JPH0267097A - Subscriber line concentration system for time division telephone exchange - Google Patents

Subscriber line concentration system for time division telephone exchange

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Publication number
JPH0267097A
JPH0267097A JP21934388A JP21934388A JPH0267097A JP H0267097 A JPH0267097 A JP H0267097A JP 21934388 A JP21934388 A JP 21934388A JP 21934388 A JP21934388 A JP 21934388A JP H0267097 A JPH0267097 A JP H0267097A
Authority
JP
Japan
Prior art keywords
subscriber
voice signal
audio signal
digital audio
digital voice
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.)
Pending
Application number
JP21934388A
Other languages
Japanese (ja)
Inventor
Hisao Yagi
久雄 八木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP21934388A priority Critical patent/JPH0267097A/en
Publication of JPH0267097A publication Critical patent/JPH0267097A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To realize a subscriber line concentration function without providing a subscriber line concentration switch separated independently from a subscriber circuit by performing the dual connection of the input and output sides of the digital signals of plural subscriber circuits having functions for A/D conversion and D/A conversion, respectively. CONSTITUTION:An analog voice signal transmitted from a subscriber line 8, after being converted to a digital voice signal of eight bits, is accumulated in a buffer(BF) 5 transiently. A control circuit 7, when receiving a command from a host device from a control signal bus 12 via a control signal path 11, sends the digital voice signal accumulated in the BF 5 to an arbitrary channel on a digital voice signal bus 13 on the output side via a digital voice signal path 9 on the output side. In such a way, signals from N subscriber circuits set more than the number of channels of the digital voice signal buses 13 and 14 on the input and output sides are line-concentrated on the channels of the digital voice signal buses 13 and 14 on the input and output sides selected by the command from the outside.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は時分割電話交換機の加入者集線方式に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a subscriber concentration system for a time division telephone exchange.

〔従来の技術〕[Conventional technology]

従来、時分割電話交換機の加入者集線方式としては、加
入者回路とは分離した電子式スイッチを使用したアナロ
グ集線方式とメモリスイッチを使用したディジタル集線
方式とが知られている。Conventionally, as subscriber line concentration systems for time-division telephone exchanges, there are known analog line concentration systems using electronic switches separate from subscriber circuits and digital line concentration systems using memory switches.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来の加入者集線方式では、アナログ集線方式
、ディジタル集線方式共に、加入者回路とは分離・独立
した集線スイッチを用いる必要があるので、集線スイッ
チの制御が複雑となり、かつ集線スイッチおよびその周
辺回路の大規模化を招くという欠点がある。In the above-mentioned conventional subscriber line concentration systems, both analog and digital line concentration systems require the use of a line concentration switch that is separate and independent from the subscriber circuit, making control of the line concentration switch complicated, and This has the disadvantage of increasing the scale of the peripheral circuitry.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の時分割電話交換機の加入者集線方式は、各加入
者回路は加入者からのアナログ音声信号をＡ−Ｄ変換器
によりディジタル音声信号に変換した後これを一時蓄積
し外部からの指令による時刻に逐次ネットワーク側に送
信する手段と、前記ネットワークからのディジタル音声
信号を外部からの指令による時刻に抽出しＤ−Ａ変換器
によりアナログ音声信号に変換して前記加入者側に送信
する手段とを備え、複数の前記加入者回路のディジタル
音声信号の入側および出側をそれぞれ複式接続してなる
。In the subscriber line concentration system of the time-division telephone exchange of the present invention, each subscriber circuit converts an analog voice signal from the subscriber into a digital voice signal using an A-D converter, temporarily stores the signal, and then converts the analog voice signal from the subscriber into a digital voice signal according to an external command. means for sequentially transmitting to the network side at a time; and means for extracting a digital audio signal from the network at a time according to an external command, converting it into an analog audio signal by a D-A converter, and transmitting the analog audio signal to the subscriber side. , and the input and output sides of the digital audio signals of the plurality of subscriber circuits are connected in a duplex manner.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図は本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing one embodiment of the present invention.

第１図において、加入者回路１はＢＯＲ３ＨＴ回路（以
下ＢＯＲ３ＨＴ）２．Ａ−Ｄ変換器（以下Ａ−Ｄ）３．
Ｄ−Ａ変換器（以下Ｄ−Ａ）４゜−時蓄積回路（以下Ｂ
Ｆ）５．６およびその制御回路（以下ＣＴＬ）７を含み
構成される。また、ＢＦ５の出力は出側ディジタル音声
信号路９により複数チャネルからなる出側ディジタル音
声信号バス１３に接続され、ＢＦ６の入力は入側ディジ
タル音声信号路１０により複数チャネルからなる入側デ
ィジタル音声信号バス１４に接続される。In FIG. 1, a subscriber circuit 1 includes a BOR3HT circuit (hereinafter referred to as BOR3HT) 2. A-D converter (hereinafter referred to as A-D)3.
D-A converter (hereinafter referred to as D-A) 4°-hour storage circuit (hereinafter referred to as B
F) 5.6 and its control circuit (hereinafter referred to as CTL) 7. The output of BF5 is connected to an output digital audio signal bus 13 consisting of a plurality of channels via an output digital audio signal path 9, and the input of BF6 is connected to an input digital audio signal bus 13 consisting of a plurality of channels via an input digital audio signal path 10. Connected to bus 14.

続いて本実施例の動作について説明する。Next, the operation of this embodiment will be explained.

