CN1096815C - Radio telephone device - Google Patents

Abstract

A speech within a system is conducted entirely using adaptive PCM (ADPCM) coded data, and each of mobile stations 301-303 has an ADPCM coding/decoding circuit, but cell site(CS) terminals 201, 202 have no ADPCM coding/decoding circuit. A caller side CS terminal outputs an ADPCM code of a dial tone, a ring back tone, and a busy tone to the caller side mobile stations 301-303 and a line controller 401 outputs an ADPCM code of a holding melody.

Description

Private telephony system

Technical field

The present invention relates to use the radio Phone unit of PHS (personal hand-held telephone set system), particularly relate to various tones such as in calling out control employed dialing tone and keep the form of voice signals such as tune as the interior lines terminal.

Background of invention

Fig. 5 represents existing radio Phone unit.In this device, private branch exchange (PBX) 1000 times, CS (cell-site) terminal 203,204 and the fixed telephone 800 that become the base station are configured to star, and then at CS terminal 203,204 times, (the handset PS) 304,305 of office moved in configuration.In order to carry out radio communication between the PS in wireless service areas 304,305 CS terminal 203,204 is configured in each unit of cutting apart wireless service areas, and and PBX 1000 between carry out wire communication.Carry out wire communication between fixed telephone 800 and the PBX 1000, PBX 1000 is connected on the public network 902.CS terminal 203,204 and PS 304,305 have the ADPCM coding/decoding circuit (ADPCM: adaptive differential PCM) of voice signal respectively.

Fig. 6 represents to be arranged in the PS 304 of service area of CS terminal 203 by interior lines conversation (one group of signal of dialing and the off-hook) communication sequence when the PS of the service area that is arranged in CS terminal 204 305 callings that signals.At first, when calling party PS 304 dialing and off-hook, the signal of setting (dialing information) that requires is sent to calling party CS terminal 203 from calling party PS 304, then send to PBX 1000 from CS terminal 203, then send to callee CS terminal 204, then send to callee PS 305 from callee CS terminal 204 from PBX 1000.

When callee PS 305 receive exhalation setting require signal the time, acknowledge(ment) signal and the call signal set are sent to callee CS terminal 204 from callee PS 305, then send to PBX 1000 from callee CS terminal 204, then send to calling party CS terminal 203 from PBX 1000, then send to calling party PS 304 from calling party CS terminal 203, callee PS 305 sends the internal call sound.PBX 1000 produces the interior lines ring callback sound (RBT) of analog or digital sound and sends to calling party CS terminal 203, calling party CS terminal 203 is carried out the ADPCM coding and is sent to calling party PS 304 it, and calling party PS 304 carries out the ADPCM decoding and produces audio frequency RBT it.

Then, when callee PS 305 off-hooks, the sound that stops call, simultaneously, answer signal sends to calling party CS terminal 204 from callee PS 305, then sends to PBX 1000 from callee CS terminal 204.When PBX 1000 receives answer signal, stop interior lines RBT, answer signal is sent to calling party CS terminal 203 from PBX 1000, then send to calling party PS 304 from calling party CS terminal 203.

Fig. 7 represents to be arranged in the PS 304 of service area of CS terminal 203 by interior lines conversation (dialing and a collection of of the off-hook are posted a letter) communication sequence when the PS of conversation 305 callings that signals.At first, when calling party PS 304 dialing, off-hook, the signal of setting (dialing information) that requires is sent to calling party CS terminal 203 from calling party PS 304, then send to PBX 1000 from CS terminal 203.

Because callee PS 305 is conversing, the acknowledge(ment) signal of setting is sent to calling party CS terminal 203 from PBX 1000, then send to calling party PS 304 from calling party CS terminal 203, then shutoff signal sends to calling party CS terminal 203 from PBX 1000, then sends to calling party PS 304 from calling party CS terminal 203.And PBX 1000 will produce busy tone (BT) and send to calling party CS terminal 203, and calling party CS terminal 203 is carried out it ADPCM coding and sent to calling party PS 304, and calling party PS 304 carries out the ADPCM decoding and simulated sound BT takes place it.Then, as calling party PS 304 during by off-hook, release signal is sent to calling party CS terminal 203 from calling party PS 304, then send to PBX 1000 from calling party CS terminal 203, and PBX 1000 stops BT.

