CN1328398A - IP telephone - Google Patents
IP telephone Download PDFInfo
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- CN1328398A CN1328398A CN 01123021 CN01123021A CN1328398A CN 1328398 A CN1328398 A CN 1328398A CN 01123021 CN01123021 CN 01123021 CN 01123021 A CN01123021 A CN 01123021A CN 1328398 A CN1328398 A CN 1328398A
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Abstract
An IP telephone is composed of microphone-earphone unit, the dialing, offhock and hook-up unit and dial, and features its RS232 interface processing unit, which along with the microphone-earphone unit can be connected to computer via control and audio lines. In can send different control signals to computer according particular communication protocol and the computer can process adio and video data and compress data. It can greatly reduce the talking fee.
Description
Technical field
The present invention relates to a kind of network communication device, particularly relate to a kind of combining and carry out the IP phone machine that network communication is used with the Internet.
Background technology
Continuous development along with Internet technology, the growth just at double of communication bandwidth, the bottleneck that restricts online audio frequency, video technique disappears just step by step, along with the broadband arrival in people family epoch, IP phone will replace traditional telephone service, and the prospect of online video phone will be more wide.
Domestic IP telephone service still belongs to the starting stage at present, thereby has some problems inevitably.The IP phone that has come into operation is to converse by the computer network of a series of dialing connected call company with IP phonecard on ordinary telephone set.Though it can reduce cost of the phone call, use very inconvenience.When using this IP phone, must put through local telephone network earlier, input account number and password, conversation each time all will be dialled in tens bit digital, if when meeting line be busy, pays the expense of local telephone network again.Thereby it only can satisfy the requirement of economy, and can't satisfy the requirement of practicality and convenience.In today of computer technology fast development, realize that with computer the technology of ip voice and video image has become ripe, thereby make design and produce directly that the IP phone machine of calling IP phone becomes possibility.
Summary of the invention
The present invention uses problems such as inconvenience for solving existing IP phone, directly dials as dialing plain old telephone and provide a kind of, thereby uses convenient IP phone machine.
For addressing the above problem, the invention provides a kind of IP phone machine, this machine comprises and send words and earpiece unit, dialing processing and dislodging machine unit and dial, it is characterized in that, it also is provided with a RS232 interface processing unit, this unit with send words and earpiece unit to be connected with computer with tone frequency channel wire by control line respectively, and dial processing and dislodging machine unit are connected with RS232 interface processing unit and dial respectively; This machine sends various control signals by specific communications protocol to computer, and computer is by specific software program processing audio, video communication data and data compression.
Described RS232 interface processing unit links to each other with the serial ports of computer by control line, send words and earpiece unit to link to each other with the sound card of computer by tone frequency channel wire.
Described RS232 interface processing unit with send words and earpiece unit to link to each other with IP phone adapter in being contained in computer by control line and tone frequency channel wire.
Described RS232 interface processing unit adopts the standard serial bus control chip.
Described IP phone adapter contains audio frequency filtering, amplifying unit, modulus/D/A conversion unit, data compression/decompression contract unit, RS232 level processing unit, serial ports Interrupt Process unit and Serial Port Information buffer cell, and also be provided with the IP phone machine interface that connects IP phone on the card and connect the computer interface that computer is used, its sound intermediate frequency filtering, amplifying unit are connected with IP phone machine interface with modulus/D/A conversion unit respectively; RS232 level processing unit is connected with serial ports Interrupt Process unit and IP phone machine interface; The data compression/decompression unit that contracts is connected with modulus/D/A conversion unit and interface respectively; The Serial Port Information buffer cell is connected with serial ports Interrupt Process unit and interface respectively.
Described phone adapter is plugged in the computer expansion slot.
Described communications protocol adopts the command character mode set, and by the IP phone machine character of giving an order, computer carries out corresponding operating after receiving this command character.
Computer is pressed following routine processes audio frequency, video communication data and data compression:
(1), audio collection: computer extracts the analog audio information that is sent by the IP phone machine, after analog-to-digital conversion and Filtering Processing, forwards the data compression part to;
(2), data compression: the audio-frequency information that collects is carried out data compression;
(3), network communication: the voice data of finishing after the compression is sent to long-range computer through network communication portion, and simultaneously, the voice data after remote computer also will compress is sent to this machine, carries out two-way transmission;
(4), data decompression: the voice data that the remote computer that is received by network communication portion is sent carries out decompression, is reduced into original audio-frequency information, and carries out voice reproducing;
(5), voice reproducing: the voice data that is partly sent by data decompression that will constantly receive is reduced into analog information, carries out playback by the receiver of IP phone machine;
(6), information Control: various control informations such as the off-hook that reception is sent by the IP phone machine, on-hook, dialing, ring, the operation of control whole software.
