JPH05110666A - Intermediate repeater - Google Patents
Intermediate repeaterInfo
- Publication number
- JPH05110666A JPH05110666A JP3264495A JP26449591A JPH05110666A JP H05110666 A JPH05110666 A JP H05110666A JP 3264495 A JP3264495 A JP 3264495A JP 26449591 A JP26449591 A JP 26449591A JP H05110666 A JPH05110666 A JP H05110666A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- overhead
- output
- adder
- main
- 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
Links
Landscapes
- Time-Division Multiplex Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、中間中継装置に関し、
詳しくは、ディジタル伝送システムにおいてオーバヘッ
ドビットを用いて局間の打ち合わせを行う通話方式を用
いるもののうち、特に、中間中継局相互間において通話
を行う場合の中間中継装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate relay device,
More specifically, the present invention relates to an intermediate relay device particularly when a telephone call is made between intermediate relay stations, among the systems that use a communication system for making a meeting between stations by using overhead bits in a digital transmission system.
【０００２】[0002]
【従来の技術】従来、この種のシステムは、図２に示す
ように、端局装置に音声信号４Ｗ−ＳＡをディジタル信
号４Ｗ−ＳＤに変換する符号化部３、前記４Ｗ−ＳＤ信
号を主信号ＤＡＴＡ−Ｓに乗せるオーバヘッド挿入部
１、主信号ＤＡＴＡ−Ｒからオーバヘッド信号４Ｗ−Ｒ
Ｄを取り出すオーバヘッド分離部２、前記４Ｗ−ＲＤ信
号を音声信号４Ｗ−ＲＡに変換する復合化部４を有す
る。また、中間中継装置にも同様のオーバヘッド挿入部
１、オーバヘッド分離部２をＥ−Ｗ、Ｗ−Ｅ各１つず
つ、また符号化部３、復合化部４、及び受信したオーバ
ヘッド信号（４Ｗ−ＲＤ（Ｅ−Ｗ）または４Ｗ−ＲＤ
（Ｗ−Ｅ））と自局で生成したオーバヘッド信号４Ｗ−
ＳＤの何れかを選択するセレクタ５、６及び前記４Ｗ−
ＲＤ（Ｅ−Ｗ）と４Ｗ−ＲＤ（Ｗ−Ｅ）との何れかを選
択するセレクタ７を有する。2. Description of the Related Art Conventionally, as shown in FIG. 2, a system of this type mainly uses an encoding unit 3 for converting a voice signal 4W-SA into a digital signal 4W-SD in a terminal device and the 4W-SD signal. Overhead insertion unit 1 to be placed on signal DATA-S, main signal DATA-R to overhead signal 4W-R
It has an overhead separation unit 2 for extracting D, and a decoding unit 4 for converting the 4W-RD signal into a voice signal 4W-RA. Also, in the intermediate relay device, a similar overhead inserting unit 1 and overhead separating unit 2 are provided for each of EW and WE, an encoding unit 3, a decoding unit 4, and a received overhead signal (4W- RD (EW) or 4W-RD
(W-E)) and the overhead signal 4W-generated by the own station
Selectors 5 and 6 for selecting any of SD and the 4W-
It has a selector 7 for selecting either RD (EW) or 4W-RD (WE).
【０００３】次に動作について図１及び表１を参照し
て、説明する。図１において太線の矢印は主信号の流れ
を表す。Next, the operation will be described with reference to FIG. 1 and Table 1. In FIG. 1, bold arrows indicate the flow of main signals.
【０００４】[0004]
【表１】 １）、端局同志の通話時等、オーバヘッド信号をスル
ーとする場合にはセレクタ５、６をＴ側に接続すること
により、オーバヘッド分離部２が主信号から取り出した
オーバヘッド信号（４Ｗ−ＲＤ（Ｅ−Ｗ）及び４Ｗ−Ｒ
Ｄ（Ｗ−Ｅ））をオーバヘッド挿入部１を通して再び主
信号に乗せる。[Table 1] 1), when the overhead signal is to be through, such as during a call between terminal stations, by connecting the selectors 5 and 6 to the T side, the overhead signal (4W-RD (4W-RD ( EW) and 4W-R
D (W-E)) is put on the main signal again through the overhead insertion section 1.
