JPH077756A - Private line isdn system - Google Patents

Private line isdn system

Info

Publication number
JPH077756A
JPH077756A JP14467393A JP14467393A JPH077756A JP H077756 A JPH077756 A JP H077756A JP 14467393 A JP14467393 A JP 14467393A JP 14467393 A JP14467393 A JP 14467393A JP H077756 A JPH077756 A JP H077756A
Authority
JP
Japan
Prior art keywords
channel
line
isdn
private branch
channels
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
JP14467393A
Other languages
Japanese (ja)
Inventor
Kazuhito Takano
和仁 高野
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.)
Hasegawa Electric Co Ltd
Original Assignee
Hasegawa Electric Co Ltd
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 Hasegawa Electric Co Ltd filed Critical Hasegawa Electric Co Ltd
Priority to JP14467393A priority Critical patent/JPH077756A/en
Publication of JPH077756A publication Critical patent/JPH077756A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13034—A/D conversion, code compression/expansion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1322—PBX
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13292—Time division multiplexing, TDM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13367—Hierarchical multiplexing, add-drop multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13384—Inter-PBX traffic, PBX networks, e.g. corporate networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13396—Signaling in general, in-band signalling

Landscapes

  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To obtain a private line ISDN system in which line utilizing efficiency is effectively improved. CONSTITUTION:In the private line ISDN system in which time division private branch automatic exchanges 11, 21 having a connection function to an ISDN line are connected via an ISD network 31, an H0 channel is semi-fixedly set to the ISD network 31 between the private branch automatic exchanges 11, 21. One B channel in the H0 channel is used as a common line signal and a function making voice compression/expansion is provided to at least remaining one B channel and the B channel having voice compression/expansion is used in a multiplex manner as plural lines.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、ＩＳＤＮ回線との接
続機能を備える時分割構内交換装置をＩＳＤＮ網を介し
て設置する通信システムにおける専用線ＩＳＤＮ方式に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leased line ISDN system in a communication system in which a time division private branch exchange having a function of connecting to an ISDN line is installed via an ISDN network.

【０００２】[0002]

【従来の技術】従来の専用線ＩＳＤＮ方式においては、
図３に示すように、電話機１−１〜１−ｎを接続した時
分割構内交換装置の通話路スイッチ（ＴＤＳＷ）２と、
電話機３−１〜３−ｍを接続した時分割構内交換装置の
ＴＤＳＷ４とを、それぞれ一次群インターフェースユニ
ット（ＰＲＩＵ）５，６を介してＩＳＤＮ網７に接続し
て、１つのＢチャネル（６４ＫＢ／Ｓ）毎に音声通信を
行うようにしている。2. Description of the Related Art In the conventional dedicated line ISDN system,
As shown in FIG. 3, a speech path switch (TDSW) 2 of a time division private branch exchange to which telephones 1-1 to 1-n are connected,
The time division private branch exchange TDSW 4 to which the telephones 3-1 to 3-m are connected is connected to the ISDN network 7 via the primary group interface units (PRIU) 5 and 6, respectively, and one B channel (64 KB / 64 KB / Voice communication is performed every S).

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、図３に
示す従来の専用線ＩＳＤＮ方式にあっては、１つのＢチ
ャネル毎に音声を伝送するようにしているため、回線の
使用効率が悪いという問題がある。However, in the conventional leased-line ISDN system shown in FIG. 3, since voice is transmitted for each B channel, there is a problem of inefficient use of the line. There is.