According to technique scheme as seen, the present invention efficiently solves the existing existing problem of IP phone.This device combines the language process function of computer and the operation convenience of telephone set, the IP phone machine is connected with computer, pass through certain communication protocol, handle audio frequency, video communication and data compression on the Internet by specific program of computer operation, realize speech play, send functions such as words, dialing by the IP phone machine.The invention enables the user can be as using the plain old telephone calling IP phone, thereby not only can reduce cost of the phone call greatly, and extremely easy to use.The present invention not only can be applicable to family and various office space, but also can be applicable to be provided with the computer terminal, has the place of online condition, as airport, railway station, megastore etc., thereby has broad application prospects.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is another structural representation of the present invention.
Fig. 3 is an IP phone adapter card circuit block diagram of the present invention.
Fig. 4 is the flow chart of the software that cooperates with IP phone machine of the present invention that moves in computer.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and preferred implementation.
Embodiment 1
Present embodiment has provided first kind of embodiment of the present invention, and its design philosophy is that the part of functions in the IP telephony system in the computer is realized by the IP phone machine, thereby makes IP phone and the organic combination of computer.This scheme as shown in Figure 1, IP phone machine 10 of the present invention comprises to similar substantially the sending of plain old telephone to be talked about and earpiece unit 11, dialing processing and dislodging machine unit 12 and dial 13, wherein send words and earpiece unit 11 to be analog circuit, the main voice signal amplification that rises, what sent by computer is the voice signal of a simulation, through amplifying the interesting to listen to tube of pusher sounding, the audio signal of transmitter is also sent into computer after amplifying in addition.Pluck, on-hook part is associated with ringing circuit, when being in hook state, the computer audio frequency output signal is to be connected with the buzzer of ring, in case and off-hook will link to each other with receiver, the so simple function of method realization ring.Dial 13, dialing handle and dislodging machine unit 12 is coding chips, adopt standard small keyboard coding chip.The dislodging machine information of press key message sent by user is compiled to a series of binary code, is sent to RS232 interface processing unit 14.Main points of the present invention are to be provided with a RS232 interface processing unit 14, this unit is a serial communication process chip, the serial bus control chip of employing standard (1488,1489), in order to the control information serialization that control section is sent, and formation RS232 level, carry out serial communication (, adopting low rate 9600BPS) with computer for reducing the error rate in the communication.IP phone machine 10 and computer 20 is connected as shown in Figure 1 in this example, the IP phone machine links to each other with one eight core cable with computer, wherein two cores are transmitter tone frequency channel wire and receiver tone frequency channel wire, also having two cores is serial ports control lines, the power supply brain is used for receiving the dialing that is sent by the IP phone machine, instructions such as dislodging machine, in all the other four-cores, two cores are made ground wire, two cores are+the SV power supply, stube cable in the welding of IP phone one end in the circuit board, an end that links to each other with computer is two audio connectors and a serial ports joint, two audio connectors are connected on the microphone and the audio output interface of computer sound card 21, audio connector connects is two tone frequency channel wires and ground wire in the eight core cables, the serial ports joint is connected on the serial ports 22 of computer, the serial ports joint connects the Serial Port Line in the eight core cables, in the software that moves in computer with IP phone cooperates, employed string slogan can be set.
Adopt the serial communication mode between IP phone machine of the present invention and the computer, and undertaken by specific communications protocol, this communications protocol is used to finish the function that is sent various control signals by the IP phone machine to computer, agreement adopts the command character mode set, send a specific command character by the IP phone machine, computer is operated after receiving this command character accordingly.The particular content of this agreement is as follows:
| Command character Ascil code value | |
| 13 | Dialing ' 0 ' |
| 31 | Dialing ' 1 ' |
| 32 | Dialing ' 2 ' |
| 33 | Dialing ' 3 ' |
| 34 | Dialing ' 4 ' |
| 35 | Dialing ' 5 ' |
| 36 | Dialing ' 6 ' |
| 37 | Dialing ' 7 ' |
| 38 | Dialing ' 8 ' |
| 39 | Dialing ' 9 ' |
| 20 | Dialing ' * ' |
| 21 | Dialing ' # ' |
| 80 | Off-hook |
| 81 | On-hook |
IP phone of the present invention also need just can be moved by the special software program that is provided with in the computer, and computer is pressed following routine processes audio frequency, video communication data and data compression:
(1), audio collection: computer extracts the analog audio information that is sent by the IP phone machine, after analog-to-digital conversion and Filtering Processing, forwards the data compression part to;
(2), data compression: the audio-frequency information that collects is carried out data compression;
(3), network communication: the voice data of finishing after the compression is sent to long-range computer through network communication portion, and simultaneously, the voice data after remote computer also will compress is sent to this machine, carries out two-way transmission;
(4), data decompression: the voice data that the remote computer that is received by network communication portion is sent carries out decompression, is reduced into original audio-frequency information, and carries out voice reproducing;
(5), voice reproducing: the voice data that is partly sent by data decompression that will constantly receive is reduced into analog information, carries out playback by the receiver of IP phone machine;
(6), information Control: various control informations such as the off-hook that reception is sent by the IP phone machine, on-hook, dialing, ring, the operation of control whole software.
