JPH07236178A - Cordless telephone system - Google Patents

Abstract

PURPOSE:To attain talking between an extension terminal such as a PHP terminal in which voice is ADPCM data and a line wire without using a specific means by converting the ADPCM voice data of the extension terminal into PCM data. CONSTITUTION:An ADPCM voice from a slave set 8 is converted into a PCM voice through a route of slave set 8 master set 7 FHWA 20 channel 6 ADPCM-BHW 22 ADPCM/PCM conversion part 3 and the converted PCM voice is sent to an extension terminal 13 through a route of conversion part 3 PCM-FHW 25 channel 6 BHWC 28 extension i/f 10 terminal 13. On the other hand, a voice from the terminal 13 is converted into an ADPCM voice through a route of terminal 13 i/f 10 FHWC 29 channel 6 PCM-BHW 24 conversion part 3 and the converted ADPCM voice is sent to the slave set 8 through a route of conversion part 3 ADPCM-FHW 23 channel 6 BHWA 21 master set 7 slave set 8. Thus talking between the slave set 8 and the terminal 13 can be attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone system capable of accommodating an extension terminal whose voice is ADPCM data of a PHP terminal or the like.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing a configuration example of a conventional general cordless telephone system.

This system uses ADPCM data and PC
ADPCM / PCM conversion unit 3 that performs mutual conversion of M data
And the call path 6 for exchanging and setting the call path
And the base units 7 and 7'of the PHP terminal accommodated in the extension,
Cordless handsets 8 and 8'which are PHP terminals; an external line interface (i / f) 9 for accommodating an external line 12 such as a public network;
An extension interface (i / f) 10 accommodating an extension terminal 13 such as a dedicated telephone or a single telephone, and a control bus 14 for controlling the entire cordless telephone system C
And a C (central control unit) 11.

Further, the signal lines 20 to 31 are highways which are passages for digitized voice, and 20 is a base unit 7.
Is a forward highway (hereinafter, referred to as FHW) A in which there is a voice in the direction from the call path 6 to 21, and 21 is a backward highway (hereinafter, referred to as BHW) in which there is a voice in the direction from the call path 6 to the base unit 7. A is A, and 22 is an ADPCM-BHW in which voice in the direction from the communication path 6 to the ADPCM input of the ADPCM / PCM conversion unit 3 exists.

Reference numeral 23 is an ADPCM / PCM conversion unit 3.
Is ADPCM-FHW in which a voice in the direction from the ADPCM output of the communication path 6 to the communication path 6 exists, and 24 is AD from the communication path 6
It is a PCM-BHW in which voice in the direction to the PCM input of the PCM / PCM conversion unit 3 exists.

Further, 25 is a PCM-FHW in which a voice in the direction from the PCM output of the ADPCM / PCM converter 3 to the speech path 6 exists, and 26 is an external line i / f from the speech path 6.
BHWB in which voice in the direction 9 exists and 27 is FH in which voice in the direction from the external line i / f 9 to the communication path 6 exists.
It is WB.

Further, 28 is an extension i / f10 from the communication path 6.
Is a BHWC in which a voice in the direction to the line exists, and 29 is an FHW in which a voice in the direction from the extension i / f9 to the communication path 6 exists.
C is C, 30 is an FHWD in which voice is present in the direction from the other base unit 7'to the communication path 6, and 31 is BHWD in which voice is present in the direction from the communication path 6 to the base unit 7 '.

In the above configuration, when a call is made between the handset 8 and the handset 8 ', the CC 11 controls the call path 6 so that the following call paths are exchange-connected. That is, the FHWA of the base unit 7
20 and BHWD31 of base unit 7 ', and F of base unit 7'
The two communication paths of the HWD 30 and the BHWA 21 of the base unit 7 are connected.