Fig. 8 is illustrated in the outside line talking state and keeps, and then removes the conversation order when keeping.At first, when PS 304 and outside line terminal were in the conversation, PS 304 and CS terminal 203 had ADPCM coding/decoding circuit, and sound therebetween transmits by the ADPCM code.Sound between PBX 1000 and the public network 902 transmits with analog signal when public network 902 is PSTN, and transmit (μ-law: the coding method of μ rule) with μ-lawPCM code when public network 902 is ISDN.

When pressing the holding bottom button of PS 304 in such outside line conversation, the beachhead demand signal sends to CS terminal 203 from PS 304, then sends to PBX 1000 from CS terminal 203.When PBX 1000 detected the beachhead demand signal, generation kept the tune sound and sends to PS 304 and partner, and PS 304 and partner become reserved state.When under this state, pressing the reservation disengage button of PS304, keep to remove requiring signal to send to CS terminal 203 from PS 304, then send to PBX 1000 from CS terminal 203.Keep to remove when requiring signal when PBX 1000 detects, stop to keep the tune sound and return under the original talking state.

That is, in this system, simulated sounds such as ring callback sound, busy tone, reservation tune sound take place in PBX 1000, and the CS terminal is carried out the ADPCM coding to it, and PS carries out the ADPCM decoding to it.

Fig. 9 represents the formation of handset (PS) 10 and the machine tool (CS) 30 of general home-use cordless telephone.Handset 10 has loud speaker 11, microphone 12, amplifier 13, pcm encoder/decoder (CODEC) 14, keeps tune generating unit 15, ADPCM coder/decoder 16, TDMA handling part 17, modulator-demodulator 18, RF portion 19, antenna part 20, control part 21, memory 22, operation display part 23 etc., and machine tool 30 has exchange line I/F 31, pcm encoder/decoder 32, ADPCM coder/decoder 33, TDMA handling part 34, modulator-demodulator 35, RF portion 36, antenna part 37, control part 38, memory 39 etc.

In above-mentioned so home-use cordless telephone, be created on employed dialing tone in the mutual interior lines conversation of handset (PS), ring callback sound, busy tone and no matter be voice signal such as employed reservation tune in the internal and external line by handset (PS) 10 and machine tool (CS) 30.For example, in handset 10, by pcm encoder/decoder 14 tone and ringing tone taking place, by keeping tune generating unit 15 the tune sound takes place to keep.As keep the tune sound, send under the situation of voice signal of outside line and 10 liang of sides of handset at needs and take place in machine tool 30 sides under the situation of whole tones voice signal to be sent to outside line, simultaneously, the ADPCM coding is sent to handset 10 as data.In handset 10, this ADPCM coded data is carried out the ADPCM decoding, follow, carry out the PCM decoding and be transformed to simulated sound, talked about loud speaker 11 and export to.

Therefore, shown in Figure 5 by the star-like existing radio Phone unit that network constituted in, when the network of considering to be replaced into bus-type constitutes, become in above-mentioned bus (hereinafter referred to as LAN) and go up the mode that connects above-mentioned a plurality of CS terminals (and said fixing telephone set), on traffic carrying capacity, wish that the time that a calling occupies is shorter.

For the method for generation that analoging sound signals such as ring callback sound (RBT), dialing tone (DT), busy tone (BT), reservation tune, announcement take place, if consider to use each machine of various frequency markings to be used as above-mentioned PS, manage by system side by such existing example shown in Figure 5 as hope, send to handset 304,305,10 as required.Therefore, as described above,, wish that voice signal is taken place by above-mentioned CS terminal as if the telephone traffic of considering simultaneously on the LAN.

If the information on the LAN is digital information, above-mentioned digital information is carried out the ADPCM coding be used as data, under the situation of the exchange line that is connected on the above-mentioned radio Phone unit for the simulation public network, with the I/F of exchange line in, need conversion ADPCM coded data and analog signal, if it is online that above-mentioned exchange line is connected ISDN, need μ-lawPCM code of conversion ADPCM coded data and ISDN.Identical with home-use system shown in Figure 9, have at machine tool 30 under the situation of various tones and the analoging sound signal generation circuit that keeps tune, the ADPCM coding circuit of machine tool 30 needs.

