CN1231788A - Line concentrator for telephone set and communication method of lan - Google Patents
Line concentrator for telephone set and communication method of lan Download PDFInfo
- Publication number
- CN1231788A CN1231788A CN 97198216 CN97198216A CN1231788A CN 1231788 A CN1231788 A CN 1231788A CN 97198216 CN97198216 CN 97198216 CN 97198216 A CN97198216 A CN 97198216A CN 1231788 A CN1231788 A CN 1231788A
- Authority
- CN
- China
- Prior art keywords
- lan
- mentioned
- voice call
- interface
- line concentrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
Telephone sets are incorporated in a LAN. When, for example, a telephone set makes a call to a telephone section, the call is controlled by exchanging information between the personal computers provided to the telephone sets and through a LAN hub, a LAN switch device, and a LAN hub. The voice data of the telephone sets are respectively packeted in the data sections of MAC frames by means of TLAs and relayed to LAN-SW interfaces. To the data sections on the interfaces, frames having fluctuation absorbing functions are applied. The packeted voice data are respectively sent to the telephone sets through the lAN switch device and TLAs based on the MAC addresses of the MAC frames.
Description
The present invention relates to a kind of voice call machine of accommodating equipment such as voice call machine by the Local Area Network interface with the communication means among line concentrator and the LAN.
At present, generally in one was handled official business in-house communication, accommodating by PBX (Private Branch Exchange, inner exchanging machine) of voice call machine undertaken, and data communication is then undertaken by LAN, and both are independently.Particularly in recent years, along with the reduction of personal computer prices such as (hereinafter to be referred as PC) and the raising of performance, PC has popularized and has come, and almost can mention in the same breath with the voice call machine.Along with the appearance of this situation, people wish that in-company communication system can become the environment that LAN and voice call machine can both add.
But, in existing intracompany communication, have following problem.
Though can unify to constitute in-company fabric among the LAN by the voice call machine is housed in, but promptly periodically just in time opposite with the character of sudden and high reliability that mainly is the data communication carried out on LAN with real-time as " sound " distinctive character, it is very difficult to unite.As a result, the relevant devices of PBX equipment and LAN need be set, also need the distribution of 2 relevant therewith systems in intra-company.
The objective of the invention is to the unification of in-company communication fabric in LAN, need not PBX and can realize accommodating of voice call machine.
For addressing the above problem, among the application the 1st invention is a kind of line concentrator that is used for the voice call machine, and this line concentrator is arranged among the LAN that comprises with lower device: a plurality of interfaces of accommodating are switched the LAN switch of connection and are connected with above-mentioned LAN switch by above-mentioned interface respectively and accommodate a plurality of LAN line concentrators that carry out the equipment of data communication by LAN; Being constructed as follows of this line concentrator.
Have the LAN interface that is connected with above-mentioned LAN switch and 1 group of being connected or organize voice call machine interface more as the TLA of the 1st invention with 1 that is set up in parallel with above-mentioned device type or many voice call machines.In addition, this TLA has the voice data that will receive and send to them from above-mentioned 1 or many voice call machines and is transformed into mac frame with regular length and the function of only the voice data relaying of above-mentioned mac frameization being given above-mentioned LAN interface one side.
In this please in the 2nd invention be: in the TLA of the 1st invention, be provided with different with the LAN interface that is connected of above-mentioned LAN switch, between the CPU of device self inside and above-mentioned LAN line concentrator, realize sending and the 2LAN interface of reception.
The 3rd invention is: the TLA of the 1st invention has the function that the line signal of analog subscriber is transformed into the call control protocol among the TCP/IP, and has the formation of accommodating pseudo subscriber terminal.
The 4th invention is: be provided with 2LAN interface different with the LAN interface that is connected with above-mentioned LAN switch, that the CPU that installs self inside is sent and receives among the TLA of above-mentioned the 1st invention; And have and carry out TCP/IP calling control sequence and will be transformed into the function of TCP/IP packet or DUP/IP packet from the voice data that above-mentioned many voice call machines of accommodating are received and the function that sends and receive these TCP/IP packets or DUP/IP packet through above-mentioned mat woven of fine bamboo strips 2LAN interface.
The 5th invention is: be connected with the router that this 2LAN interface is connected with LAN outside or the selection of above-mentioned LAN line concentrator on the above-mentioned 2LAN interface among the TLA of the 4th invention.
The 6th invention is the communication means of a kind of LAN, and described LAN comprises: accommodating a plurality of LAN line concentrators that carry out data communication; As the described a plurality of TLA of the 1st invention; And the LAN switch that between the above-mentioned a plurality of LAN line concentrators with a plurality of ports and above-mentioned a plurality of TLA, switches connection; Above-mentioned LAN communication means is as follows.