This software flow as shown in Figure 4, after the computer operation, the connection request whether continuous detection of its communication part has remote computer to send, after receiving connection request, on network operation interface, will show electrosemaphore with image mode, and, make the IP phone machine begin ring to IP phone machine conveying bell signal.After the user picks up a receiver, the IP phone machine forms off hook signal, this signal sends to computer with the communication serial mode, after computer is received off hook signal, to send a connection signal to remote computer by network communication portion, so both sides start audio collection and playback function simultaneously, communication process begins.Behind the end of conversation, user's on-hook, this on-hook signal interrupts and being connected of remote computer network, stops audio collection and playback function, after the while, remote computer was received this hang-up signal, also can do same operation.Process of user calling is: the user picks up a receiver, network is received off hook signal, there is not connection request this moment, therefore network changes awaiting digit state over to, wait for subscriber dialing, after subscriber dialing is finished, network will check whether the user who is called out is online according to the number that the user dialled, not online voice of user of not online then loopback, if the user is online, just obtain this user's the network address, send connection request to this user, and loopback ringback tone, wait for replying of remote computer, in case user's off-hook of calling out just begins communication process once.
This programme is used the serial ports mechanics of communication, handles by the dislodging machine signal and the dial string that produce in the IP phone machine, and by the control of serial ports realization to the IP phone machine.And the speech processes part is finished by sound card fully, and this is a kind of implementation of cheapness, can utilize existing resource to greatest extent,
Embodiment 2
Fig. 2 shows second kind of execution mode of the present invention, as different from Example 1, in computer, disposed an IP phone adapter 23, its structure as shown in Figure 3, adapter contains audio frequency filtering, amplifying unit 231, modulus/D/A conversion unit 232, data compression/decompression contract unit 233, RS232 level processing unit 234, the disconnected processing unit 235 of serial ports and Serial Port Information buffer cell 236, and also be provided with the IP phone machine interface 237 that connects IP phone on the card and connect the computer interface 238 that computer is used, above-mentioned each unit all adopts the mature technology in this area.Its sound intermediate frequency filtering, amplifying unit are connected with IP phone machine interface with modulus/D/A conversion unit respectively; RS232 level processing unit is connected with serial ports Interrupt Process unit and IP phone machine interface; The data compression/decompression unit that contracts is connected with modulus/D/A conversion unit and interface respectively; The Serial Port Information buffer cell is connected with serial ports Interrupt Process unit and interface respectively.In this scheme, its concrete circuit connects as shown in Figure 2, IP phone 10 adopts special-purpose stube cable to be connected with IP phone adapter 23 with being connected of computer 20, and private cable is eight core cables, adopts nine core joints to connect, wherein two cores are tone frequency channel wire, two is control line, two power supplys, two ground wires, control circuit still adopts the serial communication mode, has contained the serial communication circuit in the IP phone adapter.
This IP phone adapter inserts in the computer expansion slot, is connected with the IP phone machine with special-purpose stube cable, realizes the transmission of control informations such as voice, video information and off-hook.The audio frequency filtering of adapter, amplifying unit, the data compression/decompression unit that contracts contains DSP compress speech function and signal amplifying function, and contains the voice buffering memory block, in order to guarantee under the Internet situation smooth playing of voice.The IP phone adapter is provided with special Windows driver, cooperates DSP and voice buffering district to realize the IP phone function.
This scheme is specialized more, and it can realize compress speech by the speech processes and the signal processing of adapter, improves quality of voice transmission.