But, if only conversation sound is considered, because above-mentioned PS has ADPCM coding/decoding circuit, if outputting encoded data on LAN then, under the situation of interior lines, in the CS terminal, just do not need coding circuit, and under the situation of outside line, on exchange line I/F, need ADPCM coding/decoding circuit or DPCM-μ-lawPCM translation circuit (it is needs in the prior art), and in above-mentioned CS terminal, do not need the ADPCM coding circuit.But, for various tones and tune and to have the ADPCM coding circuit in the CS terminal be uneconomic.

If reservation tune and announcement etc. need be delivered to the outside line side beyond the above-mentioned PS, just exist in the possibility of user side generation frequent changes.Therefore, for keeping tune and announcement etc., with regard to consider situation that the telephone traffic on the LAN is exerted an influence from being connected the content that line control unit on the LAN etc. is exported.But above-mentioned reservation tune and announcement etc. take place in line control unit, in order to export among the LAN, need the ADPCM code device, in line control unit, produce the defective on the cost.

Summary of the invention

In view of the above problems, the purpose of this invention is to provide a kind of radio Phone unit, can produce voice signals such as various tones and reservation tune with the formation of cheapness.

To achieve these goals, the present invention comes with the ADPCM code that transmission package is contained in the voice signal of calling out employed tone in the control between radio mobile station and wireless base station and between the wireless base station.

That is, according to the present invention, provide a kind of private telephony system, this private telephony system is by constituting with lower device: a plurality of portable terminal radio mobile stations (301～303) have ADPCM coding/decoding circuit; A plurality of wireless base stations (201,202) carry out radio communication with above-mentioned a plurality of portable terminal radio mobile stations; Line control unit (401) does not carry out the voice signal exchange, only calls out control; And LAN (501), be connected with the foregoing circuit control device with above-mentioned wireless base station (201,202),

Between the above-mentioned wireless base station (201,202) or the voice signal between above-mentioned wireless base station (201,202) and ISDN or the general public's circuit (901) to transmit be not via above-mentioned line control unit (401), but carry out radio communication by above-mentioned LAN (501)

Above-mentioned private telephony system is characterised in that:

The coded data form that the various tone signals that will use in to the calling of above-mentioned portable terminal radio mobile station (301～303) control use between with radio zone is stored in above-mentioned wireless base station (201 in advance, 202) in, when carrying out the calling control of above-mentioned portable terminal radio mobile station (301～303), the control signal that is used for above-mentioned calling control is in above-mentioned line control unit (401) and above-mentioned wireless base station (201,202) carry out between, from carrying out the wireless base station of direct wireless communication to the necessary above-mentioned tone signal of above-mentioned portable terminal radio mobile station transmission with above-mentioned portable terminal radio mobile station (301～303).

Brief Description Of Drawings

Embodiments of the invention are described with reference to the accompanying drawings.In these accompanying drawings:

Fig. 1 is the block diagram of an embodiment of expression radio Phone unit involved in the present invention;

Fig. 2 is that expression is used for illustrating that the schematic diagram of communication sequence of the processing of ring callback sound takes place for device at Fig. 1;

Fig. 3 is that expression is used for illustrating that the schematic diagram of communication sequence of the processing of busy tone takes place for device at Fig. 1;

Fig. 4 is that expression is used for illustrating that the schematic diagram of communication sequence of the processing of tune takes place to keep for device at Fig. 1;

Fig. 5 is the block diagram of the existing radio Phone unit of expression;

Fig. 6 is that expression is used for illustrating that the schematic diagram of communication sequence of the processing of ring callback sound takes place for device at Fig. 5;

Fig. 7 is that expression is used for illustrating that the schematic diagram of communication sequence of the processing of busy tone takes place for device at Fig. 5;

Fig. 8 is that expression is used for illustrating that the schematic diagram of communication sequence of the processing of tune takes place to keep for device at Fig. 5;

Fig. 9 is the block diagram of the home-use cordless telephone of expression.