That is,, carry out by the personal computer or the work station that are housed in the above-mentioned LAN line concentrator to the calling control that one or more voice call machine that is housed among the above-mentioned TLA carries out.
The 7th invention is: in the LAN communication means described in the 6th invention, when not calling out arrival notice and detection is replied from being received by the aforementioned calculation machine of call-side or work station when replying, using this control channel signals to send by the voice call machine interface of call-side.
The 8th invention is the communication means of a kind of LAN, is provided with among the described LAN: a plurality of TLS described in the 1st invention; Accommodating a plurality of LAN line concentrators that carry out the equipment of data communication by above-mentioned LAN; And switch with above-mentioned LAN of a plurality of ports; Above-mentioned LAN communication means is as follows.
Promptly, the Route Selection of communicating by letter relevant voice data bag with the voice call machine that carries out between above-mentioned voice call machine is with line concentrator, the handover operation of the switch of the above-mentioned LAN that is undertaken by the MAC Address in the above-mentioned mac frame of setting according to above-mentioned packet carries out.
The 9th invention is the communication means of a kind of LAN, is provided with among the described LAN: a plurality of LAN line concentrators of accommodating the equipment that carries out data communication; A plurality of TLA described in the 1st invention; And have a plurality of ports, between above-mentioned a plurality of LAN line concentrators and above-mentioned a plurality of voice call machines are with line concentrator, switch the LAN switch of connection; Above-mentioned LAN communication means is as follows.
That is, the data division in the mac frame is suitable for the frame of the function with variation time of advent that absorbs the voice data bag, and the voice data that the voice call machine is sent and received is carried out the data packetize and transmits on LAN more later on.
Adopt above-mentioned the 1st invention, because the formation of TLA as mentioned above, relaying was given LAN interface after the voice data that receive and that send to them of the voice call machine from be housed in TLA was transformed into mac frame, and was added on the LAN switch by this LAN interface.Switching by the LAN switch connects, and its voice data can be delivered on other voice call machines by other TLA.
Adopt the words of the 2nd invention, since in the TLA of the 1st invention, be provided with different with the LAN interface that is connected of above-mentioned LAN switch, between the CPU of device self inside and above-mentioned LAN line concentrator, realize sending and the 2LAN interface of reception, so can be in the 6th invention, realize that by being housed in personal computer in the LAN line concentrator or work station the calling of carrying out for the voice call machine that is housed among the TLA controls.
Adopt the 3rd invention, the analog subscriber circuit signal transformation that TLA sends the common acoustic telephone set becomes the call control protocol among the TCP/IP.That is, call out control, also can carry out controlling with the calling of telephone set in TLA one side without personal computer or work station.
Adopt the 4th and the words of the mat woven of fine bamboo strips 5 invention, because TLA is transformed into TCP/IP packet or DUP/IP packet to the voice data of receiving from the voice call machine, and the above-mentioned 2LAN interface of process sends and receives these TCP/IP packets or DUP/IP packet, therefore, can send with the network of LAN outside and receive through router from the voice call machine.
Adopt the 6th invention,, carry out by the personal computer or the work station that are housed in the above-mentioned LAN line concentrator to the calling control that one or more voice call machine that is housed among the above-mentioned TLA carries out.
Adopt the words of the 7th invention, in the LAN communication means described in the 6th invention, when not calling out arrival notice and detection is replied from being received by the aforementioned calculation machine of call-side or work station when replying, using this control channel signals to send by the voice call machine interface of call-side.
Adopt the 8th invention, the Route Selection of communicating by letter the voice data bag relevant with the voice call machine that carries out between the TLA, the MAC Address in the above-mentioned mac frame of setting according to above-mentioned packet is undertaken by the handover operation of the switch of above-mentioned LAN.
Adopt the 9th invention, the data division in the mac frame is suitable for the frame of the function with variation time of advent that absorbs the voice data bag, and the voice data that the voice call machine is sent and received is carried out the data packetize and transmits on LAN more later on.Like this, problem above-mentioned just can solve.
Fig. 1 is the formation block diagram of sound switching system among the LAN of expression the 1st embodiment of the present invention.
Fig. 2 is the block diagram of the formation of the TLA30 in the presentation graphs 1.
Fig. 3 is the schematic diagram that is used for the mac frame form that key diagram 1 adopted.
Fig. 4 is the schematic diagram of the operating sequence of presentation graphs 1.
Fig. 5 is the precedence diagram as the LAN communication means of the 2nd embodiment of the present invention.