As a result, the sound from the handset 8 is transmitted to the handset 8
→ Master device 7 → FHWA 20 → Call path 6 → BHWD 31 → Master device 7 ′ → Slave device 8 ′ to the slave device 8 ′. In addition, the voice from the slave unit 8'is the slave unit 8 '→ the master unit 7' → FH.
The data is transmitted to the child device 8 through a route of WD30 → call path 6 → BHWA21 → parent device 7 → child device 8.

In this way, a call between the handset 8 and the handset 8'is realized.

[0011]

By the way, according to the standard of RCR (Radio Wave System Development Center), the voice data of the PHP terminal is compressed by ADPCM system, and 32 kbps.
Is the bit rate of. Generally, in a telephone exchange, voice data is PCM data of 64 kbps, and the bit rate of B channel in ISDN is 64.
kbps.

However, in the above-mentioned conventional example, although there is no problem in communication between PHP terminals, it is impossible because the method of voice data is different between the PHP terminal and a general extension such as a single telephone or a digital telephone, or an outside telephone. Becomes In order to solve this problem, ADPCM / PCM conversion means 3 is provided. As a result, a call between the handset 8 and the outside line 12 becomes possible as follows.

CC11 is the FHWA20 of the base unit 7 and AD
ADPCM-BHW22, A of the PCM / PCM converter 3
PCM-FHW25 of the DPCM / PCM conversion unit 3 and BHW26 of the external line i / f9, FHWB27 of the external line i / f9 and PCM-BHW24 of the ADPCM / PCM conversion unit 3, and ADPCM-FHW of the ADPCM / PCM conversion unit 3.
The call path 6 is controlled so that the above-mentioned four call paths of the BHWA 21 of the master device 7 and 23 are exchange-connected.

As a result, the ADPCM voice from the handset unit 8 is transmitted from the handset unit 8 to the base unit 7 to the FHWA 20 to the communication path 6 to the ADP.
CM-BHW22 → ADPCM / PCM is converted to PCM voice through the route of the PCM conversion unit 3, and the converted PCM voice is AD.
It is sent to the outside line 12 through a route of PCM / PCM conversion unit 3 → PCM-FHW 25 → call path 6 → BHWB 26 → external line i / f 9 → external line 12. The voice from the outside line 12 is the outside line 1
2 → External line i / f9 → FHWB27 → Call path 6 → PCM-
BHW24 → AD PCM / PCM conversion section 3 AD
The converted ADPCM voice is converted into PCM voice, and the converted ADPCM voice is A
DPCM / PCM conversion unit 3 → ADPCM-FHW23 →
It is sent to the handset 8 through the route of the communication path 6 → BHWA 21 → the base unit 7 → the handset 8. In this way, a call between the handset 8 and the outside line 12 is realized.

Similarly, a telephone call between the handset 8 and the extension terminal 13 is also transmitted via the ADPCM / PCM conversion unit 3 to the base unit 7 and the extension i /.
It is realized by connecting with f10.

However, this configuration requires ADPCM / PCM conversion means in addition to the original means for telephone exchange, which increases the amount of hardware and is uneconomical.

It is an object of the present invention to provide a cordless telephone system capable of making a call between an extension terminal whose voice is ADPCM data and a general extension, or an outside line, without requiring any special configuration means. And

[0018]

SUMMARY OF THE INVENTION The present invention provides a PHP extension
A cordless telephone system capable of accommodating terminals etc.,
It is characterized in that it has a voice storage means provided with ADPCM / PCM conversion means, and converts ADPCM voice data of a PHP terminal or the like into PCM data by the ADPCM / PCM conversion means of the voice storage means.

In the above configuration, AD of PHP terminal or the like
The PCM voice data is converted to P by the ADPCM / PCM conversion means in the voice storage means, which is a resource originally existing in the exchange.
Converted to CM voice data.

[0020]

1 is a block diagram showing the configuration of a cordless telephone system showing an embodiment of the present invention.