The working of an invention mode

In Fig. 1, line control unit 401, be connected line terminal (exchange line I/F) 101 and 102 on the public network 901, be connected on the LAN 501 with bus form moving the CS terminal 201 and 202 of carrying out radio communication between (PS) 301～303 of office.Line control unit 401 has the management control of the behaviour in service of intrasystem calling control and line terminal 101,102, CS terminal 201,202, PS 301～303, and CS terminal 201,202 is stored various tones in advance and kept the ADPCM coded data that tune uses and take place when needed.For keeping tune, line control unit 401 is stored its ADPCM coded data in advance and can be taken place when needed.

The transmission of intrasystem sound is undertaken by the ADPCM coded data fully, for this reason, moves office 301～303 and has ADPCM coding/decoding circuit, and CS terminal 201,202 does not have ADPCM coding circuit/decoding circuit.Exchange line I/F 101,102 has ADPCM coding/decoding circuit under situation about being connected as public network 901 on the simulation public network, and has the ADPCM-μ-lawPCM translation circuit that is connected on the ISDN as public network 901.

Then, with reference to Fig. 2 the processing that ring callback sound (RBT) takes place is described.Fig. 2 represent from the PS 301 of the service area that is arranged in CS terminal 201 by the interior lines conversation post a letter (a collection of posting a letter) send the situation of calling to the PS 302 of the service area that is positioned at CS terminal 202.At first, the dialed number of input callee PS 302 during off-hook, sends to calling party CS terminal 201 with the signal of setting (dialing information) that requires from calling party PS 301 in calling party PS 301, then, send to line control unit 401 from calling party CS terminal 201.Line control unit 401 sends to callee PS 302 at the signal that requires that following of the situations of 302 free time of callee PS (non-talking state) sets by LAN 501 and callee CS terminal 202.

When callee PS 302 receive setting require signal the time, acknowledge(ment) signal and the exhalation signal of setting sent with above-mentioned opposite path from callee PS 302, callee PS 302 sends the internal call sound and notifies and receive conversation.When this exhalation signal arrived line control unit 401, line control unit 401 required the output of interior lines RBT to calling party CS terminal 201, when calling party CS terminal 201 receives this when requiring, the ADPCM code of interior lines RBT was sent to calling party PS 301.Decode by 301 pairs of these ADPCM codes of calling party PS and generate the interior lines RBT of analoging sound signal, exported by talking about loud speaker.

When at callee PS 302 off-hooks, ringing of interior lines ringback tone stops, and simultaneously, answer signal sends along acknowledge(ment) signal of setting and the same paths under the exhalation RST.When calling party CS terminal 201 receives this answer signal, stop the transmission of the ADPCM code of interior lines RBT, thus, the interior lines RBT among the calling party PS 301 stops.

Fig. 3 represents to give by interior lines conversation signallings (a collection of posting a letter) from the PS 301 of the service area that is arranged in CS terminal 201 situation of PS 302 callings of conversation.At first, the dialed number of input callee PS 302 during off-hook, sends to calling party CS terminal 201 with the signal of setting (dialing information) that requires from calling party PS 301 in calling party PS301, then, send to line control unit 401 from calling party CS terminal 201.

Line control unit 401 sends acknowledge(ment) signal and the shutoff signal of setting because of callee PS 302 is in the conversation along above-mentioned opposite path, requires the output of BT to calling party CS terminal 201.When calling party CS terminal 201 receives this when requiring, the ADPCM code of BT is sent to calling party PS 301, decode by 301 pairs of these ADPCM codes of calling party PS and generate the BT of voice signal, exported by talking about loud speaker.When calling party PS 301 off-hooks, release signal sends to calling party CS terminal 201 from calling party PS 301, then, sends to line control unit 401 from calling party CS terminal 201.When calling party CS terminal 201 receives release signal, stop the transmission of the ADPCM code of BT, thus, the BT among the calling party PS 301 stops.