Fig. 6 is the formation block diagram as the TLA of the 3rd embodiment of the present invention.
Fig. 7 is the schematic diagram of a variation of presentation graphs 1.
Fig. 8 is the additional block diagram that the TLA of function is arranged of expression.
Fig. 1 is the formation block diagram of sound switching system among the LAN of expression the 1st embodiment of the present invention.
Sound switching system among this LAN comprises: a plurality of personal computers as the information processing kind equipment (PC) 1,2,3,4; The voice call machine 5,6,7,8 that is provided with accordingly with them; Accommodate 2 LAN hubs 10,20 of these personal computers 1~4; 2 TLA30,40 of tut telephone set 5,6,7,8 have been accommodated.Under some occasion, what the LAN hub was accommodated is work station, rather than personal computer 1~4.
The 2 line formula digital audio telephone sets of group more than each TLA30,40 has respectively interfaces (below, abbreviate sound interface as) and meet 2 LAN interface that IEEE802.3 stipulates.Each voice call machine 5,6 links to each other with TLA30 respectively by sound interface 5a, 6a that TLA30 had, and voice call machine 7,8 then is connected with TLA40 by sound interface 7a, the 8a that TLA40 had respectively.
Each LAN hub 10,20 links to each other with LAN switch 50 by LAN interface 10a, the 20a that meets the IEEE802.3 regulation.
30a, a 40a in 2 LAN interface that each TLA30,40 all has links to each other with a port of LAN switch 50 respectively.Below, we are called the LAN-SW interface with interface 30a, 40a.Another interface 30b, 40b in 2 LAN interface that each TLA30,40 is had are the 2LAN interface, link to each other with a port on each LAN hub 10,20 respectively.Below, we are called the LAN-HUB interface to these ports 30b, 40b.
Storage has databases such as client mac address among the LAN and terminal recognition number in the NS device 51.For from the client among the LAN such as PC1~5, LAN10,20, TLA30,40 inquiry, NS device 51 has the function that database information is provided.
Fig. 2 is the block diagram of the formation of the TLA30 in the presentation graphs 1.
TLA30 has TLA control unit 30A and interface module unit 30B.
Fig. 3 is the schematic diagram that is used for the mac frame form of key diagram 1 use.
In the present embodiment, adopted MAC (Media Access Control) frame as frame format.As shown in Figure 3, mac frame is by preceding prelude (PA), SFD (Start FrameDelimiter, the start frame delimiter), hardware DA (Destination Address, end address), hardware SA (Source Address, source address), ETYPE, data portion and FCS (FCS) constitute.In the sound switching system shown in Fig. 1, voice data is carried out the data packetize and handles.In the voice data bag frame, the data division of mac frame is suitable for ATM (Asynchronous Transfer Mode, asynchronous transfer mode) AAL1 type (JT1.363) frame.ATMAAL1 type frame by the ATM head, have the drift absorption function SAPDU-H field and voice data section constitute.Following one side is with reference to figure 3, Yi Bian describe the function of each several part in the TLA30.
Fig. 4 is the operation flow sheet among Fig. 1, there is shown during sending direction and the processing, has wherein also added the interface number among Fig. 1 on the sending direction.Below, on one side with reference to Fig. 4, explanation on one side sends, converses and operation when hanging up from the voice call machine 5 that is set up in parallel with PC1 to the voice call machine 8 that is set up in parallel with PC4.Here, the MAC Address that adds respectively on each TLA30,40 LAN- SW interface 30b, 40b and LAN-SW interface 30A, the 40A, the telephone number that uses in the CTL position of the voice call machine of accommodating among each TLA30,40 by the VPI/VCI number in the ATM head among Fig. 3 or this figure is determined.Also added the MAC Address that need not other special conditions of contract on PC or workstation1~4 and the NS device 51 respectively.In addition, in the present embodiment, the use of communicating by letter (than defending oneself) the tcp/ip communication agreement on the interface beyond interface 5A, 30A, 40A and the 8A shown in Fig. 4.
The calling that at first is used to communicate by letter is controlled.
The user of voice call machine 5 inquires the information (MAC Address, the IP address that comprise PC4) of PC4 and the information (comprising the LAN-HUB interface 40B of TLA40 and the MAC Address of LAN-SW interface 40A, the number of voice call machine 8) of telephone set 8 from PC1 to NS device 51, and obtains these information (A among Fig. 4).That carry out above-mentioned inquiry use is interface 1A, 10A and the 51A that is connected with LAN switch 50 with LAN hub 10.
The PC1 that is subjected to above-mentioned information sends calling and setting request (SET-UP) information through interface 1A, 10A, 20A and 40A to PC4.Contain the MAC Address of LAN-SW interface 30A of TLA30 and the number of sound telephone set 5 in this calling and setting solicited message.