The voice storage unit 1 is for recording a telephone call and sending a voice response message.
It has an ADPCM / PCM conversion unit 3, a RAM 4, and a battery 5.

The sub CC 2 controls the inside of the voice storage unit 1, and the ADPCM / PCM conversion unit 3 uses the ADP.
The CM data and the PCM data are mutually converted. Further, the RAM 4 stores the compressed ADPCM data, and the battery 5 is a holding unit that backs up the data in the RAM 4.

The call path 6 is for performing a switching operation and setting a call path, and the PHP terminal is composed of the base units 7 and 7'internally accommodated and the handset units 8 and 8 '. It

The external line i / f9 accommodates an external line 12 such as a public network, and the internal line i / f10 accommodates an internal line terminal 13 such as a dedicated telephone or a single telephone.
A CC (Central Control Unit) 11 controls the entire cordless telephone system of this embodiment via a control bus 14.

Further, the signal lines 20 to 31 are highways, which are passages for digitized voice, and 20 is a base unit 7.
Is a forward highway (hereinafter, referred to as FHW) A in which there is a voice in the direction from the call path 6 to 21, and 21 is a backward highway (hereinafter, referred to as BHW) in which there is a voice in the direction from the call path 6 to the base unit 7. A is A, and 22 is an ADPCM-BHW in which voice in the direction from the communication path 6 to the ADPCM input of the ADPCM / PCM conversion unit 3 exists.

Reference numeral 23 is an ADPCM / PCM converter 3
Is ADPCM-FHW in which a voice in the direction from the ADPCM output of the communication path 6 to the communication path 6 exists, and 24 is AD from the communication path 6
It is a PCM-BHW in which voice in the direction to the PCM input of the PCM / PCM conversion unit 3 exists.

Further, 25 is a PCM-FHW in which voice in the direction from the PCM output of the ADPCM / PCM converter 3 to the speech path 6 exists, and 26 is an external line i / f from the speech path 6.
BHWB in which voice in the direction 9 exists and 27 is FH in which voice in the direction from the external line i / f 9 to the communication path 6 exists.
It is WB.

Further, 28 is an extension i / f10 from the communication path 6.
Is a BHWC in which a voice in the direction to the line exists, and 29 is an FHW in which a voice in the direction from the extension i / f9 to the communication path 6 exists.
C is C, 30 is an FHWD in which voice is present in the direction from the other base unit 7'to the communication path 6, and 31 is BHWD in which voice is present in the direction from the communication path 6 to the base unit 7 '.

In the above-mentioned configuration, when the calling terminal dials the number of the other party, the number information is transmitted to CC11 through the control bus 14, and CC11 establishes the communication path with the other party by this number information. Exchange control of the communication path 6 is performed to set.

The voice storage unit 1 normally records and plays back voice. 64 kbps PCM input from PCM input
32kpb voice data in ADPCM / PCM converter 3
It is compressed as ADPCM data of s and stored in the RAM 4. As a result, voice recording is performed.

Further, at the time of reproducing the voice, the AD is read from the RAM4.
The PCM data is read, converted into PCM data by the ADPCM / PCM conversion unit 3, and output from the PCM output. This operation is voice recording / playback mode (hereinafter referred to as recording / playback mode).
And

The voice storage unit 1 has an input and output of ADPCM data, and ADPCM input → ADPCM / P
CM converter 3 → PCM output path and PCM input →
There is a path from the ADPCM / PCM conversion unit 3 to the ADPCM output. Therefore, the ADPCM data and P
Mutual conversion of CM data is performed. This operation is ADPC
M / PCM mutual conversion mode (hereinafter referred to as mutual conversion mode).

The ADPCM / PCM conversion unit 3 uses the ADPC
ADPC of ADPCM-BHW22 input to M input
The M audio data is converted into PCM data and output from the PCM output to the PCM-FHW 25. In addition, the PCM audio data of the PCM-BHW24 input to the PCM input is AD
Convert to PCM data and ADPCM output to ADPCM
-Output to FHW23.

