CN101848265A

CN101848265A - Fixed wireless telephone capable of parallel operation

Info

Publication number: CN101848265A
Application number: CN200910020044A
Authority: CN
Inventors: 于锡汗; 牛元杰; 潘大伟; 邓忠波
Original assignee: KARER ELECTRICAL INST WEIHAI CITY
Current assignee: KARER ELECTRICAL INST WEIHAI CITY
Priority date: 2009-03-27
Filing date: 2009-03-27
Publication date: 2010-09-29

Abstract

The invention relates to a fixed wireless telephone capable of parallel operation. A shell of the wireless telephone comprises a wireless communication module, an extension control module and an extension interface module, wherein the extension control module comprises a serial port, a caller number input interface, an offhook detection interface, a ringing signal control interface and an extension dialing capture interface circuit; and the extension interface module comprises a voice channel circuit, an extension offhook detecting circuit, a ringing signal generating signal and an extension feeding interface. The side face of the shell is further provided with an extension interface, wherein the extension interface is connected with a wire extension telephone through a telephone wire. The invention not only can answer a call or make a call through the fixed wireless telephone, but also can answer a call or make a call through the wire extension telephone, removes the trouble for carrying the fixed wireless telephone from one place to another, can lead users to jointly use one communication number, and is economic and convenient. When communicating, the fixed wireless telephone and the wire extension telephone can perform offhook at the same time to be capable of realizing multiparty call, so that the fixed wireless telephone is reasonable in structure, reliable in connection and convenient in use.

Description

But the fixed wireless telephone of parallel operation

Technical field

The present invention relates to a kind of communication equipment, but the fixed wireless telephone of a kind of parallel operation specifically.Its attachable common wire telephone is realized the fixed wireless telephone of wireless communication by the telephone connected mode.

Background technology

The existing fixed radiophone abbreviates wireless commerical, Public CDMA WLL usually as, and it comprises fixed wireless telephones such as GSM, CDMA, WCDMA, TD-SCDMA.It is mainly formed: comprise that in casing wireless communication module, wireless communication module comprise RF circuit (wireless signal receiving processing circuit), liquid crystal display drive circuit, keyboard scan interface circuit, audio interface circuit, mobile phone card interface circuit, data storage circuitry; The front of casing comprises matrix liquid-crystal display screen, numerical key, function key, hands-free loudspeaker; The casing side comprises antenna, supply socket, mains switch, USB interface, handle spring line interface; There are mobile phone card draw-in groove, rechargeable battery groove etc. in the back side of casing.

Fixed wireless telephone brings more convenience than original telephone to people, has reduced the trouble of long distance wiring, has brought the enjoyment of mobile communication to people.Though conveniently moving is compared with traditional telephone, does not but have extension function, the demand user because of life or work has to fixed wireless telephone is shifted from one place to another sometimes.For example adorned a fixed wireless telephone in the parlor, the user has a rest in the bedroom, has called also must move fixed wireless telephone to bedroom or go to the parlor and go to answer; The colleague who on different desks, works in an office and for example, fixed wireless telephone is placed on colleague's the desk, and you dial or fixed wireless telephone are moved on the desk of oneself before will calling the desk that must arrive the colleague; Shift from one place to another to people's work and bring very big inconvenience.

Summary of the invention

Technical problem to be solved by this invention is: the problem that overcomes the single passage of above-mentioned existing fixed wireless telephone, shift from one place to another and use inconvenient deficiency, a kind of technical feasibility is provided, rational in infrastructure, connect reliably, have the function of wired extension set, can directly use extension set to answer or call, the trouble that fixed wireless telephone is shifted from one place to another in minimizing, but the fixed wireless telephone of parallel operation easy to use.

The technical scheme that the present invention solves the problems of the technologies described above employing is: but a kind of fixed wireless telephone of parallel operation, be provided with wireless communication module in its casing, wireless communication module comprises RF circuit (wireless signal receiving processing circuit), liquid crystal display drive circuit, keyboard scan interface circuit, audio interface circuit, mobile phone card interface circuit, data storage circuitry; The casing front comprises matrix liquid-crystal display screen, numerical key and function key, hands-free loudspeaker, the casing side comprises antenna, supply socket, mains switch, USB interface, handle spring line interface, the casing back side comprises mobile phone card draw-in groove, rechargeable battery groove, it is characterized in that: also be provided with extension set control module and extension interface module in the casing, the casing side also is provided with the extension set interface.

Extension set control module of the present invention adopts EM78806 telephone set master to use IC, mainly comprise serial ports, caller ID output interface, off-hook detection interface, bell signal control interface, extension set dialing acquisition interface circuit, finish the function controls such as dislodging machine, conversation, dialing, ring of extension telephone

Extension interface module of the present invention (SLIC) mainly comprises voice channel circuit, extension set off-hook detection circuit, ringing signal generating signal circuit, extension feeding interface, functions such as the dislodging machine of realization extension telephone, conversation, dialing, ring.

Extension set interface of the present invention, it can be RJ11 interface or various output interfaces such as inner telephone lead-in wire or binding post, the extension set interface is at the upper side of phone.