【０００５】２）、中継局がＥ側の局（中継局または端
局）と通話する場合には、セレクタ５をＩ側に、セレク
タ７をＥ側に接続することにより、自局の音声４Ｗ−Ｓ
ＡをＥ側に向けて送る。2) When the relay station talks with the station on the E side (relay station or terminal station), the selector 5 is connected to the I side and the selector 7 is connected to the E side, so that the voice 4W of the own station is transmitted. -S
Send A toward E side.
【０００６】３）、中継局がＷ側の局（中継局または端
局）と通話する場合には、セレクタ６をＩ側に、セレク
タ７をＷ側に接続することにより、自局の音声４Ｗ−Ｓ
ＡをＷ側に向けて送る。3) When the relay station talks with the station on the W side (relay station or terminal station), the selector 6 is connected to the I side and the selector 7 is connected to the W side so that the voice of the own station is 4W. -S
Send A toward the W side.
【０００７】[0007]
【発明が解決しようとする課題】上述した従来の中間中
継装置は中継局側で通話を行うときには上流からのオー
バヘッド信号の代わりに自局で生成したオーバヘッド信
号を挿入することから、セレクタの制御が必要となり、
また中継局が通話中の時には端局同志の通話が行えなく
なるために、端局間の通話を常に確保するためには別の
オーバヘッド信号を必要とするという課題があった。The above-mentioned conventional intermediate relay device inserts the overhead signal generated by itself in place of the overhead signal from the upstream side when making a call at the relay station side, so that the selector control can be performed. Required,
Further, when the relay station is in a call, it becomes impossible to make a call between the end stations, so that there is a problem that another overhead signal is required to always secure a call between the end stations.
【０００８】本発明は従来の上記実情に鑑みてなされた
ものであり、従って本発明の目的は、従来の技術に内在
する上記課題を解決することを可能とした新規な中間中
継装置を提供することにある。The present invention has been made in view of the above-mentioned conventional circumstances, and therefore an object of the present invention is to provide a novel intermediate relay device which can solve the above-mentioned problems inherent in the prior art. Especially.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成する為
に、本発明に係る中間中継装置は、Ｗ−Ｅ側の主信号Ｄ
ＡＴＡ−Ｒ（Ｗ−Ｅ）からオーバヘッド信号４Ｗ−ＲＤ
（Ｗ−Ｅ）を取り出すオーバヘッド分離部（Ｗ−Ｅ）
と、前記オーバヘッド信号４Ｗ−ＲＤ（Ｗ−Ｅ）をアナ
ログ信号４Ｗ−ＲＡ（Ｗ−Ｅ）に変換する復合化部（Ｗ
−Ｅ）と、Ｅ−Ｗ側の主信号ＤＡＴＡ−Ｒ（Ｅ−Ｗ）か
らオーバヘッド信号４Ｗ−ＲＤ（Ｅ−Ｗ）を取り出すオ
ーバヘッド分離部（Ｅ−Ｗ）と、前記オーバヘッド信号
４Ｗ−ＲＤ（Ｅ−Ｗ）をアナログ信号４Ｗ−ＲＡ（Ｅ−
Ｗ）に変換する復合化部（Ｅ−Ｗ）と、前記２つのアナ
ログ信号４Ｗ−ＲＡ（Ｗ−Ｅ）、４Ｗ−ＲＡ（Ｅ−Ｗ）
を入力し両者の和をとった信号４Ｗ−ＲＡを出力する加
算器（モニタ用）と、音声入力信号から前記加算器（モ
ニタ用）の出力信号４Ｗ−ＲＡを除去した信号４Ｗ−Ｓ
Ａを出力するエコーキャンセラと、前記エコーキャンセ
ラの出力信号４Ｗ−ＳＡと前記復合化部（Ｗ−Ｅ）の出
力信号４Ｗ−ＲＡ（Ｗ−Ｅ）を入力し両者の和をとった
信号４Ｗ−ＳＡ（Ｗ−Ｅ）を出力する加算器（Ｗ−Ｅ）
と、前記エコーキャンセラの出力信号４Ｗ−ＳＡと前記