Next, the flow of operation will be described with reference to the flow charts of FIGS. Note that operations other than call path connection, such as outgoing and incoming calls, are not directly related to the present invention and will not be described.

1. Calls between the handset and an outside line.

FIG. 2 shows the operation during a call between the handset 8 and the outside line 12.

First, CC 11 is a sub CC of the voice storage unit 1.
For 2, specify the operation in the mutual conversion mode (S
1). In response to this, the sub CC2 is ADPCM / PCM.
The conversion unit 3 is set to the mutual conversion mode (S2). Then, the CC 11 controls the communication path 6 so that the following communication paths are exchange-connected.

That is, the FHWA 20 and ADP of the base unit 7
ADPCM-BHW22 (S of the CM / PCM conversion unit 3
3), PCM-FHW2 of ADPCM / PCM conversion unit 3
No. 5 and outside line i / f9 BHWB26 (S4), outside line i / f
9 FHW27 and PCM of ADPCM / PCM converter 3
-BHW24 (S5), ADPCM-FHW23 of the ADPCM / PCM conversion unit 3, and BHWA21 (S of the base unit 7
6), the above four communication paths.

As a result, the ADPCM voice from the slave unit 8 is transmitted from the slave unit 8 → the master unit 7 → FHWA 20 → the communication path 6 → ADP.
The CM-BHW 22 → ADPCM / PCM conversion unit 3 converts the converted PCM sound into a PCM sound, and the converted PCM sound is A
The DPCM / PCM conversion unit 3 → PCM-FHW 25 → call path 6 → BHWB 26 → external line i / f 9 → external line 12 is sent to the external line 12.

The voice from the outside line 12 is the outside line 12 →
Outside line i / f9 → FHWB27 → Call path 6 → PCM-BH
W24 → ADPCM / PCM conversion section 3 ADPC
The converted ADPCM voice is converted into M voice, and the converted ADPCM voice is AD
PCM / PCM converter 3->ADPCM-FHW23-> communication path 6->BHWA21-> base unit 7-> handset 8 in the route of handset 8
Sent to. In this way, a call between the handset 8 and the outside line 12 is realized (S7).

2. A call between the handset and the extension terminal.

FIG. 3 shows the operation during a call between the handset 8 and the extension terminal 13.

The mutual conversion mode is set according to the above 1. It is similar to the case of (S8, S9). Then, the CC 11 controls the communication path 6 so that the following communication paths are exchange-connected.

That is, the FHWA 20 and ADP of the base unit 7
ADPCM-BHW22 (S1 of the CM / PCM conversion unit 3
0), PCM-FHW2 of the ADPCM / PCM conversion unit 3
5 and extension i / f10 BHWC28 (S11), extension i
/ F10 FHWC29 and ADPCM / PCM converter 3
ADPCM-BHW24 (S12), ADPCM / P
ADPCM-FHW23 of CM converter 3 and BH of base unit 7
WA21 (S13), which is the above four communication paths.

As a result, the ADPCM voice from the slave unit 8 is transmitted from the slave unit 8 → the master unit 7 → FHWA20 → the communication path 6 → ADP.
The CM-BHW 22 → ADPCM / PCM conversion unit 3 converts the converted PCM sound into a PCM sound, and the converted PCM sound is A
The DPCM / PCM converter 3 → PCM-FHW 25 → call path 6 → BHWC 28 → extension i / f 10 → extension terminal 13 is transmitted to the extension terminal 13.

The voice from the extension terminal 13 is the extension terminal 13 → extension i / f10 → FHWC29 → call path 6 → P
The CM-BHW 24 → ADPCM / PCM converter 3 is converted to ADPCM voice through the route, and the converted ADPCM voice is ADPCM / PCM converter 3 → ADPCM-FH.
W23 → call path 6 → BHWA 21 → main unit 7 → slave unit 8 is transmitted to the slave unit 8. In this way, a call between the handset 8 and the extension terminal 13 is realized (S14).