Claims (8)
1, a kind of IP phone machine, comprise and send words and earpiece unit (11), dialing processing and dislodging machine unit (12) and dial (13), it is characterized in that, it also is provided with a RS232 interface processing unit (14), this unit with send words and earpiece unit (11) to be connected with computer (20) with tone frequency channel wire by control line respectively, and dial processing and dislodging machine unit (12) are connected with RS232 interface processing unit and dial respectively; This machine sends various control signals by specific communications protocol to computer, and computer is by specific software program processing audio, video communication data and data compression.
2, a kind of IP phone machine according to claim 1 is characterized in that, described RS232 interface processing unit (14) links to each other with the serial ports (22) of computer by control line, send words and earpiece unit (11) to link to each other with the sound card (21) of computer by tone frequency channel wire.
3, a kind of IP phone machine according to claim 1 is characterized in that, described RS232 interface processing unit (14) with send words and earpiece unit (11) to link to each other with IP phone adapter (23) in being contained in computer by control line and tone frequency channel wire.
According to arbitrary described a kind of IP phone machine in the claim 1 to 3, it is characterized in that 4, described RS232 interface processing unit (14) adopts the standard serial bus control chip.
5, a kind of IP phone machine according to claim 3, it is characterized in that, described IP phone adapter (23) contains audio frequency filtering, amplifying unit (231), modulus/D/A conversion unit (232), the data compression/decompression unit (233) that contracts, RS232 level processing unit (234), serial ports Interrupt Process unit (235) and Serial Port Information buffer cell (236), and also be provided with the IP phone machine interface (237) that connects IP phone on the card and connect the computer interface (238) that computer is used, its sound intermediate frequency filtering, amplifying unit is connected with IP phone machine interface with modulus/D/A conversion unit respectively; RS232 level processing unit is connected with serial ports Interrupt Process unit and IP phone machine interface; The data compression/decompression unit that contracts is connected with modulus/D/A conversion unit and interface respectively; The Serial Port Information buffer cell is connected with serial ports Interrupt Process unit and interface respectively.
6, a kind of IP phone machine according to claim 5 is characterized in that, described phone adapter (23) is plugged in the computer expansion slot.
7, a kind of IP phone machine according to claim 1 is characterized in that, described communications protocol adopts the command character mode set, and by the IP phone machine character of giving an order, computer carries out corresponding operating after receiving this command character.
8, a kind of IP phone machine according to claim 1 is characterized in that, computer is pressed following routine processes audio frequency, video communication data and data compression:
(1), audio collection: computer extracts the analog audio information that is sent by the IP phone machine, after analog-to-digital conversion and Filtering Processing, forwards the data compression part to;
(2), data compression: the audio-frequency information that collects is carried out data compression;
(3), network communication: the voice data of finishing after the compression is sent to long-range computer through network communication portion, and simultaneously, the voice data after remote computer also will compress is sent to this machine, carries out two-way transmission;
(4), data decompression: the voice data that the remote computer that is received by network communication portion is sent carries out decompression, is reduced into original audio-frequency information, and carries out voice reproducing;
(5), voice reproducing: the voice data that is partly sent by data decompression that will constantly receive is reduced into analog information, carries out playback by the receiver of IP phone machine;
(6), information Control: various control informations such as the off-hook that reception is sent by the IP phone machine, on-hook, dialing, ring, the operation of control whole software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01123021 CN1328398A (en) | 2001-07-19 | 2001-07-19 | IP telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01123021 CN1328398A (en) | 2001-07-19 | 2001-07-19 | IP telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1328398A true CN1328398A (en) | 2001-12-26 |
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ID=4664981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01123021 Pending CN1328398A (en) | 2001-07-19 | 2001-07-19 | IP telephone |
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| Country | Link |
|---|---|
| CN (1) | CN1328398A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006069529A1 (en) * | 2005-01-02 | 2006-07-06 | Huawei Technologies Co., Ltd. | Method for caller reoriginating call in the prepaid card service |
| CN100399821C (en) * | 2003-09-06 | 2008-07-02 | 中兴通讯股份有限公司 | Video phone terminal and its realizing method |
-
2001
- 2001-07-19 CN CN 01123021 patent/CN1328398A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399821C (en) * | 2003-09-06 | 2008-07-02 | 中兴通讯股份有限公司 | Video phone terminal and its realizing method |
| WO2006069529A1 (en) * | 2005-01-02 | 2006-07-06 | Huawei Technologies Co., Ltd. | Method for caller reoriginating call in the prepaid card service |
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| SE01 | Entry into force of request for substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |