JP2980072B2 - Subscriber circuit with broadband communication function - Google Patents
Subscriber circuit with broadband communication functionInfo
- Publication number
- JP2980072B2 JP2980072B2 JP9227622A JP22762297A JP2980072B2 JP 2980072 B2 JP2980072 B2 JP 2980072B2 JP 9227622 A JP9227622 A JP 9227622A JP 22762297 A JP22762297 A JP 22762297A JP 2980072 B2 JP2980072 B2 JP 2980072B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- wideband
- circuit
- encoder
- wire
- 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.)
- Expired - Fee Related
Links
Landscapes
- Interface Circuits In Exchanges (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、加入者回路に関
し、特に広帯域通信を行う符号器と復号器を備えた加入
者回路に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subscriber circuit, and more particularly to a subscriber circuit having an encoder and a decoder for performing broadband communication.
【０００２】[0002]
【従来の技術】従来、加入者回路は、上り回路の入力信
号を多重化してディジタル変換しＰＣＭ（pulse code
modulation）信号として出力する符号器と、下り回線
からのＰＣＭ信号をアナログに変換する復号器を含む構
成とされている。従来の加入者回路の構成としては、例
えば特開昭６３−２２０６４１号公報に記載が参照され
る。同公報には、加入者回路の試験において下り回線か
らの試験用制御信号により試験用の複数の監視点におけ
る動作状態の信号を多重化してディジタル信号に変換し
ＰＣＭ信号として上り回線に送出させて交換機内部で解
析し、詳細な加入者回路の動作状態を把握できるように
した加入者回路が提案されている。2. Description of the Related Art Conventionally, a subscriber circuit multiplexes an input signal of an upstream circuit, converts the multiplexed signal into a digital signal, and performs a PCM (pulse code).
modulation), and a decoder for converting a PCM signal from the downlink into an analog signal. For the configuration of a conventional subscriber circuit, reference is made to, for example, Japanese Patent Application Laid-Open No. 63-22064. According to the publication, in a test of a subscriber circuit, a signal in operation at a plurality of test monitoring points is multiplexed by a test control signal from a downlink and converted into a digital signal and transmitted as a PCM signal to an uplink. There has been proposed a subscriber circuit which can be analyzed inside a switching system to grasp a detailed operation state of the subscriber circuit.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
加入者回路は下記記載の問題点を有している。However, the conventional subscriber circuit has the following problems.
【０００４】第１の問題点は、従来の加入者回路の符号
器及び復号器の信号帯域は４ＫＨｚである為、自然性に
富んだ音声通信ができない、ということである。The first problem is that the signal bandwidth of the encoder and decoder of the conventional subscriber circuit is 4 KHz, so that natural voice communication cannot be performed.
【０００５】第２の問題点は、広帯域のＡＤＰＣＭ（ad
aptive differential ＰＣＭ）信号符号器及び復号器
を用いた場合、加入者回路において通話時には、自然性
に富んだ通信が可能となるが、信号処理装置はＰＣＭ信
号を扱うため、加入者線信号や局間信号の信号処理がで
きない、という問題があった。The second problem is that a wideband ADPCM (ad
When an aptive differential PCM (Signal Encoder) and a decoder are used, communication with a high degree of naturalness is possible at the time of a call in a subscriber's circuit. There was a problem that the signal processing of the inter signal could not be performed.
【０００６】したがって本発明は、上記問題点に鑑みて
なされたものであって、その目的は、通信時のみ広帯域
符号器及び広帯域復号器に切替えを行うことにより、自
然性に富んだ音声通信が可能になり、従来のＰＣＭ信号
による加入者線信号や局間信号の信号処理を可能とする
広帯域通信機能付加入者回路を提供することにある。[0006] Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to switch to a wideband encoder and a wideband decoder only at the time of communication, thereby realizing natural voice communication. It is an object of the present invention to provide a broadband communication function-added subscriber circuit capable of processing a subscriber line signal and an inter-office signal by a conventional PCM signal.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するた
め、本発明の広帯域通信機能付加入者回路は、２線４線
変換回路の４線側出力アナログ信号を電話音声信号帯域
のＰＣＭ信号に変換する符号器と、ＰＣＭ信号を電話音
声信号帯域のアナログ信号に変換する復号器と、を含む
加入者回路において、前記２線４線変換回路の４線側出
力アナログ信号を広帯域のＡＤＰＣＭ信号に変換する広
帯域符号器と、ＡＤＰＣＭ信号を広帯域のアナログ信号
に変換する広帯域復号器と、を更に備え、通信時に、前
記広帯域符号器と前記広帯域復号器を用いて符号化及び
復号処理を行うように切替制御し、通信時以外は、前記
符号器と前記復号器に切替えＰＣＭ信号による加入者線
信号や局間信号の信号処理を行うように制御する制御回
路を備えたことを特徴とする。In order to achieve the above object, a subscriber circuit with a broadband communication function according to the present invention converts a 4-wire output analog signal of a 2-wire 4-wire conversion circuit into a PCM signal in a telephone voice signal band. In a subscriber circuit including an encoder for converting and a decoder for converting a PCM signal into an analog signal in a telephone voice signal band, a 4-wire output analog signal of the 2-wire 4-wire conversion circuit is converted into a wide-band ADPCM signal. A wideband encoder for converting, and a wideband decoder for converting the ADPCM signal to a wideband analog signal, and performing communication and decoding processing using the wideband encoder and the wideband decoder during communication. Switching control , except during communication
Subscriber line by PCM signal switched to encoder and decoder
Control circuit for controlling signal processing and signal processing between stations.
Roads .
【０００８】[0008]
【発明の実施の形態】本発明の実施の形態について以下
に説明する。本発明の広帯域通信機能付加入者回路は、
その好ましい実施の形態において、端末に加入者線を介
して通話電流を供給する給電回路と、端末と給電回路の
接続及び開放を行うスイッチ回路群と２線信号と４線信
号を相互に変換する２線４線変換回路と、前記２線４線
変換回路の４線側出力アナログ信号を電話音声信号帯域
のＰＣＭ信号に変換する符号器と、前記２線４線変換回
路の４線側出力アナログ信号を広帯域のＡＤＰＣＭ信号
に変換する広帯域符号器と、ＰＣＭ信号を電話音声信号
帯域のアナログ信号に変換する復号器と、ＡＤＰＣＭ信
号を広帯域のアナログ信号に変換する広帯域復号器と、
前記符号器と前記広帯域符号器の切替えを行う符号器切
替え回路と、前記復号器と前記広帯域復号器の切替えを
行う復号器切替え回路と、前記符号器切替え回路と前記
復号器切替え回路の制御を行う制御回路を有する。Embodiments of the present invention will be described below. The broadband communication function added subscriber circuit of the present invention,
In the preferred embodiment, a power supply circuit for supplying a communication current to a terminal via a subscriber line, a switch circuit group for connecting and disconnecting the terminal and the power supply circuit, and two- and four-wire signals are mutually converted. A two-wire / four-wire conversion circuit, an encoder for converting a four-wire-side output analog signal of the two-wire / four-wire conversion circuit into a PCM signal in a telephone voice signal band, and a four-wire-side output analog of the two-wire / four-wire conversion circuit A wideband encoder for converting the signal to a wideband ADPCM signal, a decoder for converting the PCM signal to an analog signal in a telephone voice signal band, and a wideband decoder for converting the ADPCM signal to a wideband analog signal;
An encoder switching circuit for switching between the encoder and the wideband encoder, a decoder switching circuit for switching between the decoder and the wideband decoder, and control of the encoder switching circuit and the decoder switching circuit. And a control circuit for performing the control.
【０００９】本発明の実施の形態においては、符号器切
替え回路と復号器切替え回路の制御を制御回路により行
い、通信時のみ広帯域符号器と広帯域復号器に切替え、
高品質で自然性に富んだ通信が可能としたものである。In an embodiment of the present invention, control of an encoder switching circuit and a decoder switching circuit is performed by a control circuit, and switching to a wideband encoder and a wideband decoder is performed only during communication.
It enables high quality and natural communication.
【００１０】[0010]
【実施例】上記した本発明の実施の形態について更に詳
細に説明すべく、本発明の実施例について図面を参照し
て詳細に説明する。図１は、本発明の一実施例の構成を
示すブロック図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention.
【００１１】図１を参照すると、端末１に加入者線２を
介して通話電流を供給する給電回路３と、端末１と給電
回路３を接続及び開放するスイッチ群１２と、２線信号
と４線信号を相互に変換する２線４線変換回路４と、２
線４線変換回路４の４線側出力アナログ信号を電話音声
信号帯域ＰＣＭ信号に変換する符号器５と、２線４線変
換回路４の４線側出力アナログ信号を広帯域のＡＤＰＣ
Ｍ信号に変換する広帯域符号器６と、ＰＣＭ信号を電話
音声信号帯域のアナログ信号に変換する復号器７と、Ａ
ＤＰＣＭ信号を広帯域のアナログ信号に変換する広帯域
復号器８と、符号器５と広帯域符号器６の切替えを行う
符号器切替え回路９と、復号器７と広帯域復号器８の切
替えを行う復号器切替え回路１０と、符号器切替え回路
９と復号器切替え回路１０の制御を行う制御回路１１
と、を有する。Referring to FIG. 1, a power supply circuit 3 for supplying a communication current to a terminal 1 via a subscriber line 2, a switch group 12 for connecting and disconnecting the terminal 1 and the power supply circuit 3, a two-wire signal and A two-wire / four-wire conversion circuit 4 for mutually converting line signals;
An encoder 5 for converting the 4-wire output analog signal of the 4-wire conversion circuit 4 into a telephone voice signal band PCM signal, and a wideband ADPC for converting the 4-wire output analog signal of the 2-wire 4-wire conversion circuit 4
A wideband encoder 6 for converting to an M signal, a decoder 7 for converting a PCM signal to an analog signal in a telephone voice signal band,
A wideband decoder 8 for converting a DPCM signal into a wideband analog signal, an encoder switching circuit 9 for switching between the encoder 5 and the wideband encoder 6, and a decoder switching for switching between the decoder 7 and the wideband decoder 8 A circuit 10, a control circuit 11 for controlling the encoder switching circuit 9 and the decoder switching circuit 10
And
【００１２】符号器切替え回路９と復号器切替え回路１
０を制御回路１１により制御し、通信時は、広帯域符号
器６と広帯域復号器８に切替える。同様に、通信時以外
は、符号器５と復号器７に切替え、ＰＣＭ信号による、
加入者線信号や局間信号の信号処理を行う。Encoder switching circuit 9 and decoder switching circuit 1
0 is controlled by the control circuit 11 and switched to the wideband encoder 6 and the wideband decoder 8 during communication. Similarly, except for the time of communication, switching to the encoder 5 and the decoder 7 is performed,
Performs signal processing for subscriber line signals and interoffice signals.
【００１３】本発明の実施例においては、通信時のみ広
帯域符号器６及び広帯域復号器８に切替えを行うことに
より、自然性に富んだ音声通信が可能になり、通信時以
外は、ＰＣＭ信号による加入者線信号や局間信号の信号
処理を可能となる。In the embodiment of the present invention, by switching to the wideband encoder 6 and the wideband decoder 8 only at the time of communication, natural voice communication becomes possible. Signal processing of subscriber line signals and inter-office signals becomes possible.
【００１４】[0014]
【発明の効果】以上説明したように、本発明によれば下
記記載の効果を奏する。As described above, according to the present invention, the following effects can be obtained.
【００１５】本発明の第１の効果は、高品質で自然性に
富んだ通信が可能となる、ということである。その理由
は、本発明においては、通信時に広帯域符号器及び広帯
域復号器に切替るように構成したことによる。A first effect of the present invention is that high-quality and natural communication can be performed. The reason is that the present invention is configured to switch to a wideband encoder and a wideband decoder during communication.
【００１６】本発明の第２の効果は、通信時以外は、Ｐ
ＣＭ信号による加入者線信号や局間信号の信号処理が可
能となるということである。その理由は、通信時以外に
は、ＰＣＭ信号による加入者線信号や局間信号の信号処
理を行うように構成したことによる。The second effect of the present invention is that P
This means that signal processing of a subscriber line signal and an inter-office signal by the CM signal becomes possible. The reason is that the signal processing of the subscriber line signal and the inter-office signal by the PCM signal is performed except at the time of communication.
【図１】本発明の一実施例の構成を示すブロック図であ
る。FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
１ 電話機 ２ 加入者線 ３ 給電回路 ４ ２線４線変換回路 ５ 符号器 ６ 広帯域符号器 ７ 復号器 ８ 広帯域復号器 ９ 符号器切替え回路 １０ 復号器切替え回路 １１ 制御回路 １２ スイッチ回路群 DESCRIPTION OF SYMBOLS 1 Telephone 2 Subscriber line 3 Feeding circuit 4 2-wire 4-wire conversion circuit 5 Encoder 6 Broadband encoder 7 Decoder 8 Broadband decoder 9 Encoder switching circuit 10 Decoder switching circuit 11 Control circuit 12 Switch circuit group
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H04Q 3/42 - 3/42 107 H04B 14/04 ────────────────────────────────────────────────── ─── Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) H04Q 3/42-3/42 107 H04B 14/04
Claims (4)
号を電話音声信号帯域のＰＣＭ信号に変換する符号器
と、 ＰＣＭ信号を電話音声信号帯域のアナログ信号に変換す
る復号器と、を含む加入者回路において、 前記２線４線変換回路の４線側出力アナログ信号を広帯
域のＡＤＰＣＭ信号に変換する広帯域符号器と、 ＡＤＰＣＭ信号を広帯域のアナログ信号に変換する広帯
域復号器と、を更に備え、 通信時に、前記広帯域符号器と前記広帯域復号器を用い
て符号化及び復号処理を行うように切替制御し、通信時
以外は、前記符号器と前記復号器に切替えＰＣＭ信号に
よる加入者線信号や局間信号の信号処理を行うように制
御する制御回路を備えたことを特徴とする広帯域通信機
能付き加入者回路。An encoder for converting a 4-wire output analog signal of a 2-wire 4-wire conversion circuit into a PCM signal in a telephone voice signal band; a decoder for converting the PCM signal into a telephone voice signal band analog signal; A wideband encoder for converting a 4-wire output analog signal of the 2-wire 4-wire conversion circuit into a wideband ADPCM signal, and a wideband decoder for converting the ADPCM signal into a wideband analog signal. In communication, switching control is performed so as to perform encoding and decoding processing using the wideband encoder and the wideband decoder during communication.
Other than the above, the PCM signal is switched to the encoder and the decoder.
Signal processing for subscriber line signals and interoffice signals.
A subscriber circuit with a broadband communication function, comprising a control circuit for controlling the communication.
る給電回路と、 ２線信号と４線信号を相互に変換する２線４線変換回路
と、 前記２線４線変換回路の４線側出力アナログ信号を電話
音声信号帯域のＰＣＭ信号に変換する符号器と、 前記２線４線変換回路の４線側出力アナログ信号を広帯
域のＡＤＰＣＭ信号に変換する広帯域符号器と、 ＰＣＭ信号を電話音声信号帯域のアナログ信号に変換す
る復号器と、 ＡＤＰＣＭ信号を広帯域のアナログ信号に変換する広帯
域復号器と、 前記符号器と前記広帯域符号器の切替えを行う符号器切
替え回路と、 前記復号器と前記広帯域復号器の切替えを行う復号器切
替え回路と、 前記符号器切替え回路と前記復号器切替え回路の制御を
行う制御回路と、 を含むことを特徴とする広帯域通信機能付き加入者回
路。2. A power supply circuit for supplying a communication current to a terminal via a subscriber line, a two-wire / four-wire conversion circuit for mutually converting a two-wire signal and a four-wire signal, and An encoder for converting a 4-wire output analog signal into a PCM signal in a telephone voice signal band; a wideband encoder for converting the 4-wire output analog signal of the 2-wire 4-wire conversion circuit into a wideband ADPCM signal; , A decoder for converting an ADPCM signal to a wideband analog signal, an encoder switching circuit for switching between the encoder and the wideband encoder, A decoder switching circuit for switching between the decoder and the wideband decoder; and a control circuit for controlling the encoder switching circuit and the decoder switching circuit. Subscriber circuit.
復号器に切替える、ことを特徴とする請求項２記載の広
帯域通信機能付き加入者回路。3. The subscriber circuit with a wideband communication function according to claim 2 , wherein said subscriber circuit is switched to said wideband encoder and said wideband decoder only during communication.
ッチ回路群を設けたことを特徴とする、請求項１又は２
記載の広帯域通信機能付き加入者回路。Characterized in that a switch circuit group for connecting and opening of 4. terminal and the power supply circuit, according to claim 1 or 2
A subscriber circuit with a broadband communication function as described in the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9227622A JP2980072B2 (en) | 1997-08-08 | 1997-08-08 | Subscriber circuit with broadband communication function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9227622A JP2980072B2 (en) | 1997-08-08 | 1997-08-08 | Subscriber circuit with broadband communication function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1169390A JPH1169390A (en) | 1999-03-09 |
| JP2980072B2 true JP2980072B2 (en) | 1999-11-22 |
Family
ID=16863823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9227622A Expired - Fee Related JP2980072B2 (en) | 1997-08-08 | 1997-08-08 | Subscriber circuit with broadband communication function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2980072B2 (en) |
-
1997
- 1997-08-08 JP JP9227622A patent/JP2980072B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1169390A (en) | 1999-03-09 |
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