远程通信装置，其中所述一套声音电话机接口用来执行BORSCHT功能，该BORSCHT功能为电源供给、过电压保护、呼叫信号、监视、代码、2W-4W变换、用户测试功能的总称。10. The telecommunication device as claimed in claim 6, wherein said set of voice telephone interface is used to perform BORSCHT function, and the BORSCHT function is power supply, overvoltage protection, call signal, monitoring, code, 2W-4W conversion , The general term for user testing functions.11.一种用于安装在包括至少LAN交换装置或LAN集线装置的LAN中的声音电话机的远程通信装置，包括：11. A telecommunication device for a voice telephone installed in a LAN comprising at least a LAN switching device or a LAN hub device, comprising:至少一个与至少上述LAN交换装置或上述LAN集线装置相连的LAN接口；At least one LAN interface connected to at least the above-mentioned LAN switching device or the above-mentioned LAN hub device;CPU；CPU;至少一个声音电话机；at least one voice telephone;一套声音电话机接口，包括用来在CPU和上述至少一个声音电话机之间接收和传送数字声音数据或模拟声音数据或呼叫控制数据的线路对应单元，a set of voice telephone interfaces comprising a line corresponding unit for receiving and transmitting digital voice data or analog voice data or call control data between the CPU and said at least one voice telephone,其中，CPU用来通过添加MAC地址、发送数据的长度和控制位把来自上述线路对应单元的数字和模拟声音数据或呼叫控制数据转换成TCP/IP包或UDP/IP包，并把这些包传送给至少一个LAN接口。Among them, the CPU is used to convert the digital and analog sound data or call control data from the corresponding unit of the above line into TCP/IP packets or UDP/IP packets by adding the MAC address, the length of the sent data, and the control bits, and transmit these packets Give at least one LAN interface.12.如权利要求11所述的远程通信装置，还包括与至少一个LAN接口和LAN集线装置相连的路由器。12. The telecommunication device of claim 11, further comprising a router coupled to the at least one LAN interface and the LAN hub.13.如权利要求11所述的远程通信装置，还包括与至少一个LAN接口和外部网络相连的路由器。13. The telecommunication device of claim 11, further comprising a router coupled to the at least one LAN interface and the external network.14.一种通过LAN进行通信的方法，包括：14. A method of communicating over a LAN, comprising:在声音电话机接口和声音电话机之间接收和传送数字和模拟声音数据或呼叫控制数据；Receiving and transmitting digital and analog voice data or call control data between a voice telephone interface and a voice telephone;在声音电话机接口和声音电话机用集线装置中的CPU之间接收和传送数字和模拟声音数据或呼叫控制数据；Receiving and transmitting digital and analog voice data or call control data between a voice telephone interface and a CPU in a hub device for a voice telephone;通过用CPU添加MAC地址、发送数据的长度和控制位，把数字和模拟声音数据或呼叫控制数据转换成IP包或MAC帧；以及Convert digital and analog voice data or call control data into IP packets or MAC frames by adding MAC address, length of transmission data and control bits by CPU; andCPU把IP包或MAC帧通过LAN交换装置或LAN集线装置传送给声音电话机。The CPU sends the IP packet or MAC frame to the voice telephone through the LAN switching device or the LAN hub device.15.如权利要求14所述的通过LAN进行通信的方法，其中还包括从上述LAN交换装置或LAN集线装置向路由器传送IP包或MAC帧。15. The method for communicating via LAN as claimed in claim 14, further comprising transmitting IP packets or MAC frames from said LAN switching device or LAN hub device to a router.16.如权利要求14所述的通过LAN进行通信的方法，其中还包括从路由器向外部网络传送IP包或MAC帧。16. The method of communicating via LAN as claimed in claim 14, further comprising transmitting the IP packet or the MAC frame from the router to the external network.17.如权利要求14所述的通过LAN进行通信的方法，其中还包括向LAN集线装置传送IP包或MAC帧。17. The method of communicating over a LAN as claimed in claim 14, further comprising transmitting IP packets or MAC frames to the LAN hub device.18.如权利要求14所述的通过LAN进行通信的方法，其中还包括通过用CPU添加MAC地址、发送数据的长度和控制位，把数字和模拟声音数据转换成TCP/IP包或UDP/IP包。18. The method for communicating via LAN as claimed in claim 14, further comprising converting digital and analog sound data into TCP/IP packets or UDP/IP by adding MAC address, length of sending data and control bits with CPU Bag.

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