JPH05110669A - Emergency line connection system - Google Patents

Emergency line connection system

Info

Publication number
JPH05110669A
JPH05110669A JP26475091A JP26475091A JPH05110669A JP H05110669 A JPH05110669 A JP H05110669A JP 26475091 A JP26475091 A JP 26475091A JP 26475091 A JP26475091 A JP 26475091A JP H05110669 A JPH05110669 A JP H05110669A
Authority
JP
Japan
Prior art keywords
line
subscriber
time slot
carrier
output
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.)
Granted
Application number
JP26475091A
Other languages
Japanese (ja)
Other versions
JP2809244B2 (en
Inventor
Yoshitaka Shimada
義孝 島田
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 JP26475091A priority Critical patent/JP2809244B2/en
Publication of JPH05110669A publication Critical patent/JPH05110669A/en
Application granted granted Critical
Publication of JP2809244B2 publication Critical patent/JP2809244B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To attain the connection to an emergency line in a remote location terminal station of a subscriber carrier equipment on the occurrence of a fault of a carrier line by using a transmission time division switch so as to connect a hooked-off subscriber signal to an emergency line and replacing it with an output of a substantial reception time division switch. CONSTITUTION:A control circuit 5 connects a subscriber A hooked off to relieve an emergency line when a carrier line is faulty due to time slot replacement and the transmission reception of a subscriber signal is disabled to an exchange side. After the emergency line is called conversely, in order to connect the emergency line to the subscriber A for the talking, a transmission control address 51 is outputted to a transmission time division switch 6. A selection circuit 8 outputs an output 71 of a reception time division switch 7 to a subscriber side 81 in the normal state and an output 61 of the switch 6 is outputted to the subscriber side 81 on the occurrence of a fault. Thus, the connection to the emergency line is implemented in the remote location terminal station of the subscriber carrier equipment.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は、非常回線接続方式に関
し、特に、ディジタル加入者線搬送装置の遠隔地端局に
おいて搬送線路に障害が生じた時の非常回線接続方式に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency line connection system, and more particularly to an emergency line connection system when a failure occurs in a carrier line at a remote terminal station of a digital subscriber line carrier.

【0002】[0002]

【従来の技術】従来の非常回線接続方式は、リモートス
イッチなどで実施されているように交換機能を持つ装置
に限られている。
2. Description of the Related Art The conventional emergency line connection system is limited to a device having a switching function as implemented by a remote switch or the like.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、この従
来の非常回線接続方式では、リモートスイッチのように
交換機能を持つ装置で実現されているため、大規模(最
低数1000回線)、高価格であり、元来小規模な加入
者線搬送装置には適用できない問題点があった。
However, in this conventional emergency line connection method, since it is realized by a device having a switching function such as a remote switch, it is large-scale (at least several thousand lines) and expensive. However, there is a problem that it cannot be applied to a small-scale subscriber line carrier.

【0004】そこで、本発明の技術的課題は上記欠点に
鑑み、搬送路線に障害が発生した場合においても、非常
回線の接続を加入者線搬送装置の遠隔地端局内で行なえ
る非常回線接続方式を提供することである。
In view of the above-mentioned drawbacks, the technical problem of the present invention is to provide an emergency line connection system in which the emergency line can be connected within the remote terminal station of the subscriber line carrier even when a failure occurs in the carrier line. Is to provide.

【0005】[0005]

【課題を解決するための手段】本発明によれば、電話加
入者線をディジタル多重搬送化するディジタル加入者線
搬送装置に用いられる非常回線接続方式において、加入
者線多重化信号をタイムスロット入替し、搬送線路側に
出力する送信スイッチと、前記搬送線路側から入力され
るライン多重化信号をタイムスロット入替し、加入者線
路側に出力する受信スイッチと、ディジタル搬送線路側
に障害が起った場合のみ、前記受信スイッチの出力を、
前記送信スイッチの出力に切替る選択手段とを有するこ
とを特徴とする非常回線接続方式が得られる。
According to the present invention, in an emergency line connection system used in a digital subscriber line carrier for digitally multiplexing a telephone subscriber line, subscriber line multiplexed signals are replaced by time slots. However, a transmission switch that outputs to the carrier line side, a receive switch that replaces the line multiplexed signal input from the carrier line side with the time slot and outputs to the subscriber line side, and a failure occurs on the digital carrier line side. Only when the output of the receiving switch,
There is provided an emergency line connection system characterized in that it has a selection means for switching to the output of the transmission switch.