復合化部（Ｅ−Ｗ）の出力信号４Ｗ−ＲＡ（Ｅ−Ｗ）を
入力して両者の和をとった信号４Ｗ−ＳＡ（Ｅ−Ｗ）を
出力する加算器（Ｅ−Ｗ）と、前記加算器（Ｗ−Ｅ）の
出力信号４Ｗ−ＳＡ（Ｗ−Ｅ）をディジタル信号４Ｗ−
ＳＤ（Ｗ−Ｅ）に変換する符号化部（Ｗ−Ｅ）と、前記
加算器（Ｅ−Ｗ）の出力信号４Ｗ−ＳＡ（Ｅ−Ｗ）をデ
ィジタル信号４Ｗ−ＳＤ（Ｅ−Ｗ）に変換する符号化部
（Ｅ−Ｗ）と、前記４Ｗ−ＳＤ（Ｗ−Ｅ）信号をＷ−Ｅ
側の主信号出力ＤＡＴＡ−Ｓ（Ｗ−Ｅ）に乗せるオーバ
ヘッド挿入部（Ｗ−Ｅ）と、前記４Ｗ−ＳＤ（Ｅ−Ｗ）
信号をＥ−Ｗ側の主信号出力ＤＡＴＡ−Ｓ（Ｅ−Ｗ）に
乗せるオーバヘッド挿入部（Ｅ−Ｗ）とを備えて構成さ
れる。In order to achieve the above object, an intermediate relay apparatus according to the present invention is provided with a main signal D on the WE side.
Overhead signal 4W-RD from ATA-R (W-E)
Overhead separation unit (W-E) for extracting (W-E)
And a decoding unit (W which converts the overhead signal 4W-RD (WE) into an analog signal 4W-RA (WE).
-E), an overhead separation unit (EW) for extracting the overhead signal 4W-RD (EW) from the main signal DATA-R (EW) on the EW side, and the overhead signal 4W-RD ( EW) is an analog signal 4W-RA (E-
W) and a decoding unit (E-W), and the two analog signals 4W-RA (W-E) and 4W-RA (E-W).
And an output signal 4W-RA obtained by removing the output signal 4W-RA of the adder (for monitoring) from the voice input signal.
An echo canceller that outputs A, an output signal 4W-SA of the echo canceller and an output signal 4W-RA (WE) of the decoding unit (WE) are input, and a signal 4W- is obtained by summing the two. Adder (WE) that outputs SA (WE)
And an output signal 4W-SA of the echo canceller and an output signal 4W-RA (EW) of the decoding unit (EW) are input to obtain a signal 4W-SA (EW) ) And an output signal 4W-SA (WE) of the adder (WE) are output as a digital signal 4W-
An encoding unit (W-E) for converting into SD (W-E) and an output signal 4W-SA (E-W) of the adder (E-W) are converted into a digital signal 4W-SD (E-W). The encoding unit (EW) for conversion and the WE for the 4W-SD (WE) signal
Side main signal output DATA-S (W-E) and an overhead insertion part (W-E), and 4W-SD (E-W)
And an overhead insertion section (EW) that puts a signal on the main signal output DATA-S (EW) on the EW side.
【００１０】[0010]
【実施例】次に、本発明をその好ましい一実施例につい
て図面を参照して具体的に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the accompanying drawings with reference to the accompanying drawings.
【００１１】図１は本発明の一実施例を示すブロック構
成図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【００１２】まず、構成について説明する。First, the structure will be described.