加入者線８から伝達されるアナログ音声信号はＢＯＲＳ
ＨＴ２を介してＡ−Ｄ３により８ビツトデイジモ えられる。ＣＴＬ７は図示していない上位装置からの指
令を制御信号バス１２から制御信号路１１を介して受信
すると、ＢＦ５に蓄積されたディジタル音声信号を出側
ディジタル音声信号路９を介して出側ディジタル音声信
号バス１３上の任意チャネルに送出する。また、ＣＴＬ
７は同様の指令により入側ディジタル音声信号バス１４
上の任意チャネルを入側ディジタル音声信号路１０を介
して抽出してＢＦ６に一時蓄える。ＢＦ６のディジタル
音声信号は逐次Ｄ−Ａ４によりアナログ音声信号に変換
され、ＢＯＲＳＨＴ２を介して加入者線８に伝達される
。The analog voice signal transmitted from subscriber line 8 is BORS
An 8-bit digital signal is obtained by A-D3 via HT2. When the CTL 7 receives a command from a host device (not shown) from the control signal bus 12 via the control signal path 11, the CTL 7 converts the digital audio signal stored in the BF 5 into an output digital audio signal via the output digital audio signal path 9. It is sent to an arbitrary channel on the signal bus 13. Also, CTL
7 is the incoming digital audio signal bus 14 according to a similar command.
The above arbitrary channel is extracted via the incoming digital audio signal path 10 and temporarily stored in the BF6. The digital voice signal of BF6 is sequentially converted into an analog voice signal by DA4 and transmitted to subscriber line 8 via BORSHT2.

ここで、出側、入側ディジタル音声信号バス１３．１４
はそれぞれ複数の加入者回路１〜Ｎの出側、入側ディジ
タル音声信号路９，１０と複式接続されている。出側、
入側ディジタル音声信号バス１３．１４のチャネル数よ
り多く設定されたＮ個の加入者回路からの信号は、外部
からの指令によって選択される出側、入側ディジタル音
声信号バス１３．１４上のチャネルに集線されることに
なる。Here, the output side and input side digital audio signal bus 13.14
are connected to output and input digital audio signal paths 9 and 10 of a plurality of subscriber circuits 1 to N, respectively. Out side,
Signals from N subscriber circuits set to be larger than the number of channels on the incoming digital audio signal bus 13.14 are sent to the outgoing and incoming digital audio signal buses 13.14, which are selected by an external command. The lines will be concentrated in the channel.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、それぞれＡ−Ｄ変換、Ｄ
−Ａ変換機能を有する複数の加入者回路のディジタル音
声信号の入側同士および出側同士をそれぞれ複式接続す
ることにより、加入者回路と分離・独立した加入者集線
スイッチを設けることなく加入者集線機能を実現できる
ので、加入者集線機能および周辺回路を小型化できる効
果がある。As explained above, the present invention provides A-D conversion, D conversion,
- By connecting the incoming and outgoing sides of digital audio signals of multiple subscriber circuits with A conversion function in multiple ways, subscriber line concentration is possible without installing a separate or independent subscriber line concentration switch from the subscriber circuits. Since the functions can be realized, there is an effect that the subscriber line concentration function and peripheral circuits can be miniaturized.

Ｄ）、４・・・Ｄ−Ａ変換器（Ｄ−Ａ）、５．６・・・
−時蓄積回路（ＢＦ）、７・・・制御回路（ＣＴＬ）、
８・・・加入者線、９・・・出側ディジタル音声信号路
、１０・・・入側ディジタル音声信号路、１１・・・制
御信号路、１２・・・制御信号バス、１３・・・出側デ
ィジタル音声信号バス、１４・・・入側ディジタル音声
信号バス。D), 4...DA converter (DA), 5.6...
- Time accumulation circuit (BF), 7... control circuit (CTL),
8... Subscriber line, 9... Outgoing digital audio signal path, 10... Incoming digital audio signal path, 11... Control signal path, 12... Control signal bus, 13... Outgoing digital audio signal bus, 14... Incoming digital audio signal bus.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示すブロック図である。 FIG. 1 is a block diagram showing one embodiment of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 各加入者回路は加入者からのアナログ音声信号をＡ−Ｄ
変換器によりディジタル音声信号に変換した後これを一
時蓄積し外部からの指令による時刻に逐次ネットワーク
側に送信する手段と、前記ネットワークからのディジタ
ル音声信号を外部からの指令による時刻に抽出しＤ−Ａ
変換器によりアナログ音声信号に変換して前記加入者側
に送信する手段とを備え、複数の前記加入者回路のディ
ジタル音声信号の入側および出側をそれぞれ複式接続し
てなることを特徴とする時分割電話交換機の加入者集線
方式。Each subscriber circuit receives analog voice signals from the subscriber from A to D.
A means for converting the digital audio signal into a digital audio signal by a converter, temporarily storing it, and sequentially transmitting it to the network side at a time specified by an external command; and a means for extracting the digital audio signal from the network at a time specified by an external command; A
and means for converting the digital audio signal into an analog audio signal using a converter and transmitting it to the subscriber side, and is characterized in that the input side and output side of the digital audio signal of the plurality of subscriber circuits are connected in multiple ways, respectively. A subscriber concentration system for time-division telephone exchanges.
JP21934388A 1988-08-31 1988-08-31 Subscriber line concentration system for time division telephone exchange Pending JPH0267097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21934388A JPH0267097A (en) 1988-08-31 1988-08-31 Subscriber line concentration system for time division telephone exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21934388A JPH0267097A (en) 1988-08-31 1988-08-31 Subscriber line concentration system for time division telephone exchange

Publications (1)

Publication Number Publication Date
JPH0267097A true JPH0267097A (en) 1990-03-07

Family

ID=16733966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21934388A Pending JPH0267097A (en) 1988-08-31 1988-08-31 Subscriber line concentration system for time division telephone exchange

Country Status (1)

Country Link
JP (1) JPH0267097A (en)

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