PC4 asks processing with it as calling for after receiving above-mentioned calling and setting request SET-UP information, interface 40A, 20A, 10A and the 1A of use and calling and setting request reversed in order send " breathing out " information (ALERT).When PC4 detect the user by modes such as keyboard input carry out reply the time, promptly send (CONN) information of replying to PC1.In current the transmission, use be interface 4A, 20A, 10A and the 1A identical with the information of breathing out.In addition, PC4 also sends to the number information of the MAC Address of the number information of voice call machine 8, TLA30 and voice call machine on the LAN-HUB interface 40B of TLA40 for to the selected route of the voice data on the direction of voice call machine 8 → voice call machine 5.The current transmission owing to being undertaken, so that use is interface 4A, 20A and 40B by LAN switch 50 and LAN hub 20.Above-mentioned information is given CPU36 by the LAN circuit board 37 in the TLA40.
TLA40 is after receiving above-mentioned information, on corresponding voice data, adding the MAC Address of LAN-SW interface 30A of TLA30 and the number of sound telephone set 5 with the number of voice call machine 8, then, send to LAN switch 50 through LAN-SW interface 40A with form shown in Figure 3.
On the other hand, receiving that from after the replying of PC4 PC1 delivers to the number information of MAC Address that is used for number information, TLA40 to the voice call machine 5 of the selected route of the voice data on the direction of voice call machine 5 → voice call machine 8 and voice call machine 8 the LAN-HUB interface 30B of TLA30 through interface 1A and LAN hub 10.LAN circuit board 37 in these information vias TLA30 is added on the CPU36.
TLA30 is after receiving above-mentioned information, with the corresponding voice data of the number of voice call machine 5 on add the MAC Address of LAN-SW interface 40A of TLA40 and the number of voice call machine 8, send to LAN switch 50 with the form shown in Fig. 3 then.(B among Fig. 4).
Like this, the voice data bag has just been finished through the Route Selection of interface 5A, 30A, 40A and 8A, has just entered talking state (C among Fig. 4) between voice call machine 5 and the sound telephone set 8.
When the user of voice call machine 5 wants to finish conversation, will hang up (DISC) information from PC1 and give PC4 through interface 1A, 10A, 20A and 4A.Simultaneously, send the indication that discharges connection to TLA30.The indication that TLA30 is sent adds to LAN switch 50 through interface 1A, 10A, delivers to TLA30 from this LAN switch 50 through interface 10A, 30B again.
TLA30 stops to send and the corresponding voice data bag of the number of voice call machine 8 after receiving the indication that discharges connection; And in the descending voice data of voice call machine 8, send silent mode by the HWIF circuit 34 among the TLA30.On the other hand, the PC4 that receives the information of hanging up sends the indication that discharges connection to TLA40.Later operation identical with TLA30 (D among Fig. 4).
The formation of voice data frame (data in the channel) is described below.
The interface module unit 30B that docks with the LAN hub shown in Fig. 2 connects with a large amount of voice call machines (for example, 32 circuits), and the frame format on these circuits has B1 channel and D channel.Voice data sends and receives by the D channel by B1 channel, other control informations.TL circuit 38 among the interface module unit 30B carries out frame format and time division multiplexing interface (to call " expressway " in the following text) conversion on the circuit under the effect from the synchronizing signal of HWIF circuit 34.
According to the indication of CPU36, HWIF circuit 34 can be selected to carry out with the relaying of AAL1 for descending acoustic channel or send silent mode, maintenance, ring back tone adjusting data.AAL1 circuit 33 is transformed into ATMAAL1 frame (JT-1.363) with the voice data that 30B sends here through HWIF circuit 34.At this moment to carry out the poor change time of advent of voice data bag in the non-synchronous network in the conversion.What carry out data packetize processing in AAL1 circuit unit 33 is the scope of showing out as (ⅰ) among Fig. 3.
In sum, the 1st embodiment of the present invention has following advantage.
(1) in the LAN that comprises LAN switch 50 and the LAN hub 10,20 of accommodating equipment such as PC1~4 or work station,, just can not need PBX just can carry out audio communication by adding TLA30,40.
(2) relevant with calling out control information is controlled by PC1~4, so need not in the voice call machine 5~8 to send 10 numerical keys selecting signal to use, the formation of telephone set can be very simple.