【００１３】図１を参照するに、本発明の一実施例にお
いて、端局装置側は、音声入力信号４Ｗ−ＳＡをディジ
タル信号４Ｗ−ＳＤに変換する符号化部３と、前記４Ｗ
−ＳＤ信号を主信号出力ＤＡＴＡ−Ｓに乗せるオーバヘ
ッド挿入部１と、主信号入力ＤＡＴＡ−Ｒからオーバヘ
ッド信号４Ｗ−ＲＤを取り出すオーバヘッド分離部２
と、前記４Ｗ−ＲＤ信号を音声出力信号４Ｗ−ＲＡに変
換する複合化部４とを有し、中間中継装置側には、Ｗ−
Ｅ側の主信号ＤＡＴＡ−Ｒ（Ｗ−Ｅ）からオーバヘッド
信号４Ｗ−ＲＤ（Ｗ−Ｅ）を取り出すオーバヘッド分離
部２（Ｗ−Ｅ）と、前記４Ｗ−ＲＤ（Ｗ−Ｅ）信号を受
信音声信号４Ｗ−ＲＡ（Ｗ−Ｅ）に変換する復合化部４
（Ｗ−Ｅ）と、Ｅ−Ｗ側の主信号ＤＡＴＡ−Ｒ（Ｅ−
Ｗ）からオーバヘッド信号４Ｗ−ＲＤ（Ｅ−Ｗ）を取り
出すオーバヘッド分離部２（Ｅ−Ｗ）と、前記４Ｗ−Ｒ
Ｄ（Ｅ−Ｗ）信号を受信音声信号４Ｗ−ＲＡ（Ｅ−Ｗ）
に変換する復合化部４（Ｅ−Ｗ）と、前記２つの受信音
声信号４Ｗ−ＲＡ（Ｗ−Ｅ）、４Ｗ−ＲＡ（Ｅ−Ｗ）を
入力し両者の和をとった音声出力信号４Ｗ−ＲＡを出力
する加算器９（モニタ用）と、音声入力信号から前記加
算器９（モニタ用）の出力信号４Ｗ−ＲＡを除去した信
号４Ｗ−ＳＡを出力するエコーキャンセラ１２と、前記
エコーキャンセラ１２の出力信号４Ｗ−ＳＡと前記復合
化部４（Ｗ−Ｅ）の出力信号４Ｗ−ＲＡ（Ｗ−Ｅ）を入
力し両者の和をとった信号４Ｗ−ＳＡ（Ｗ−Ｅ）を出力
する加算器８（Ｗ−Ｅ）と、前記エコーキャンセラ１２
の出力信号４Ｗ−ＳＡと前記復合化部４（Ｅ−Ｗ）の出
力信号４Ｗ−ＲＡ（Ｅ−Ｗ）を入力し両者の和をとった
信号４Ｗ−ＳＡ（Ｅ−Ｗ）を出力する加算器８（Ｅ−
Ｗ）と、前記加算器８（Ｗ−Ｅ）の出力信号４Ｗ−ＳＡ
（Ｗ−Ｅ）をディジタル信号４Ｗ−ＳＤ（Ｗ−Ｅ）に変
換する符号化部３（Ｗ−Ｅ）と、前記符号化部の出力信
号４Ｗ−ＳＤ（Ｗ−Ｅ）をＷ−Ｅ側の主信号出力ＤＡＴ
Ａ−Ｓ（Ｗ−Ｅ）に乗せるオーバヘッド挿入部１（Ｗ−
Ｅ）と、前記加算器８（Ｅ−Ｗ）の出力信号４Ｗ−ＳＡ
（Ｅ−Ｗ）をディジタル信号４Ｗ−ＳＤ（Ｅ−Ｗ）に変
換する符号化部３（Ｅ−Ｗ）と、前記符号化部の出力信
号４Ｗ−ＳＤ（Ｅ−Ｗ）をＥ−Ｗ側の主信号出力ＤＡＴ
Ａ−Ｓ（Ｅ−Ｗ）に乗せるオーバヘッド挿入部１（Ｅ−
Ｗ）とを有する。Referring to FIG. 1, in one embodiment of the present invention, the terminal device side has an encoding unit 3 for converting a voice input signal 4W-SA into a digital signal 4W-SD, and the 4W.
-Overhead insertion unit 1 for placing the SD signal on the main signal output DATA-S, and overhead separation unit 2 for extracting the overhead signal 4W-RD from the main signal input DATA-R
And a composite unit 4 for converting the 4W-RD signal into a voice output signal 4W-RA.
An overhead separation unit 2 (W-E) that extracts an overhead signal 4W-RD (W-E) from the main signal DATA-R (W-E) on the E side, and a voice that receives the 4W-RD (W-E) signal Signal 4 W-RA (W-E) Decoding / Decoding Unit 4
(WE) and the main signal DATA-R (E- on the EW side.