【0006】本発明の非常回線接続方式は、加入者線多
重化信号に含まれる加入者端末(電話)がオフフックさ
れた状態を検出する起動信号検出器と、該加入者多重化
信号と同期し、多重化されたタイムスロット番号を発生
するタイムスロット番号発生器と、該タイムスロット番
号発生器のタイムスロット番号出力を、前記起動信号検
出器の出力により順次記憶する待ち行列回路と、該待ち
行列回路に記憶されたタイムスロット番号を読み出し、
該タイムスロット番号で示される加入者信号を前記加入
者多重化信号内にあらかじめ配置された非常回線タイム
スロットに接続し、又逆に非常回線タイムスロットを前
記電話器をオフフックした加入者のタイムスロットに接
続するためのスイッチアドレスを発生する制御回路と、
該制御回路の発生するスイッチアドレスに従って加入者
線多重化信号をタイムスロット入替し、搬送線路側に出
力する送信スイッチと、前記搬送線路側から入力される
ライン多重化信号をタイムスロット入替し、加入者線側
に出力する受信スイッチと、該受信スイッチの出力を、
ディジタル搬送線路に障害が起った時にのみ前記送信ス
イッチの出力に切替える選択回路とを備えている。
The emergency line connection system of the present invention is a start signal detector for detecting a state where a subscriber terminal (telephone) included in a subscriber line multiplexed signal is off-hook, and is synchronized with the subscriber multiplexed signal. A time slot number generator for generating a multiplexed time slot number, a queue circuit for sequentially storing time slot number outputs of the time slot number generator by the output of the activation signal detector, and the queue Read the time slot number stored in the circuit,
The subscriber signal indicated by the time slot number is connected to the emergency line time slot arranged in advance in the subscriber multiplexed signal, and conversely, the emergency line time slot is the time slot of the subscriber who off-hooks the telephone set. A control circuit for generating a switch address for connecting to
According to the switch address generated by the control circuit, the subscriber line multiplexed signal is replaced by time slot, and the transmission switch for outputting to the carrier line side and the line multiplexed signal inputted from the carrier line side are replaced by time slot and joined. The receiving switch that outputs to the main line side and the output of the receiving switch,
And a selection circuit for switching to the output of the transmission switch only when a failure occurs in the digital carrier line.

【0007】[0007]

【実施例】次に本発明の実施例について図面を参照して
説明する。
Embodiments of the present invention will now be described with reference to the drawings.

【0008】図1は本発明の一実施例のブロック図であ
る。図2は図1の動作を示すタイロチャートである。
FIG. 1 is a block diagram of an embodiment of the present invention. FIG. 2 is a Tylo chart showing the operation of FIG.

【0009】起動信号検出器2は、加入者多重信号1に
含まれる電話器がオフフックした状態を検出し、その状
態を示す信号(オフフックしたタイムスロット部分が
“0”)21を出力する。
The activation signal detector 2 detects a state in which the telephone set included in the subscriber multiplex signal 1 is off-hook, and outputs a signal (the off-hook time slot portion is "0") 21 indicating the state.

【0010】タイムスロット番号発生器3は、加入者多
重信号1に同期し、タイムスロット番号を表わす2進数
31を出力する。
The time slot number generator 3 outputs a binary number 31 representing the time slot number in synchronization with the subscriber multiplexed signal 1.

【0011】待ち行列回路4は、起動信号検出器2の出
力21を用い、タイムスロット番号出力31を順次記憶
し、記憶順にタイムスロット番号出力41を出力する。
The queuing circuit 4 uses the output 21 of the activation signal detector 2 to sequentially store the time slot number output 31 and outputs the time slot number output 41 in the storage order.