Extension set interface of the present invention can link to each other with common wire telephone by a common telephone wire.

The present invention adopts technique scheme, mainly is to adopt extension interface module (SLIC) and branch control module and wireless communication module to handle the also extension function of specific implementation fixed wireless phone.The contrast prior art, its beneficial effect is, link to each other with wired extension telephone by an ordinary telephone line, when the fixed wireless phone has the phone incoming call, fixed wireless phone and wired extension telephone be jingle bell simultaneously, and show synchronously caller ID on wired extension telephone, can be normally behind wired extension telephone off-hook and caller phone carry out voice call.Use wired extension telephone to call according to the custom of common wired landline telephone fully; When using wired extension telephone to call, the feed of wired extension telephone and dial-up prompt sound are provided by extension feeding interface, wired extension telephone dial the number by the extension set control module gather and convert to digital signal, serial ports by the extension set control module sends wireless communication module to, wireless communication module is finished call function by wireless dialing numbers mode.But the fixed wireless telephone of a parallel operation, both can answer or call by fixed wireless telephone, can answer or call by wired extension telephone again, removed the trouble that fixed wireless telephone is shifted from one place to another from, can satisfy the shared communication number of many people again, economy is convenient again.During conversation,, can realize MPTY as fixing radio telephone and wired extension telephone while off-hook; It is rational in infrastructure, connects reliable, easy to use.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is the theory diagram that the present invention realizes extension function;

Fig. 2 is an external interface schematic diagram of the present invention;

Fig. 3 is an extension set control module schematic diagram of the present invention;

Fig. 4 is an extension interface module peripheral circuit schematic diagram of the present invention.

Embodiment

But a kind of fixed wireless telephone of parallel operation is provided with wireless communication module, extension set control module and extension interface module in its casing; The casing front is provided with matrix liquid-crystal display screen, numerical key, function key, hands-free loudspeaker; The casing side is provided with antenna, supply socket, mains switch, USB interface, handle spring line interface, extension set interface; The casing back side is provided with mobile phone card draw-in groove, rechargeable battery groove.

The present invention shown in Figure 1 realizes the theory diagram of extension function, comprises wireless communication module 1, extension set control module 2, extension interface module 3.Wherein wireless communication module is formed structure and is belonged to prior art, and it comprises RF circuit (wireless signal receiving processing circuit), liquid crystal display drive circuit, keyboard scan interface circuit, audio interface circuit, mobile phone card interface circuit, data storage circuitry.Extension set control module 2 comprises serial ports 21, caller ID output interface 22, off-hook detection interface 23, bell signal control interface 24 and extension set dialing acquisition interface circuit 25.Extension interface module 3 comprises voice channel circuit 31, extension set off-hook detection circuit 32, ringing signal generating signal circuit 33, extension feeding interface 34.

Operation principle of the present invention: extension set control module 2 is by control extension interface module 3, feed is provided for wired extension telephone, and gather the data message of wired extension telephone simultaneously, become digital signal to send to wireless communication module 1 data transaction, wireless communication module 1 sends the data of wire telephone by the wireless mode of dialing, realize the wireless telecommunications of wired extension telephone, improve the ease of use and the utilance of fixed wireless telephone, effectively solved the shortcoming that fixed wireless telephone can not as telephone parallel operation use.

External interface schematic diagram of the present invention shown in Figure 2, extension set interface 6 connects outside wired extension telephone by common telephone wire, and extension set interface 6 can be RJ11 interface or various output interfaces such as inner telephone lead-in wire or binding post.Outlet 8 is used for connecting power supply adaptor, but provides the power supply input for the fixed wireless telephone of parallel operation.USB interface 7 is used for connecting PC, but to upgrading of the fixed wireless telephone of parallel operation or function setting etc.But mains switch 9 is used for controlling the switch of the fixed wireless telephone working power of parallel operation.

Extension set control module schematic diagram of the present invention shown in Figure 3, wireless communication module of the present invention communicates by the serial ports 21 of TXD2 and RXD2 two data wires and extension set control module, the extension set control module is that our company adopts the telephone set special chip of EM78806 model and a multi-functional module that more integrated other functions design voluntarily, the codec functions of DTMF/FSK signal that this functional module is integrated is reserved at least 10 common I/O mouths, incoming call detection trigger circuit, liquid crystal display screen driving interface circuit.Finish the function controls such as collection, extension set bell signal of control, the extension set dialing of dislodging machine testing to extension telephone, voice channel by the extension set control module.

The peripheral circuit schematic diagram of extension interface module of the present invention shown in Figure 4 (Subscriber Interface Module SIM), extension interface module is integrated DC/DC converter, ringing current generator, positive antipole switch, constant current feed circuit (constant current 24MA), this extension set interface module only need provide single+5V DC power supply, can realize the dislodging machine state-detection of the necessary constant-current feeding of terminal equipment, ring, terminal equipment.3 of device LINE1 (LINE3), 4 (LINE4) pin are the extension set output interface among the figure, can connect extension telephone (being ordinary telephone set) by telephone wire.SHK (extension set is plucked/the hook state output pin), three data wires of RM (Ring Mode base pin selection), FR (positive and negative control pin) and 5,6,15 pins of Fig. 3 extension set control module JK1,3 I/O mouths by extension interface module U1 carry out data communication, and the extension set control module is exported different conditions by

control

5,6,15 pins and realized functions such as the dislodging machine of extension telephone, conversation, dialing, ring.