An overhead separation unit 2 (EW) for extracting an overhead signal 4W-RD (EW) from W);
Receives D (EW) signal Voice signal 4W-RA (EW)
A demultiplexing unit 4 (EW) for converting into two and the two received voice signals 4W-RA (W-E) and 4W-RA (E-W) are input and a voice output signal 4W is obtained by summing the two. -RA, an adder 9 (for monitor), an echo canceller 12 for outputting a signal 4W-SA obtained by removing the output signal 4W-RA of the adder 9 (for monitor) from a voice input signal, and the echo canceller The output signal 4W-SA of 12 and the output signal 4W-RA (WE) of the decoding unit 4 (WE) are input, and a signal 4W-SA (WE) obtained by summing both is output. The adder 8 (W-E) and the echo canceller 12
The output signal 4W-SA and the output signal 4W-RA (EW) of the decoding unit 4 (EW) are input, and the sum of both is output to output the signal 4W-SA (EW). Container 8 (E-
W) and the output signal 4W-SA of the adder 8 (WE)
An encoder 3 (W-E) for converting (W-E) into a digital signal 4W-SD (W-E) and an output signal 4W-SD (W-E) of the encoder from the W-E side. Main signal output of DAT
Overhead insertion part 1 (W-
E) and the output signal 4W-SA of the adder 8 (EW)
An encoder 3 (EW) that converts (EW) into a digital signal 4W-SD (EW) and an output signal 4W-SD (EW) from the encoder 3 is provided on the EW side. Main signal output of DAT
Overhead insertion section 1 (E-
W) and.
【００１４】次に、動作の説明を行う。Next, the operation will be described.
【００１５】端局から送られてきたオーバヘッド信号４
Ｗ−ＲＤ（Ｗ−Ｅ／Ｅ−Ｗ）は、中間中継装置のオーバ
ヘッド分離部２で一旦分離され、復号器４によって音声
信号に変換されるが、加算器８を通って再び符号器３に
よってディジタル信号に再変換され、オーバヘッド挿入
部１で主信号に戻される。このために端局同志の通話が
常時可能となる。この時、分離されたオーバヘッド信号
４Ｗ−ＲＡ（Ｗ−Ｅ／Ｅ−Ｗ）は、Ｗ−Ｅ／Ｅ−Ｗの両
方向の信号を加算器９（モニタ用）によって加算したも
の（４Ｗ−ＲＡ）をモニタするために、中間中継装置に
おいてＥ側／Ｗ側両方向のモニタが可能となる。Overhead signal 4 sent from the terminal station
W-RD (WE / EW) is once separated by the overhead separation unit 2 of the intermediate relay device and converted into a voice signal by the decoder 4, but passes through the adder 8 and again by the encoder 3. It is reconverted into a digital signal and is returned to the main signal in the overhead insertion section 1. For this reason, telephone calls between terminal stations are always possible. At this time, the separated overhead signal 4W-RA (WE / EW) is a signal obtained by adding signals in both directions of WE / EW by the adder 9 (for monitor) (4W-RA). Therefore, the E-side / W-side directions can be monitored in the intermediate relay device.
【００１６】また、中間中継装置側から送話する場合に
は、エコーキャンセラ１２によって音声入力信号からモ
ニタ信号４Ｗ−ＲＡを除去した後に、送話信号４Ｗ−Ｓ
Ａと受信音声信号４Ｗ−ＲＡ（Ｗ−Ｅ／Ｅ−Ｗ）とを加
算器８によって加算処理した後に符号器３によって符号
化したものを主信号に乗せて送っており、しかもＷ−Ｅ
／Ｅ−Ｗ両方向に対して送信するため常時両方向に対し
送話が可能となる。When transmitting from the side of the intermediate relay device, the echo canceller 12 removes the monitor signal 4W-RA from the voice input signal and then transmits the transmission signal 4W-S.
A and the received voice signal 4W-RA (WE / EW) are added by the adder 8 and then encoded by the encoder 3 and sent on the main signal.