【0012】制御回路5は、搬送線路が正常な時には、
図2(a)の加入者多重信号入力A,B,C,D,Eを
(b)搬送線路出力C,A,E,D,Bと配列すべく、
送信時分割スイチ6に送信制御アドレス51を出力し、
又、逆方向においては、図2(d)搬送線路入力10の
C,A,E,D,Bを(e)加入者多重信号出力71の
A,B,C,D,Eと配列すべく、受信時分割スイッチ
7に受信制御アドレス52を出力する。
When the carrier line is normal, the control circuit 5
In order to arrange the subscriber multiple signal inputs A, B, C, D, and E of FIG. 2A with the carrier line outputs C, A, E, D, and B of FIG.
Output the transmission control address 51 to the transmission time division switch 6,
Further, in the opposite direction, C, A, E, D and B of the carrier line input 10 in FIG. 2D should be arranged with A, B, C, D and E of the subscriber multiple signal output 71 of (e). , And outputs the reception control address 52 to the reception time division switch 7.

【0013】しかし、制御回路5は、搬送線路が障害に
なり、交換機側と加入者信号を送受信不能となった場合
には、非常回線を救済するため、図2(C)搬送線路出
力61′に示すように、加入者Aが電話器をオフフック
すると、非常回線Eに接続し、逆に非常回線Eが呼び出
された後、通話が可能なよう非常回線Eが加入者Aに接
続するため、送信時分割スイッチ6に送信制御アドレス
51を出力する。
However, in the case where the carrier line becomes an obstacle and the subscriber signal cannot be transmitted / received to / from the exchange side, the control circuit 5 rescues the emergency line. Therefore, the carrier line output 61 'in FIG. 2C is used. As shown in, when the subscriber A goes off-hook the telephone, the emergency line E is connected to the emergency line E, and after the emergency line E is called, the emergency line E is connected to the subscriber A so that the call can be made. The transmission control address 51 is output to the transmission time division switch 6.

【0014】選択回路8は搬送線路が正常時には受信時
分割スイッチ7の出力71を加入者側81に出力し、搬
送線路に障害が発生した場合には、送信時分割スイッチ
6の出力61を加入者側81に出力する。
The selection circuit 8 outputs the output 71 of the reception time division switch 7 to the subscriber side 81 when the carrier line is normal, and joins the output 61 of the transmission time division switch 6 when a failure occurs in the carrier line. It outputs to the person side 81.

【0015】[0015]

【発明の効果】以上説明したように本発明は、オフフッ
クされた加入者信号を送信時分割スイッチにより非常回
線に接続、又、その逆の接続を行い、その出力を本来の
受信時分割スイッチの出力と入替えるように構成したの
で、ディジタル搬送回路に障害が発生した場合、非常回
線への接続が加入者線搬送装置の遠隔地端局内で行える
という効果を有する。
As described above, according to the present invention, the off-hook subscriber signal is connected to the emergency line by the transmission time division switch and vice versa, and its output is connected to the original reception time division switch. Since the output is replaced with the output, when the digital carrier circuit fails, there is an effect that connection to the emergency line can be performed in the remote terminal station of the subscriber line carrier.

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

【図1】本発明の一実施例のブロック図である。FIG. 1 is a block diagram of an embodiment of the present invention.

【図2】図1に示した実施例の各部におけるタイムチャ
ートである。
FIG. 2 is a time chart in each part of the embodiment shown in FIG.

【符号の説明】[Explanation of symbols]

1 加入者多重信号 2 起動信号検出器 3 タイムスロット番号発生器 4 待ち行列回路 5 制御回路 6 送信時分割スイッチ 7 受信時分割スイッチ 8 選択回路 1 subscriber multiplexed signal 2 activation signal detector 3 time slot number generator 4 queuing circuit 5 control circuit 6 transmission time division switch 7 reception time division switch 8 selection circuit