(3) the voice data bag frame that after the data packetize, sends again among the LAN, employing be that ATMAAL1 type frame data portion, shown in Fig. 3 of distributing to mac frame constitutes.Therefore, compare with the situation of distributing with (for example) UDP/IP frame, the house-keeping of voice data bag is less, and throughput can be improved.Simultaneously, the protocol processes ratio is easier to, and to handle the time of delay produce fewer because of carrying out the data packetize.In addition, the outer Route Selection of device need not router and handles, simultaneously, the processing that can be undertaken on the mac frame rank by LAN switch 50, like this, Route Selection can reduce required time of delay, and the debatable especially deterioration by the sound quality that postpones to cause can reduce in audio communication.
In addition, the voiced frame of distributing to the mac frame data portion has absorbed the change that is produced by ATMAAL1, thereby can absorb the variation that LAN switch 50 converges the time of advent of voice data bag under the state, guarantees at LAN in the dialogue of carrying out nature.
(4) owing to possess LAN-SW interface 40A independently mutually with LAN-HUB interface 40B, can not clash with the data of other PC or work station, therefore, the voice call machine accommodates quantity and can calculate at an easy rate on each device.For instance, the operation throughput of circuit is as being 6.144Mb/s when being dual 10base-T all, and an interface can guarantee to accommodate 94 circuits when each channel of voice data was 64Kb/s.
(5) by setting up the needs that the TLA30, the 40... that are housed in the LAN switch 50 can adapt to high capacity simply, the scale expansion is with respect to for the conditional PBX of the heap(ed) capacity of accommodating circuit also being easy the realization.
The 2nd embodiment
Fig. 5 is the precedence diagram as the LAN communication means of the 2nd embodiment of the present invention.
In the 1st embodiment, problem that just can not call telephone set 8 when existing the power remove as PC4.That is, in the 1st above-mentioned embodiment, the calling relevant with the communication between voice call machine control is undertaken by PC1,4, is off state as the power supply of the PC4 of incoming call side, and calling can't be carried out.The 2nd embodiment of the present invention a kind ofly carries out improved LAN communication means to the problems referred to above.
Just (B2) represented part different with Fig. 4 of expression the 1st embodiment among Fig. 5, the represented part of other (A), (B), (C) is identical with the 1st embodiment.Below a part to (B2) is described.In addition, short of special expression, below said " information " be meant the content identical with the 1st embodiment.
PC1 sends calling and setting request (SET-UP) information by after the order shown in (A) receives the information of voice call machine 8 among Fig. 5 to PC4, starts a software timer (connection waiting timer) T0 simultaneously.During the power remove of PC4, will not reply (ALERT, CONN) for the calling and setting request and return.When overtime (TO) took place T0, PC1 sent calling and setting request (HS-SET-UP) to TLA40.Comprise the number of MAC Address, the voice call machine 5 of the LAN-SW interface 40A of TLA40 in the information of sending, by necessary address (MACIP etc.) among the LAN of the number of the voice call machine 8 of incoming call and PC, deliver to LAN hub 20 through interface 1A, 10A, 20A, deliver on the LAN40 by interface 40B again.
TLA40 after receiving calling and setting request (HS-SET-UP), with its be identified as to voice call machine 8 go into to exhale, and the down channel by sound interface 8A is sent the ring signal of ringing to voice call machine 8.Simultaneously, send one back to PC1 and that is to say, inform that it is just at call telephone set 8 just at call signal (HS-ALERT).The loopback of this information is undertaken by interface 40B, LAN hub 20 and interface 20A, 10A, 1A.
On the other hand, voice call machine 8 is receiving that ring rings after the signal, and the ring of ringing is notified the user to have to call out and come.During user's off-hook of voice call machine 8, voice call machine 8 is through the ascending control channel notice TLA40 of sound interface 8A: the user is off-hook.
TLA40 detects voice call machine 8 behind the off-hook, send (HS-CONN) information of replying to PC1, and on the voice data corresponding with the number of voice call machine 8, add after the number of the MAC Address of LAN-SW interface 30A of TLA30 and sound telephone set 5, send to LAN switch 50 with the form shown in Fig. 3.
On the other hand, PC1 selects the voice data on the direction that is used to voice call machine 5 → voice call machine 8 number, the MAC Address of TLA40 and the information such as number of voice call machine 8 of the voice call machine 5 of route to send to the LAN-HUB of TLA30 interface 30B after receiving response message.
TLA30 adds the MAC Address of LAN-SW interface 40A of TLA40 and the number of sound telephone set 8 on the voice data corresponding with the number of voice call machine 5 after receiving these information, send to LAN switch 50 by the form shown in Fig. 3 then.