【０００４】この発明は、このような従来の問題点に着
目してなされたもので、回線の使用効率を有効に向上で
きる専用線ＩＳＤＮ方式を提供することを目的とする。The present invention has been made in view of such conventional problems, and an object thereof is to provide a dedicated line ISDN system which can effectively improve the use efficiency of the line.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するた
め、この発明では、ＩＳＤＮ回線への接続機能を有する
時分割自動構内交換装置をＩＳＤＮ網を介して接続する
専用線ＩＳＤＮ方式において、時分割自動構内交換装置
間のＩＳＤＮ網にＨ0 チャネルを半固定的に設定し、こ
のＨ0 チャネル内の１つのＢチャネルを共通線信号とし
て使用し、残りの少なくとも１つのＢチャネルに音声圧
縮／伸長を行う機能を設けて、この音声圧縮／伸長を有
するＢチャネルを複数の回線として多重使用する。In order to achieve the above object, according to the present invention, in a dedicated line ISDN system in which a time division automatic private branch exchange having a connection function to an ISDN line is connected via an ISDN network, A H 0 channel is semi-fixedly set in the ISDN network between the automatic private branch exchanges, one B channel in this H 0 channel is used as a common line signal, and voice compression / expansion is performed on at least one remaining B channel. Is provided, and the B channel having this voice compression / decompression is multiplexed and used as a plurality of lines.

【０００６】[0006]

【作用】このように、Ｈ0 チャネルを半固定的に設定し
て、その一定時間設定されたＨ 0 チャネル内の１つのＢ
チャネルを共通線信号として使用し、残りのＢチャネル
の少なくとも１つに音声圧縮／伸長機能を設ければ、こ
のＢチャネルに複数の回線を割り当てることができるの
で、回線の使用効率を有効に向上することが可能とな
る。[Function] In this way, H0Set the channel semi-fixed
H for a certain period of time 0One B in the channel
Channel used as common line signal and remaining B channel
If a voice compression / decompression function is provided in at least one of
You can assign multiple lines to your B channel
It is possible to effectively improve the line usage efficiency.
It

【０００７】[0007]

【実施例】図１は、この発明の一実施例を示すものであ
る。この実施例では、ＩＳＤＮ回線との接続機能を備え
る時分割構内交換装置（ＰＢＸ）１１および２１をＩＳ
ＤＮ網３１を介して接続するものである。ＰＢＸ１１に
は、複数の電話機１２−１〜１２−ｎを内線回路（Ｌ
Ｃ）１３を経てＴＤＳＷ１４に接続し、このＴＤＳＷ１
４をＰＲＩＵ１５を経てＩＳＤＮ網３１に接続すると共
に、ｂ１〜ｂ２０チャネルおよびＨ0 チャネル内の６つ
のＢチャネルをＨ0 チャネル音声圧縮ユニット（ＨＣ
Ｕ）１６に接続し、これらＬＣ１３、ＴＤＳＷ１４、Ｐ
ＲＩＵ１５およびＨＣＵ１６をメインＣＰＵ（ＭＣＰ
Ｕ）１７により制御するようにする。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention. In this embodiment, the time division private branch exchanges (PBX) 11 and 21 having a connection function with an ISDN line are IS.
It is connected through the DN network 31. In the PBX 11, a plurality of telephones 12-1 to 12-n are connected to the extension circuit (L
C) Connect to TDSW14 via 13
4 as well as connect to the ISDN network 31 through the PRIU15, six B-channels b1~b20 channels and H 0 the channel H 0 channel audio compression unit (HC
U) 16 to connect LC13, TDSW14, P
RIU15 and HCU16 are the main CPU (MCP
U) It is controlled by 17.

【０００８】同様に、ＰＢＸ２１においても、複数の電
話機２２−１〜２２−ｍをＬＣ２３を経てＴＤＳＷ２４
に接続し、このＴＤＳＷ２４をＰＲＩＵ２５を経てＩＳ
ＤＮ網３１に接続すると共に、ｂ１〜ｂ２０チャネルお
よびＨ0 チャネル内の６つのＢチャネルをＨＣＵ２６に
接続し、これらＬＣ２３、ＴＤＳＷ２４、ＰＲＩＵ２５
およびＨＣＵ２６をＭＣＰＵ２７により制御するように
する。なお、ＰＢＸ１１のＨＣＵ１６のｂ１〜ｂ２０チ
ャネルは、対向するＰＢＸ２１のＨＣＵ２６のｂ１〜ｂ
２０チャネルに１対１で対応させる。Similarly, in the PBX 21 as well, a plurality of telephones 22-1 to 22-m are passed through the LC 23 and the TDSW 24.
, And connect this TDSW24 via PRIU25 to IS.
In addition to being connected to the DN network 31, the b1 to b20 channels and the six B channels in the H 0 channel are connected to the HCU 26, and these LC23, TDSW24, PRIU25 are connected.
And the HCU 26 is controlled by the MCPU 27. The b1-b20 channels of the HCU16 of the PBX11 are the b1-b20 of the HCU26 of the opposing PBX21.
One-to-one correspondence with 20 channels.

【０００９】図２は、図１に示すＰＢＸ１１のＨＣＵ１
６の構成を示すものである。ＰＢＸ１１のｂ１〜ｂ２０
チャネルは、多重／分離用のハイウェイインターフェー
ス（ＨＷＩＦ）４１に、Ｈ0 チャネル内の６つのＢチャ
ネルはＨＷＩＦ４２にそれぞれ接続し、これらＨＷＩＦ
４１および４２間に、ｂ１〜ｂ４チャネルとＢ１チャネ
ル、ｂ５〜ｂ８チャネルとＢ２チャネル、ｂ９〜ｂ１２
チャネルとＢ３チャネル、ｂ１３〜ｂ１６チャネルとＢ
４チャネルおよびｂ１７〜ｂ２０チャネルとＢ５チャネ
ルとをそれぞれ対応させて、圧縮／伸長回路４３−１〜
４３−５および多重／分離回路４４−１〜４４−５を接
続する。また、Ｂ６チャネルは、共通線信号として共通
線信号処理回路４５を経てローカルＣＰＵ（ＬＣＰＵ）
４６が接続された内部バス４７に接続し、この内部バス
４７をバスインターフェース（バスＩＦ）４８を経てシ
ステムバス４９に接続する。ＰＢＸ２１のＨＣＵ２６も
同様に構成する。FIG. 2 shows the HCU1 of the PBX 11 shown in FIG.
6 shows the configuration of No. 6. B1 to b20 of PBX11
The channels are connected to a highway interface (HWIF) 41 for multiplexing / demultiplexing, and the six B channels in the H 0 channel are connected to the HWIF 42.
41 and 42, b1 to b4 channel and B1 channel, b5 to b8 channel and B2 channel, b9 to b12
Channel and B3 channel, b13 to b16 channel and B
The four channels, the b17 to b20 channels, and the B5 channel are made to correspond to each other, and the compression / expansion circuits 43-1 to 43-1 are made.
43-5 and the multiplexing / demultiplexing circuits 44-1 to 44-5 are connected. Further, the B6 channel is a local CPU (LCPU) via the common line signal processing circuit 45 as a common line signal.
The internal bus 47 is connected to the internal bus 47, and the internal bus 47 is connected to the system bus 49 via a bus interface (bus IF) 48. The HCU 26 of the PBX 21 is similarly configured.

【００１０】以下、この実施例の動作を、ＰＢＸ１１の
電話機１２−１からＰＢＸ２１の電話機２２−１に発信
した場合を例にとって説明する。先ず、ＰＢＸ１１およ
び２１において、予めシステムで決められた時刻にＩＳ
ＤＮ網３１にＨ0 チャネルを設定する。この設定時間に
おいて、電話機１２−１からの呼情報を、ＭＣＰＵ１７
で解読して、ＨＣＵ１６のＬＣＰＵ４６および共通線信
号Ｂ６チャネルを通してＰＢＸ２１に送出する。ＰＢＸ
２１では、ＰＢＸ１１からの呼情報を、同様にＨＣＵ２
６の共通線信号Ｂ６チャネルおよびＬＣＰＵを通してＭ
ＣＰＵ２７に送出して解読し、これにより電話機２２−
１を呼び出す。The operation of this embodiment will be described below by taking as an example the case where the telephone 12-1 of the PBX 11 makes a call to the telephone 22-1 of the PBX 21. First, in the PBXs 11 and 21, the IS is set at the time predetermined by the system.
The H 0 channel is set in the DN network 31. At this set time, the call information from the telephone 12-1 is transferred to the MCPU 17
Is decoded and sent to the PBX 21 through the LCPU 46 of the HCU 16 and the common line signal B6 channel. PBX
In 21, the call information from the PBX 11 is also sent to the HCU2.
M through 6 common line signals B6 channel and LCPU
The data is sent to the CPU 27 for decoding and the telephone 22-
Call 1.

【００１１】一方、音声６４ＫＢ／Ｓの情報は、ＰＢＸ
１１のＴＤＳＷ１４により、例えばｂ１チャネルに出力
し、その情報をＨＣＵ１６においてＨＷＩＦ４１を経て
圧縮／伸長回路４３−１で１６ＫＢ／Ｓに圧縮した後、
多重／分離回路４４−１においてＢ１チャネルに多重化
して、ＨＷＩＦ４２を経てＰＢＸ２１のＨＣＵ２６に送
出する。ＨＣＵ２６では、Ｂ１チャネル内に多重化され
た１６ＫＢ／Ｓの音声情報を多重／分離回路で分離した
後、圧縮／伸長回路で６４ＫＢ／Ｓに伸長してｂ１チャ
ネルに出力し、この情報をＴＤＳＷ２４を経て電話機２
２−１に供給して通話可能とする。On the other hand, the information of voice 64 KB / S is PBX.
After being output to, for example, the b1 channel by the TDSW 14 of 11, the information is compressed to 16 KB / S by the compression / expansion circuit 43-1 via the HWIF 41 in the HCU 16,
The multiplexer / demultiplexer circuit 44-1 multiplexes the signal on the B1 channel and sends it to the HCU 26 of the PBX 21 via the HWIF 42. In the HCU 26, the 16 KB / S voice information multiplexed in the B1 channel is separated by the multiplexing / demultiplexing circuit, expanded by the compression / expansion circuit to 64 KB / S, and output to the b1 channel, and this information is sent to the TDSW 24. Through phone 2
2-1 is supplied to enable communication.

【００１２】このように、この実施例では、１つのＢチ
ャネルに対して４つのｂチャネルを割り当てて、音声情
報を圧縮多重化して送信するようにしたので、Ｈ0 チャ
ネル当たり２０回線の音声通話が可能となり、回線効率
を有効に向上することができる。As described above, in this embodiment, four b channels are assigned to one B channel, and voice information is compressed and multiplexed for transmission. Therefore, voice communication of 20 lines per H 0 channel is performed. It is possible to improve the line efficiency effectively.

【００１３】なお、上述した実施例では、Ｈ0 チャネル
の５つのＢチャネルにそれぞれ４つのｂチャネルを割り
当てたが、５つのＢチャネルの任意の１つまたは複数
に、任意の数のｂチャネルを割り当てることもできる。In the embodiment described above, four b channels are assigned to each of the five B channels of the H 0 channel, but an arbitrary number of b channels is assigned to any one or more of the five B channels. It can also be assigned.

【００１４】[0014]

【発明の効果】以上のように、この発明においては、Ｉ
ＳＤＮ網を介して対向する時分割自動構内交換装置間に
半固定的にＨ0 チャネルを設定して、音声圧縮を行うよ
うにしたので、１つのＢチャネルに複数の音声信号を多
重化して通信することができ、したがって通話回線を増
加することができ、回線の効率を有効に向上することが
できる。As described above, in the present invention, I
Since the H 0 channel is semi-fixedly set between the time-division automatic PBXs facing each other via the SDN network to perform voice compression, a plurality of voice signals are multiplexed on one B channel for communication. Therefore, the number of communication lines can be increased, and the line efficiency can be effectively improved.

【図面の簡単な説明】[Brief description of drawings]

【図１】この発明の一実施例を示す図である。FIG. 1 is a diagram showing an embodiment of the present invention.

【図２】図１に示すＨＣＵの構成を示す図である。FIG. 2 is a diagram showing a configuration of the HCU shown in FIG.

【図３】従来の技術を説明するための図である。FIG. 3 is a diagram for explaining a conventional technique.

【符号の説明】[Explanation of symbols]

１１，２１ ＰＢＸ（時分割構内交換装置） １２−１〜１２−ｎ，２２−１〜２２−ｍ 電話機 １３，２３ ＬＣ（内線回路） １４，２４ ＴＤＳＷ（通話路スイッチ） １５，２５ ＰＲＩＵ（一次群インターフェースユニッ
ト） １６，２６ ＨＣＵ（Ｈ0 チャネル音声圧縮ユニット） １７，２７ ＭＣＰＵ（メインＣＰＵ） ３１ ＩＳＤＮ網11,21 PBX (Time Division Private Branch Exchange) 12-1 to 12-n, 22-1 to 22-m Telephone 13,23 LC (Extension circuit) 14,24 TDSW (Call path switch) 15,25 PRIU (Primary) Group interface unit) 16,26 HCU (H 0 channel audio compression unit) 17,27 MCPU (main CPU) 31 ISDN network

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 ＩＳＤＮ回線への接続機能を有する時分
割自動構内交換装置をＩＳＤＮ網を介して接続する専用
線ＩＳＤＮ方式において、時分割自動構内交換装置間の
ＩＳＤＮ網にＨ0 チャネルを半固定的に設定し、このＨ
0 チャネル内の１つのＢチャネルを共通線信号として使
用し、残りの少なくとも１つのＢチャネルに音声圧縮／
伸長を行う機能を設けて、この音声圧縮／伸長を有する
Ｂチャネルを複数の回線として多重使用することを特徴
とする専用線ＩＳＤＮ方式。1. In a leased line ISDN system for connecting a time division automatic private branch exchange having a connection function to an ISDN line via an ISDN network, a H 0 channel is semi-fixed to the ISDN network between the time division automatic private branch exchanges. Set to H
One B channel out of 0 channels is used as a common line signal, and voice compression / compression is performed on at least one remaining B channel.
A dedicated line ISDN system characterized in that a B channel having this voice compression / decompression is multiply used as a plurality of lines by providing a function for expanding.
JP14467393A 1993-06-16 1993-06-16 Private line isdn system Pending JPH077756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14467393A JPH077756A (en) 1993-06-16 1993-06-16 Private line isdn system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14467393A JPH077756A (en) 1993-06-16 1993-06-16 Private line isdn system

Publications (1)

Publication Number Publication Date
JPH077756A true JPH077756A (en) 1995-01-10

Family

ID=15367586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14467393A Pending JPH077756A (en) 1993-06-16 1993-06-16 Private line isdn system

Country Status (1)

Country Link
JP (1) JPH077756A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998020653A1 (en) * 1996-11-07 1998-05-14 Northern Telecom Limited Access to telecommunications networks in a multiservice environment
WO1998016083A3 (en) * 1996-10-07 1998-06-18 Adoor V Balasubramanian PBX networks with quality of service control
WO1998045998A1 (en) * 1997-04-04 1998-10-15 Pacific Telecom Co., Ltd. Public line resale service system
EP0889670A1 (en) * 1997-07-03 1999-01-07 Alcatel Communication method between private telephone exchanges connected to an integrated services digital network
WO2000030399A3 (en) * 1998-11-02 2000-08-10 Koninkl Philips Electronics Nv Communication system using a compressed connection

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998016083A3 (en) * 1996-10-07 1998-06-18 Adoor V Balasubramanian PBX networks with quality of service control
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