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 電話加入者線をディジタル多重搬送化す
るディジタル加入者線搬送装置に用いられる非常回線接
続方式において、 加入者線多重化信号をタイムスロット入替し、搬送線路
側に出力する送信スイッチと、 前記搬送線路側から入力されるライン多重化信号をタイ
ムスロット入替し、加入者線路側に出力する受信スイッ
チと、 ディジタル搬送線路側に障害が起った場合のみ、前記受
信スイッチの出力を、前記送信スイッチの出力に切替る
選択手段とを有することを特徴とする非常回線接続方
式。
1. A transmission switch for replacing a subscriber line multiplexed signal in a time slot and outputting to a carrier line side in an emergency line connection system used in a digital subscriber line carrier device for digitally multiplexing a telephone subscriber line. And a receiving switch for replacing the time-slot of the line multiplexed signal input from the carrier line side and outputting to the subscriber line side, and an output of the receiving switch only when a failure occurs on the digital carrier line side. An emergency line connection system, comprising: a selection unit that switches to an output of the transmission switch.
【請求項2】 電話加入者線をディジタル多重搬送化す
るディジタル加入者線搬送装置に用いられる非常回線接
続方式において、 中央交換局と接続されているディジタル搬送線路に障害
が発生した時、加入者線多重化信号に含まれる加入者端
末がオフフックされた状態を検出する起動信号検出器
と、 前記加入者多重化信号と同期し、多重化されたタイムス
ロット番号を発生するタイムスロット番号発生器と、 該タイムスロット番号発生器のタイムスロット番号出力
を、前記起動信号検出器の出力により順次記憶する待ち
行列回路と、 該待ち行列回路に記憶されたタイムスロット番号を読み
出し、該タイムスロット番号で示される加入者信号を前
記加入者多重化信号内にあらかじめ配置された非常回線
タイムスロットに接続し、非常回線タイムスロットを前
記電話器をオフフックした加入者のタイムスロットに接
続するためのスイッチアドレスを発生する制御回路と、 該制御回路の発生するスイッチアドレスに従って加入者
線多重化信号をタイムスロット入替し、搬送線路側に出
力する送信スイッチと、 前記搬送線路側から入力されるライン多重化信号をタイ
ムスロット入替し、加入者線側に出力する受信スイッチ
と、 該受信スイッチの出力を、ディジタル搬送線路に障害が
起った時にのみ、前記送信スイッチの出力に切替える選
択回路とを備えることを特徴とする非常回線接続方式。
2. In an emergency line connection system used in a digital subscriber line carrier for digitally multiplexing a telephone subscriber line, when a failure occurs in a digital carrier line connected to a central exchange, the subscriber A start signal detector for detecting a state where a subscriber terminal included in a line multiplexed signal is off-hook, and a time slot number generator for generating a multiplexed time slot number in synchronization with the subscriber multiplexed signal. A queuing circuit for sequentially storing the time slot number output of the time slot number generator by the output of the activation signal detector, and reading the time slot number stored in the queuing circuit and indicating the time slot number Connected subscriber signal to the emergency line time slot pre-arranged in the subscriber multiplexed signal, and A control circuit for generating a switch address for connecting the slot to a time slot of a subscriber who has off-hooked the telephone set, and a subscriber line multiplex signal for time slot replacement according to the switch address generated by the control circuit, and a carrier line. Side, a receiving switch for outputting the line multiplexed signal input from the carrier line side to the subscriber line side by time slot switching, and the output of the receiving switch for the digital carrier line An emergency line connection system comprising: a selection circuit that switches to the output of the transmission switch only when it occurs.
JP26475091A 1991-10-14 1991-10-14 Emergency line connection method Expired - Lifetime JP2809244B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26475091A JP2809244B2 (en) 1991-10-14 1991-10-14 Emergency line connection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26475091A JP2809244B2 (en) 1991-10-14 1991-10-14 Emergency line connection method

Publications (2)

Publication Number Publication Date
JPH05110669A true JPH05110669A (en) 1993-04-30
JP2809244B2 JP2809244B2 (en) 1998-10-08

Family

ID=17407669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26475091A Expired - Lifetime JP2809244B2 (en) 1991-10-14 1991-10-14 Emergency line connection method

Country Status (1)

Country Link
JP (1) JP2809244B2 (en)

Also Published As

Publication number Publication date
JP2809244B2 (en) 1998-10-08

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