/ EW Since data is transmitted in both directions, it is possible to always transmit in both directions.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によれば、
ディジタル伝送システムのオーバヘッド信号を用いて局
間の打ち合わせ通話機能を実現する中間中継装置におい
て、Ｗ側より受信したオーバヘッド信号と自局より送話
する信号との加算処理を行いＥ側へ送信し、Ｅ側より受
信したオーバヘッド信号と自局より送話する信号との加
算処理を行いＷ側へ送信し、Ｗ側より受信したオーバヘ
ッド信号とＥ側より受信したオーバヘッド信号との加算
結果をモニタすることにより、セレクタの切り替え等の
制御を一切行わずに任意の端局中継装置、中間中継装置
間で通話を行うことが可能になる。更に、同一伝送路を
使用する全ての端局中継装置、中間中継装置が同時に相
互通話を行うことも可能である。As described above, according to the present invention,
In an intermediate relay device which realizes a talk communication function between stations by using an overhead signal of a digital transmission system, an overhead signal received from the W side and a signal transmitted from the own station are added and transmitted to the E side, Addition processing of the overhead signal received from the E side and the signal transmitted from the local station is performed and transmitted to the W side, and the addition result of the overhead signal received from the W side and the overhead signal received from the E side is monitored. As a result, it becomes possible to make a call between arbitrary terminal station relay devices and intermediate relay devices without performing any control such as switching of selectors. Further, it is also possible that all the terminal relay devices and the intermediate relay devices that use the same transmission line can make a mutual call at the same time.
【図１】本発明の一実施例を示すブロック構成図であ
る。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】従来技術のブロック図である。FIG. 2 is a block diagram of the prior art.
１…オーバヘッド挿入部 ２…オーバヘッド分離部 ３…符号化部 ４…復合化部 ５…セレクタ（Ｗ−Ｅ） ６…セレクタ（Ｅ−Ｗ） ７…セレクタ（Ｗ／Ｅ） ８、９…加算器 １０…送話器 １１…受話器 １２…エコーキャンセラ DESCRIPTION OF SYMBOLS 1 ... Overhead insertion part 2 ... Overhead separation part 3 ... Encoding part 4 ... Decoding part 5 ... Selector (WE) 6 ... Selector (EW) 7 ... Selector (W / E) 8, 9 ... Adder 10 ... Speaker 11 ... Receiver 12 ... Echo canceller
Claims (1)
信号を用いて局間の打ち合わせ通話機能を実現する中間
中継装置において、Ｗ−Ｅ側の主信号ＤＡＴＡ−Ｒ（Ｗ
−Ｅ）からオーバヘッド信号４Ｗ−ＲＤ（Ｗ−Ｅ）を取
り出すオーバヘッド分離部（Ｗ−Ｅ）と、前記オーバヘ
ッド信号４Ｗ−ＲＤ（Ｗ−Ｅ）をアナログ信号４Ｗ−Ｒ
Ａ（Ｗ−Ｅ）に変換する復号化部（Ｗ−Ｅ）と、Ｅ−Ｗ
側の主信号ＤＡＴＡ−Ｒ（Ｅ−Ｗ）からオーバヘッド信
号４Ｗ−ＲＤ（Ｅ−Ｗ）を取り出すオーバヘッド分離部
（Ｅ−Ｗ）と、前記オーバヘッド信号４Ｗ−ＲＤ（Ｅ−
Ｗ）をアナログ信号４Ｗ−ＲＡ（Ｅ−Ｗ）に変換する復
合化部（Ｅ−Ｗ）と、前記２つのアナログ信号４Ｗ−Ｒ
Ａ（Ｗ−Ｅ）、４Ｗ−ＲＡ（Ｅ−Ｗ）を入力し両者の和
をとった信号４Ｗ−ＲＡを出力する加算器（モニタ用）
と、音声入力信号から前記加算器（モニタ用）の出力信
号４Ｗ−ＲＡを除去した信号４Ｗ−ＳＡを出力するエコ
ーキャンセラと、前記エコーキャンセラの出力信号４Ｗ
−ＳＡと前記復合化部（Ｗ−Ｅ）の出力信号４Ｗ−ＲＡ
（Ｗ−Ｅ）を入力し両者の和をとった信号４Ｗ−ＳＡ
（Ｗ−Ｅ）を出力する加算器（Ｗ−Ｅ）と、前記エコー
キャンセラの出力信号４Ｗ−ＳＡと前記復合化部（Ｅ−
Ｗ）の出力信号４Ｗ−ＲＡ（Ｅ−Ｗ）を入力し両者の和
をとった信号４Ｗ−ＳＡ（Ｅ−Ｗ）を出力する加算器
（Ｅ−Ｗ）と、前記加算器（Ｗ−Ｅ）の出力信号４Ｗ−
ＳＡ（Ｗ−Ｅ）をディジタル信号４Ｗ−ＳＤ（Ｗ−Ｅ）
に変換する符号化部（Ｗ−Ｅ）と、前記加算器（Ｅ−
