JPH04159833A - Intermediate repeater - Google Patents
Intermediate repeaterInfo
- Publication number
- JPH04159833A JPH04159833A JP28622990A JP28622990A JPH04159833A JP H04159833 A JPH04159833 A JP H04159833A JP 28622990 A JP28622990 A JP 28622990A JP 28622990 A JP28622990 A JP 28622990A JP H04159833 A JPH04159833 A JP H04159833A
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- Prior art keywords
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- signal
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- 230000005236 sound signal Effects 0.000 claims description 48
- 238000000926 separation method Methods 0.000 claims description 23
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000000284 extract Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、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舎間の打合わせを行う通話方式に利
用される。特に、中間中継局相互間で通話を行う場合の
中間中継装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is utilized in a telephone communication system in which overhead bits are used to conduct meetings between stations in a digital transmission system. In particular, the present invention relates to an intermediate relay device for communicating between intermediate relay stations.
本発明は、オーバヘッド信号を用いて局舎間の打合せを
中間中継局で行う手段において、他局が送受するオーバ
ヘッド信号と自局が送受するオーバヘッド信号とを重畳
することにより、セレクタの切替えを含む制御を除去す
ることができるようにしたものである。The present invention is a means for conducting a meeting between stations at an intermediate relay station using an overhead signal, which includes switching of a selector by superimposing an overhead signal transmitted/received by another station and an overhead signal transmitted/received by the own station. This makes it possible to remove controls.
従来例は、第２図に示すように、端局装置に音声信号４
Ｗ−３＾をディジタル信号４Ｗ−３Ｄに変換する符号化
部２３、ディジタル信号４Ｗ−８Ｏを主信号ＤＡＴ八−
３に乗せるオーバヘッド挿入部２１．主信号ＤＡＴ＾−
Ｒからオーバヘッド信号４トＲ口を取り出すオーバヘッ
ド分離部２２、オーバヘッド信号４１１−ＲＤを音声信
号４Ｗ−ＲＡに変換する復号化部２４を有する。また、
中間中継装置にもε−Ｗ 、 Ｗ−Ｅ各１つずつ、同様
のオーバヘッド挿入部１１１および１２１ とオーバヘ
ッド分離部１１２および１２２と、また符号化部１０３
と、復号化部１０４と、受信したオーバヘッド信号（４
１１−ＲＤ （ε−Ｗ）または４トＲＤ （Ｗ−Ｅ）
）と自局で生成したオーバヘッド信号４ｗ−５ｏの何れ
かを選択するセレクタ１０５および１０６と、オーバヘ
ッド信号４Ｗ−ＲＤ（ε−１１）とオーバヘッド信号４
トＲＤ （Ｗ−Ｅ）との何れかを選択するセレクタ１０
７とを有する。In the conventional example, as shown in FIG.
The encoding unit 23 converts W-3^ into a digital signal 4W-3D, and the digital signal 4W-8O is converted into a main signal DAT8-
3. Overhead insertion part 21. Main signal DAT^-
It has an overhead separation section 22 that extracts 4 overhead signals from R, and a decoding section 24 that converts the overhead signal 411-RD into an audio signal 4W-RA. Also,
The intermediate relay device also includes one each of ε-W and W-E, similar overhead insertion units 111 and 121, overhead separation units 112 and 122, and encoding unit 103.
, the decoding unit 104 and the received overhead signal (4
11-RD (ε-W) or 4-RD (W-E)
) and the overhead signal 4w-5o generated by the own station, selectors 105 and 106 that select either the overhead signal 4W-RD (ε-11) or the overhead signal 4
selector 10 for selecting either
7.
次に、動作について第２図および表を参照して説明する
。第１図で太線の矢印は主信号の流れを表す。Next, the operation will be explained with reference to FIG. 2 and the table. In FIG. 1, thick arrows represent the flow of main signals.
１） 端局同志の通話時等でオーバヘッド信号をスルー
とする場合は、セレクタ１０５および１０６をＴ側に接
続することにより、オーバヘッド分離部１１２および１
２２が主信号から取り出したオーバヘッド信号４Ｗ−Ｒ
Ｄ （Ｅ−Ｗ）および４Ｗ−ＲＤ（トＥ）をオーバヘッ
ド挿入部１１１および１２１を通して再び主信号に乗せ
る。1) When passing the overhead signal during a call between terminal stations, etc., connect the selectors 105 and 106 to the T side to separate the overhead signals from the overhead separation units 112 and 1.