Wired extension telephone course of work mainly comprises dislodging machine, dialing, conversation and four processes of ring, and the concrete course of work is as follows: illustrate schematic diagram by Fig. 3 and Fig. 4 and describe.

Wired extension telephone dislodging machine process: 1 of Subscriber Interface Module SIM U1,2 pin are the extension set interface among Fig. 4, the constant-current feeding (LINEA and LINEB in the diagram) of extension set is provided, when on-hook, exportable standard 48V direct voltage, for extension telephone on-hook work, when wired extension set off-hook, 1,2 pin of Subscriber Interface Module SIM U1 output 24mA constant current is for receiver off-book work.

Wired extension telephone dialing procedure: behind the extension telephone off-hook, extension interface module detects behind the off-hook can put height with the SHK pin, and the detection circuit for answering of extension set control module detects state with extension set and sends to wireless module and handle.The same push-button dialing of extension set dialing with common telephone, the telephone number of the DTMF standard that extension telephone sends carries out signal by the C5 among Fig. 3 and two coupling capacitances of C6 and is coupled to 9,10 bipods on the U2 of extension interface module JK1, the number translated digital signal that DTMF decoding circuit by extension interface module inside is dialed extension set and send to wireless communication module by serial ports 21, wireless communication module is received the telephone number of after the data wired extension set being dialed and is sent the process that wired extension set is called of finishing by wireless mode.

The communication process of wired extension telephone: after finishing above-mentioned wired extension telephone dialing, called the other side's phone will produce bell signal, wired extension set will be heard the ring-back tone prompting simultaneously, behind callee's off-hook, the voice of wired extension telephone are by LINEA among Fig. 4 and LINEB input, 10 pin by Subscriber Interface Module SIM U1 output to sending on the talking path of module, the other side's voice call signal is input to the AUDIO_IN pin of Subscriber Interface Module SIM U1 by the audio output of wireless communication module simultaneously, by RING among Fig. 4 (B) and the output of TIP (A) two pins, finish the two-way call process.

Wired extension telephone ring: but the fixed wireless telephone of parallel operation is when having detected the phone incoming call, no connection module is by the serial ports 21 of serial ports notice extension set control module, and with bell signal, caller ID sends to extension set control module JK1, extension set control module JK1 is by the RM of control Subscriber Interface Module SIM, the FR pin makes extension interface module produce ringing signal and gives the branch power ringing, simultaneously the grading control module J K1 number translated of will sending a telegram here becomes the DTMF/FSK standard signal to issue extension set by the caller ID output circuit, the ring control signal is by FR among Fig. 4 and the input of RM bipod, and the RING (B) by extension set interface circuit U1 exchanges ringing signal with TIP (A) two pins with 75V.After a ring, be input to the AUDIO_IN pin of line module U1 among Fig. 4 after the caller caller ID amplifies by the 7 pin output process of the U2 of the extension set control module among Fig. 3, after the inner amplification of line module, be transformed into and realize the demonstration of caller ID on wired extension telephone liquid crystal on TIP and the RING pin.

Claims

1. but the fixed wireless telephone of a parallel operation, be provided with wireless communication module in its casing, wireless communication module comprises RF circuit (wireless signal receiving processing circuit), liquid crystal display drive circuit, keyboard scan interface circuit, audio interface circuit, mobile phone card interface circuit, data storage circuitry; The casing front is provided with matrix liquid-crystal display screen, numerical key, function key, hands-free loudspeaker, the casing side is provided with antenna, supply socket, mains switch, USB interface, handle spring line interface, the casing back side is provided with mobile phone card draw-in groove, rechargeable battery groove, it is characterized in that: also be provided with extension set control module and extension interface module in the casing, the casing side also is provided with the extension set interface.

2. but the fixed wireless telephone of parallel operation according to claim 1, it is characterized in that: described extension set control module adopts EM78806 telephone set master to use IC, comprise serial ports, caller ID output interface, off-hook detection interface, bell signal control interface, extension set dialing acquisition interface circuit, finish dislodging machine, conversation, dialing, the ringer function control of extension telephone.

3. but the fixed wireless telephone of parallel operation according to claim 1, it is characterized in that: described extension interface module comprises voice channel circuit, extension set off-hook detection circuit, ringing signal generating signal circuit, extension feeding interface, realizes dislodging machine, conversation, dialing, the ringer function of extension telephone.

4. but parallel operation fixed wireless telephone according to claim 1 is characterized in that: described extension set interface is RJ11 interface or inner telephone lead-in wire or binding post, and the extension set interface connects wired extension telephone by telephone wire.