In sum, among superincumbent the 2nd embodiment, even arrive because callee's PC power source also can use the control channel notice of callee's voice call machine interface 8A to have to call out for off state, and can detect and reply, therefore it had both had the advantage identical with the 1st embodiment, even also can call out when the power supply of PC is turned off simultaneously, no matter when all can carry out audio communication to voice call machine 8 grades.
The 3rd embodiment
Fig. 6 is the formation block diagram as the TLA of the 3rd embodiment of the present invention.
Among the superincumbent the 1st and the 2nd embodiment,, but can not accommodate general analog subscriber phone though the voice call machine do not need can take the easy structure of 10 numerical keys.The 3rd embodiment here can be housed in general analog telephone among the LAN.
The TLA here has the TLA control unit identical with Fig. 2 and the different interface module 60 with Fig. 2.
Interface from interface module 60 to the outside is the line interface of general analog subscriber, and terminals such as the regular analog phone machine of popularizing, G3 facsimile machine all can be connected with this interface at present.
Interface module 60 has for the analog subscriber circuit in the switch necessary so-called BORSCHT function, powers up, operations such as ring, dial impulse (PB/DP) supervision.Select the reception and the transmission of the relevant information with calling out control such as signal reception result between the CPU36 among interface module 60 and the TLA control unit 30A.CPU36 with interface module 60 between receive and send, with call out the calling control sequence of controlling on the LAN that relevant information conversion becomes TCP/IP etc. (identical) with the 1st embodiment.Like this, interface module 60 and CPU36 have just constituted and have had the device that will the signal (as: off hook signal, dialing signal, bell signal and on-hook signal etc.) relevant with the calling control of analog subscriber circuit be transformed into the function of the call control protocol among the LAN.That is CPU36 has the function identical functions with PC1~4 described in the 1st and the 2nd top embodiment.
Therefore, in this 3rd embodiment of the present invention, general analog subscriber can be accommodated in the voice call machine in LAN, general purpose terminal, analog telephone, G3 fax etc. can also be accommodated.
The 4th embodiment
For the TLA30 shown in Fig. 2 or Fig. 6,40, function that will be transformed into UDP/IP (perhaps TCP/IP) packet and the function that these packets is sent and receive through LAN-HUB interface 30B, 40B have been increased among the TLA among the 4th embodiment from the voice data of a plurality of voice call machines of being accommodated.
When possessing such function, can carry out the voice data that obtains from interface module 30B or 60 is transformed into the processing of UDP/IP (perhaps TCP/IP) packet by the TLA control unit 30A among (for example) TLA30.The information relevant with calling out control sends and receives with the tcp/ip communication agreement.The UDP/IP that obtains in this processing (perhaps TCP/IP) packet is delivered to LAN-HUB interface 30B.If this LAN-HUB interface 30B goes up and is connected to router, packet is just delivered to external network by this router.
In sum, among superincumbent the 4th embodiment, owing to connected the device that can carry out Route Selection by the IP address of router etc. on the LAN-HUB interface, therefore the voice call machine 5~8 that can pass through among IP network (as the internet) and the LAN communicates.
In addition, the present invention is not limited to the above embodiments, can also make all distortion.These variation can have several below (for example).
(1) in the sound switching system in Fig. 1, NS device 51 is connected to LAN switch 50.In fact, be connected arbitrarily, also can be suitable for LAN hub 10,20.
(2) the NS device 51 among Fig. 1 can be interior finish in TLA30,40.
(3) above-mentioned each TLA30,40 and each LAN hub 10,20 all be to constitute by independent device, in fact, use with TLA30 and LAN hub 10, TLA40 and LAN hub 20 in addition finish and integrated apparatus that form constitute also and be fine.
The variation of Fig. 1 shown in Fig. 7, shown in it is integrated TLA40 and LAN hub 20 and device that constitute.So, can make distribution simplification between integrated apparatus and personal computer on the other side (PC) 4 and the voice call machine (TEL) 8.Constitute a pair of voice call machine and just can realize being connected by 8 core cables of a standard, very simplification with the connector (as RJ-45) on being located at integrated apparatus with PC.There are 6 to be used for communication in 8 cores.
In addition, this integrated apparatus can be used as simple LAN hub and uses under the state that the voiceless sound telephone set joins with it.
(4) in the superincumbent description, accommodated a plurality of TLA30,40 among the LAN, in fact,, also can obtain the effect identical with the above embodiments even a unique TLA only is set at LAN.At this moment, the LAN-SW interface of a TLA is used (need not LAN switch 50) with the ways of connecting of turning back.
(5) Fig. 8 is the block diagram that has increased the TLA of function.
Except the function described in the 4th embodiment, further increase sound compression and fax transmission-receiving function can also for TLA, make it more effectively to be used.Among Fig. 8, in the input of the LAN-HUB interface side of TLA30, be provided with the facsimile modulation/demodulation unit 70 harmony sound press unit 80 that contracts.Facsimile modulation/demodulation unit 70 has the formation of carrying out conversion between analog-and digital-, can send and receive by external networks such as router and G3 facsimile machines.
As detailed above, adopt above-mentioned the 1st invention, can in the LAN that need not equipment such as PBX, carry out audio communication.
Adopt the 2nd invention, can simplify the structure of voice call machine.Therefore, just can not clash with other personal computers or work station, the voice call machine number that each device is accommodated also can easily calculate.
Adopt the 3rd invention, can accommodate general pseudo subscriber terminal.Therefore, also just can accommodate the devices such as G3 facsimile machine that are connected with the analog subscriber interface.
Adopt the 4th and the 5th invention, just can carry out audio communication with the LAN outside.
Adopt the 6th invention, can simplify the structure of voice call machine.
Adopt the 7th invention, even when the power supply of the personal computer of the calling control of carrying out the called party or work station is turned off, also can carry out audio communication.
And comparatively speaking adopt the 8th invention,, can be adapted to high capacity simply the conditional PBX of the heap(ed) capacity of accommodating circuit.
Adopt the 9th invention, compare with the situation that adopts (for example) UDP/IP frame to distribute, the protocol processes ratio is easier to, and carries out that the data packetize is handled and time of delay of causing is also few.In addition, the outer Route Selection of device can be handled without router, but finish by the processing of LAN switch on the mac frame rank, Route Selection is less caused time of delay, and promptly the deterioration by the sound quality that postpones to cause is also few for distinctive problem in the audio communication.In addition, the change of the time of advent of voice data bag guarantees can carry out the dialogue of nature in LAN in the time of can also absorbing the LAN switch and converge.
Claims (9)
1. line concentrator that is used for the voice call machine is characterized in that:
This line concentrator is arranged among the LAN that comprises with lower device: a plurality of interfaces of accommodating are switched the LAN switch of connection and are connected with above-mentioned LAN switch by above-mentioned interface respectively and accommodate a plurality of LAN line concentrators that carry out the equipment of data communication by LAN;
This line concentrator is provided with: LAN interface that is connected with above-mentioned LAN switch and 1 group of being connected with 1 that is set up in parallel with above-mentioned device type or many voice call machines or organize voice call machine interface more; And have the voice data that to receive and to send to them from above-mentioned 1 or many voice call machines and be transformed into mac frame with regular length and the function of only the voice data relaying of above-mentioned mac frameization being given above-mentioned LAN interface one side.
2. the line concentrator that is used for the voice call machine according to claim 1, it is characterized in that being provided with different with the LAN interface that is connected of above-mentioned LAN switch, between inner CPU of device and above-mentioned LAN line concentrator, realize the 2LAN interface that sends and receive.
3. be used for the line concentrator of voice call machine according to claim 1, it is characterized in that, said apparatus has the function that the line signal of analog subscriber is transformed into the call control protocol among the TCP/IP, and has the formation of accommodating pseudo subscriber terminal.
4. be used for the line concentrator of voice call machine according to claim 1, it is characterized in that, the 2LAN interface that this line concentrator is provided with is different with the LAN interface that is connected with above-mentioned LAN switch, send and receive the CPU that installs self inside; And have function that the voice data that will receive from above-mentioned many voice call machines of accommodating is transformed into TCP/IP packet or DUP/IP packet and the function that sends and receive these TCP/IP packets or DUP/IP packet through above-mentioned 2LAN interface.
5. as being used for the line concentrator of voice call machine as described in the claim 4, it is characterized in that, be connected with on the above-mentioned 2LAN interface this 2LAN interface and the outside or above-mentioned LAN line concentrator of LAN are selected the router that is connected.
6. LAN communication means, described LAN comprises: accommodating a plurality of LAN line concentrators that carry out data communication; A plurality of voice call machine line concentrator as claimed in claim 1; And switch the LAN switch that is connected with line concentrator with above-mentioned a plurality of voice call machines at above-mentioned a plurality of LAN line concentrators with a plurality of ports; Above-mentioned LAN communication means is characterised in that:
To being housed in the tut telephone set, carry out by the personal computer or the work station that are housed in the above-mentioned LAN line concentrator with the calling control that one or more voice call machine in the line concentrator carries out.
7. LAN communication means as claimed in claim 6, it is characterized in that: when not calling out arrival notice and detection is replied from being received by the aforementioned calculation machine of call-side or work station when replying, using this control channel signals to send by the voice call machine interface of call-side.