22 is the overhead signal 4W-R extracted from the main signal.
D (E-W) and 4W-RD (E) are placed on the main signal again through the overhead insertion sections 111 and 121.
２） 中継局が端局Ｅ側（または中継局）と通話する場
合は、セレクタ１０５をＴ側に、セレクタ１０７をＥ側
に接続することにより、自局の音声信号４Ｗ−８＾を端
局Ｅ側に向けて送る。2) When the relay station communicates with the terminal E side (or relay station), by connecting the selector 105 to the T side and the selector 107 to the E side, the voice signal 4W-8^ of the own station is transmitted to the terminal station. Send it towards the E side.
３） 中継局が端局Ｗ側（または中継局）と通話する場
合は、セレクタ１０６をＴ側に、セレクタ１０７をＷ側
に接続することにより、自局の音声信号４トＳ＾を端局
Ｗ側に向けて送る。3) When the relay station communicates with the terminal station W side (or relay station), by connecting the selector 106 to the T side and the selector 107 to the W side, the voice signal of the own station is transferred to the terminal station. Send it towards the W side.
（以下本頁余白）
〔発明が解決しようとする課題〕
このような従来の中間中継装置は中継局側で通話を行う
とき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ので、セレクタの制
御が必要になり、また中継局が通話中のときは端局同志
の通話が行えなくなるので、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欠点があ
った。(Hereinafter, in the margins of this page) [Problem to be solved by the invention] When making a call on the relay station side, such a conventional intermediate relay device inserts an overhead signal generated at the own station instead of an overhead signal from upstream. Therefore, it is necessary to control the selector, and when the relay station is busy, calls between end stations cannot be made, so another overhead signal is required to always ensure communication between end stations. There were drawbacks.
本発明は、このような欠点を除去するもので、オーバヘ
ッド信号のルート処理に際してセレクタによる切替えを
不要にする中間中継装置を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to eliminate such drawbacks, and to provide an intermediate relay device that eliminates the need for switching by a selector during route processing of overhead signals.
本発明は、一方の端局とこの端局に対向する他方の端局
との間のディジタル伝送路に挿入され、上記一方の端局
から到来する信号からオー／ ＸＪヘッド信号を抽出す
る第一オーバヘッド分離部と、上記他方の端局から到来
する信号からオー／ｚＰヘッド信号を抽出する第二オー
バへ・ラド分離部と、上記第一オーバヘッド分離部を経
由し、上記他方の端局に伝送される信号にオーバヘッド
信号を付加する第一オーバヘッド挿入部と、上記第ニオ
−、＋ （ヘッド分離部を経由し、上記一方の端局に伝
送される信号にオーバヘッド信号を付加する第ニオ−７
＜ヘッド挿入部と、送信音声信号を生成する送話器と、
受信音声信号を再生する受話器とを備えた中間中継装置
において、上記第一オー／＜ヘッド分離部で抽出された
オーバヘッド信号を音声信号に変換する第一復号化部と
、上記第二オーツくへ・ラド分離部で抽出された第一オ
ー）〈ヘッド部を音声信号に変換する第二復号化部と、
上記送話器で生成された送信音声信号とこの第一復号化
部で変換された音声信号との和を求める第一加算器と、
この第一加算器で求まる和の音声信号を相当のオーバヘ
ッド信号に変換し、このオーバヘッド信号を上記第一オ
ーバヘッド挿入部で付加されるオーバへ・ンド信号とす
る第一符号化器と、上記送話器で生成された送信音声信
号とこの第二復号化部で変換された音声信号との和を求
める第二加算器と、この第二加算器で求まる和の音声信
号を相当のオーバヘッド信号に変換し、このオーバヘッ
ド信号を上記第二オーバヘッド挿入部で付加されるオー
バヘッド信号とする第二符号化器とを備えたことを特徴
とする。The present invention provides a first terminal that is inserted into a digital transmission path between one terminal station and another terminal station opposite to this terminal station, and extracts an O/XJ head signal from a signal arriving from the one terminal station. an overhead separation unit, a second overhead/rad separation unit that extracts the O/zP head signal from the signal arriving from the other terminal station, and transmission to the other terminal station via the first overhead separation unit. a first overhead insertion section that adds an overhead signal to the signal transmitted to the terminal station;
<A head insertion section, a transmitter that generates a transmitted audio signal,
an intermediate relay device comprising a receiver for reproducing a received audio signal;・A second decoding unit that converts the first audio signal extracted by the Rad separation unit into an audio signal;
a first adder that calculates the sum of the transmitted audio signal generated by the transmitter and the audio signal converted by the first decoding unit;
a first encoder that converts the sum audio signal obtained by the first adder into a corresponding overhead signal, and converts this overhead signal into an overhead signal added by the first overhead insertion section; a second adder that calculates the sum of the transmitted audio signal generated by the speaker and the audio signal converted by the second decoding section; The present invention is characterized by comprising a second encoder that converts the overhead signal and uses the overhead signal as an overhead signal added by the second overhead insertion section.