3. Calls between handset and handset.

FIG. 4 shows the operation during a call between the handset 8 and the handset 8 '.

In this case, it is not necessary to set the mutual conversion mode. The CC 11 controls the call path 6 so that the following call paths are switched and connected.

That is, the FHWA 20 of the base unit 7, the BHWD31 (S15) of the base unit 7 ', and the FHWD3 of the base unit 7'.
0 and BHWA21 (S16) of base unit 7 are the above two communication paths.

As a result, the ADPCM voice from the slave unit 8 is transmitted from the slave unit 8 → the master unit 7 → FHWA20 → the communication path 6 → BH.
The data is sent to the child device 8 ′ through the route of WD31 → parent device 7 ′ → child device 8 ′. In addition, the voice from the slave unit 8'is, the slave unit 8 '→ the master unit 7' → FHWD30 → the communication path 6 → BHWA21 → the master unit 7
→ Sent to the slave unit 8 through the route of the slave unit 8. In this way, the call between the handset 8 and the handset 8'is realized with the ADPCM voice as it is (S17).

As described above, when talking between the handset units,
When a call is made between the cordless handset and an external line or a cordless handset and an extension of another type with the ADPCM voice as it is, the ADPCM /
The PCM conversion is performed, and the call is realized.

In the above embodiment, the voice storage unit 1 is set to the mutual conversion mode during a call, but if the default is the mutual conversion mode, it is not necessary to set it for each call. The frequency of voice recording / playback is efficient because it does not occur every call.

Although a PHP terminal has been taken as an example of the cordless extension terminal, the present invention is not limited to this.
Even in a non-PHP terminal, if the voice is ADPCM data, it can be similarly applied.

[0055]

As described above, according to the present invention,
Without providing a dedicated ADPCM / PCM conversion means,
Due to the originally existing resources, there is an effect that a call between a PHP terminal or the like and a general extension or an outside line becomes possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the above embodiment.

FIG. 3 is a flowchart showing the operation of the above embodiment.

FIG. 4 is a flowchart showing the operation of the above embodiment.

FIG. 5 is a block diagram showing a configuration example of a conventional system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Audio | voice storage part, 2 ... Sub CC, 3 ... ADPCM / PCM conversion part, 4 ... RAM, 5 ... Battery, 6 ... Communication path, 7, 7 '... Parent machine, 8, 8' ... Child machine, 9 ... External line i / f, 10 ... Extension line i / f, 11 ... CC, 12 ... External line, 13 ... External line terminal, 14 ... Control bus.

Claims (5)

[Claims] 1. A cordless telephone system capable of accommodating an extension terminal whose voice is ADPCM data, comprising: a voice storage means having ADPCM / PCM conversion means, wherein the ADPCM voice data of the extension terminal is stored in the voice storage means. A cordless telephone system characterized by converting to PCM data by ADPCM / PCM conversion means. 2. The cordless telephone system according to claim 1, wherein the extension terminal is a PHP terminal. 3. The audio data of the PHP terminal according to claim 2, wherein the audio data of the PHP terminal is ADP of 32 kbps.
A cordless telephone system which is CM data, wherein the ADPCM / PCM converting means converts the PCM data into 64 kbps. 4. The ADPCM / PCM conversion means according to claim 1, wherein the ADPCM / PCM conversion means has a voice recording / playback mode and an ADPCM / PCM mutual conversion mode as operation modes, and defaults to voice recording / playback. A cordless telephone system characterized by being in mode. 5. The ADPCM / PCM conversion means according to claim 1, wherein the ADPCM / PCM conversion means has a voice recording / playback mode and an ADPCM / PCM mutual conversion mode as operation modes, and defaults to ADPCM / PCM. A cordless telephone system characterized by a mutual conversion mode.