Though omitted diagram, identical with above-mentioned RBT, BT, the ADPCM coded data of dialing tone (DT) usefulness takes place in CS terminal 201,202.For example, when the PS 301 of the service area that is arranged in CS terminal 201 carries out caller, when calling party CS terminal 201 receives off-hook information (situation of cutting apart calling) from calling party PS 301, the ADPCM code of DT is sent to calling party PS 301.This ADPCM code is decoded and generate DT by calling party PS 301, exported, urge the input of dialing information thus by talking about loud speaker.

In addition CS terminal 201,202 has also stored when outside line has signal and needed secondary dial tone and outside line ring callback sound and keep ADPCM coded datas such as tune during transmission in advance, takes place when needed.As line control unit 401, use personal computer (PC) so that carry out the conversion of file etc. easily, be stored in the interior memory of CS terminal 201,202 by its mode of piping of sound A DPCM coded data that repeats to constitute that resembles the simple mode of ringing of RBT, BT, DT.For resemble keep the tune sound and keep amount of information is bigger the announcement information and content with system different (for example by include in the other side be set to keep sound or be set in reservation announce sound) information, can be stored in line control unit 401 sides.

Processing when reservation being described below with reference to Fig. 4.At first, undertaken by line terminal 101 at the PS 301 of the service area that is arranged in CS terminal 201 under the situation of outside line conversation, establish talk path (bus) between CS terminal 201 and line terminal 101, conversation sound directly transmits with the ADPCM code without line control unit 401.Sound between PS 301 and the CS terminal 201 transmits with the ADPCM code equally.Sound between line terminal 101 and the public network 901, at public network 901 is under the situation of PSTN, by carrying out the ADPCM coding/decoding and transmit in the line terminal with analog signal, at public network 901 is under the situation of ISDN, by carrying out ADPCM-μ-lawPCM conversion and transmit with μ-lawPCM code in line terminal 101.

When pressing the holding bottom button of PS 301 in such conversation, the beachhead demand signal sends to CS terminal 201 from PS 301, then sends to line control unit 401 from CS terminal 201.When line control unit 401 detects the beachhead demand signal, just establishing talk line between PS 301 and the line control unit 401 and between line control unit 401 and the outside line, then, take place to keep the ADPCM code that the tune sound uses and send to PS 301 and outside line, become reserved state.Under this state, when the reservation disengage button of PS 301 is pressed, keep to remove requiring signal to send to CS terminal 201 from PS 301, then, send to line control unit 401 from CS terminal 201.Keep to remove when requiring signal when line control unit 401 detects, stop to keep the tune sound and revert to original talking state.

As described above, according to the present invention, owing to be contained in the voice signal of calling out employed tone in the control with ADPCM code transmission package between radio mobile station and wireless base station and between the wireless base station, thereby, the wireless base station does not just need to have ADPCM coding/decoding circuit, therefore, voice signals such as various tones and reservation tune just can take place with the formation of cheapness.

Claims (1)

1. private telephony system, this private telephony system is by constituting with lower device:

A plurality of portable terminal radio mobile stations (301～303) have ADPCM coding/decoding circuit;

A plurality of wireless base stations (201,202) carry out radio communication with above-mentioned a plurality of portable terminal radio mobile stations;

Line control unit (401) does not carry out the voice signal exchange, only calls out control; And

LAN (501) is connected with the foregoing circuit control device with above-mentioned wireless base station (201,202),

Between the above-mentioned wireless base station (201,202), it is not via above-mentioned line control unit (401) that voice signal between perhaps above-mentioned wireless base station (201,202) and ISDN or the general public's circuit (901) transmits, but carry out radio communication by above-mentioned LAN (501)

Above-mentioned private telephony system is characterised in that:

The coded data form that the various tone signals that will use in to the calling of above-mentioned portable terminal radio mobile station (301～303) control use between with radio zone is stored in the above-mentioned wireless base station (201,202) in advance, when carrying out the calling control of above-mentioned portable terminal radio mobile station (301～303), the control signal that is used for above-mentioned calling control is carried out between above-mentioned line control unit (401) and above-mentioned wireless base station (201,202)

From carrying out the wireless base station of direct wireless communication to the necessary above-mentioned tone signal of above-mentioned portable terminal radio mobile station transmission with above-mentioned portable terminal radio mobile station (301～303).

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