Ｗ）の出力信号４Ｗ−ＳＡ（Ｅ−Ｗ）をディジタル信号
４Ｗ−ＳＤ（Ｅ−Ｗ）に変換する符号化部（Ｅ−Ｗ）
と、前記４Ｗ−ＳＤ（Ｗ−Ｅ）信号をＷ−Ｅ側の主信号
出力ＤＡＴＡ−Ｓ（Ｗ−Ｅ）に乗せるオーバヘッド挿入
部（Ｗ−Ｅ）と、前記４Ｗ−ＳＤ（Ｅ−Ｗ）信号をＥ−
Ｗ側の主信号出力ＤＡＴＡ−Ｓ（Ｅ−Ｗ）に乗せるオー
バヘッド挿入部（Ｅ−Ｗ）とを備えることを特徴とする
中間中継装置。1. In an intermediate relay device for realizing a talk communication function between stations by using an overhead signal of a digital transmission system, a main signal DATA-R (W
-E) an overhead separation unit (W-E) for extracting the overhead signal 4W-RD (W-E) from the overhead signal 4W-RD (W-E) and an analog signal 4W-R.
A decoding unit (W-E) for converting into A (W-E), and E-W
Overhead signal 4W-RD (EW) for extracting the overhead signal 4W-RD (EW) from the main signal DATA-R (EW) on the side, and the overhead signal 4W-RD (EW).
W) to an analog signal 4W-RA (EW), and a decoding unit (EW), and the two analog signals 4W-R.
Adder (for monitor) that inputs A (W-E) and 4W-RA (E-W) and outputs the signal 4W-RA which is the sum of both
An echo canceller which outputs a signal 4W-SA obtained by removing the output signal 4W-RA of the adder (for monitor) from the audio input signal, and an output signal 4W of the echo canceller.
-SA and the output signal 4W-RA of the decoding unit (WE)
(W-E) input and the sum of both signals 4W-SA
(WE) outputting (WE), the output signal 4W-SA of the echo canceller, and the decoding unit (E-).
W) output signal 4W-RA (EW) is input and the sum of both is output as signal 4W-SA (EW), and an adder (EW) and the adder (WE) ) Output signal 4W-
SA (WE) digital signal 4W-SD (WE)
To the encoder (WE) and the adder (E-
W) output signal 4W-SA (EW) is converted to a digital signal 4W-SD (EW) encoding unit (EW)
And an overhead insertion section (W-E) for putting the 4W-SD (W-E) signal on the main signal output DATA-S (W-E) on the W-E side, and the 4W-SD (E-W). E- signal
An intermediate relay device, comprising: an overhead insertion section (EW) to be placed on a main signal output DATA-S (EW) on the W side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3264495A JPH05110666A (en) | 1991-10-14 | 1991-10-14 | Intermediate repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3264495A JPH05110666A (en) | 1991-10-14 | 1991-10-14 | Intermediate repeater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05110666A true JPH05110666A (en) | 1993-04-30 |
Family
ID=17404035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3264495A Pending JPH05110666A (en) | 1991-10-14 | 1991-10-14 | Intermediate repeater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05110666A (en) |
-
1991
- 1991-10-14 JP JP3264495A patent/JPH05110666A/en active Pending
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