8. a LAN communication means is provided with among the described LAN: a plurality of voice call machine line concentrators as claimed in claim 1; Accommodating a plurality of LAN line concentrators that carry out the equipment of data communication by above-mentioned LAN; And switch with above-mentioned LAN of a plurality of ports; Above-mentioned LAN communication means is characterised in that:
The Route Selection of communicating by letter relevant voice data bag with the voice call machine that carries out between above-mentioned voice call machine is with line concentrator, the handover operation of the switch of the above-mentioned LAN that is undertaken by the MAC Address in the above-mentioned mac frame of setting according to above-mentioned packet carries out.
9. a LAN communication means is provided with among the described LAN: a plurality of LAN line concentrators of accommodating the equipment that carries out data communication; A plurality of voice call machine line concentrator as claimed in claim 1; And have a plurality of ports, between above-mentioned a plurality of LAN line concentrators and above-mentioned a plurality of voice call machines are with line concentrator, switch the LAN switch of connection; Above-mentioned LAN communication means is characterised in that:
Data division in the mac frame is suitable for the frame of the function with variation time of advent that absorbs the voice data bag, and the voice data that the voice call machine is sent and received is carried out the data packetize and transmits on LAN more later on.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB971982163A CN1139222C (en) | 1997-07-24 | 1997-07-24 | Line concentrator for telephone set and communication method of lan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB971982163A CN1139222C (en) | 1997-07-24 | 1997-07-24 | Line concentrator for telephone set and communication method of lan |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 03101289 Division CN1516397B (en) | 1997-07-24 | 1997-07-24 | Concentrator for sound telephone set and local network communication method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1231788A true CN1231788A (en) | 1999-10-13 |
CN1139222C CN1139222C (en) | 2004-02-18 |
Family
ID=5179787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB971982163A Expired - Lifetime CN1139222C (en) | 1997-07-24 | 1997-07-24 | Line concentrator for telephone set and communication method of lan |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1139222C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100357790C (en) * | 2004-09-28 | 2007-12-26 | 精工爱普生株式会社 | Projector and polarization member used in projector |
WO2015042825A1 (en) * | 2013-09-26 | 2015-04-02 | 华为技术有限公司 | Method and relevant device for determining information |
-
1997
- 1997-07-24 CN CNB971982163A patent/CN1139222C/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100357790C (en) * | 2004-09-28 | 2007-12-26 | 精工爱普生株式会社 | Projector and polarization member used in projector |
WO2015042825A1 (en) * | 2013-09-26 | 2015-04-02 | 华为技术有限公司 | Method and relevant device for determining information |
Also Published As
Publication number | Publication date |
---|---|
CN1139222C (en) | 2004-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1201536C (en) | Access network over shared medium | |
CN1126395C (en) | Method, switching means and telecommunication system for performing data communications between subscriber stations | |
US6643291B1 (en) | Multimedia information communication system | |
US8588213B2 (en) | Systems and methods for generating power in a communications system | |
CN1652561A (en) | Call processing system and method in a voice and data integrated switching system | |
CN1708127A (en) | Communication terminal and method for controlling the same | |
CN1475065A (en) | Apparatus and method for integrating phone communications and data transmission on LANs and for automatically selecting lowest-prices carrier and connection mode | |
CN1221531A (en) | Telephone doubler arrangement | |
CN1825877A (en) | Method and system for implementing a computer network/internet telephone system | |
EP1361731A3 (en) | Universal system and method for logging call related data in a home telephone network | |
CN1968327A (en) | System and method of proxy independent hunt group function in a packet based network | |
WO2007106447A2 (en) | Apparatus, method and computer program product for a cordless voice over ip phone | |
CN1514617A (en) | VOIP calling control equipment in speical miniexchanger and its method | |
JP2005303679A (en) | Ip telephone system, ip telephone device, and speech method | |
CN1264318C (en) | System and apparatus for telecommunication | |
CN1885838A (en) | VoIP gateway and its application method | |
JP3620986B2 (en) | Communication control method in composite switching network and gateway apparatus using the control method | |
CN1139222C (en) | Line concentrator for telephone set and communication method of lan | |
US7436819B2 (en) | Communication apparatus and control method thereof | |
WO2004015972A1 (en) | Sound communication system and method thereof | |
JP2934406B2 (en) | Line concentrator for voice telephone set and communication method for lan | |
US20040148405A1 (en) | Network connection device, communication system, communication method, communication program, and recording medium | |
CN1516397A (en) | Concentrator for sound telephone set and local network communication method | |
JP2003152890A (en) | Internet phone system | |
CN1426220A (en) | Wireless telephone of internet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20040218 |
|
CX01 | Expiry of patent term |