ここで、上記第一復号化部で変換された音声信号と上記
第二復号化部で変換された音声信号と和を求め、この和
の音声信号を上記受話器に与える第三加算器を備えるこ
とが望ましい。Here, a third adder is provided that calculates the sum of the audio signal converted by the first decoding unit and the audio signal converted by the second decoding unit, and provides the summed audio signal to the receiver. is desirable.
一方の端局から受信したオーバヘッド信号と自局が送話
する信号との加算処理を行って他方の局に送信し、他方
の端局から受信したオーバヘッド信号と自局が送話する
信号きの加算処理を行って一方の局に送信し、一方の端
局から受信したオーバヘッド信号と他方の端局から受信
したオーバヘッド信号との加算結果をモニタする。これ
により、セレクタの切替えなどの制御なしに、任意の端
局と中継局との間で通話が行える。The overhead signal received from one terminal station and the signal transmitted by the local station are added together and sent to the other station, and the overhead signal received from the other terminal station is combined with the signal transmitted by the local station. Addition processing is performed and transmitted to one station, and the addition result of the overhead signal received from one terminal station and the overhead signal received from the other terminal station is monitored. Thereby, a call can be made between any terminal station and the relay station without control such as switching of selectors.
以下、本発明の一実施例について図面を参照して説明す
る。第１図はこの実施例のブロック図である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of this embodiment.
まず、この実施例の構成について説明する。First, the configuration of this embodiment will be explained.
中間中継装置側には、Ｗ−Ｅ側の主信号ＤＡＴＡ−Ｒ（
Ｌ）：）からオーバヘッド信号４Ｗ−ＲＤ （Ｗ−８）
を取り出すオーバヘッド分離部１１２、このオーバヘッ
ド信号４Ｗ−ＲＤ （Ｗ−Ｂ）を受信音声信号４１１−
ＲＡ （Ｗ−Ｅ）に変換する復号化部１１４ 、Ｅ−Ｗ
側の主信号ＤＡＴＡ−Ｒ（Ｅ−Ｗ）からオーバヘッド信
号４Ｗ−ＲＤ（ε−Ｗ）を取り出すオーバヘッド分離部
１１２、このオーバヘッド信号４Ｗ−ＲＤ （Ｅ−Ｗ）
を受信音声信号４ＬＲ＾（ト％ｌ）に変換する復号化部
１２４．２つの受信音声信号４％１−ＲＡ（Ｗ−Ｂ）お
よび４Ｗ−ＲＡ （Ｅ−Ｗ）を入力し、両者の和をとっ
た音声出力信号４ＬＲ＾を出力する加算器１０９（モニ
タ用）、音声入力信号４Ｗ−３Ａと受信音声信号４トＲ
Ａ （Ｗ−Ｅ）とを入力し、両者の和をとった送信音声
信号４Ｗ−３Ａ （Ｗ−Ｅ）を出力する加算器１１８、
送信音声信号４Ｗ’ＳＡ （１１１−Ｂ）をディジタル
信号４Ｗ−３Ｄ （ＬＥ）に変換する符号化部１１３、
このディジタル信号４Ｗ−３Ｄ （トＥ）をＷ−Ｅ側の
主信号出力ＤＡＴＡ−３（％１ｌ−Ｅ） に乗せるオー
バヘッド挿入部１１１、音声入力信号４ト舒と受信音声
信号４Ｗ−ＲＡ （Ｅ−Ｗ）を入力し、両者の和をとっ
た送信音声信号４Ｗ−３＾（トＷ）を出力する加算器１
２８、送信音声信号４Ｗ−３Ａ （Ｅ−Ｗ）をディジタ
ル信号４Ｗ−３Ｄ （Ｅ−Ｗ）に変換する符号化部１２
３、このディジタル信号４Ｗ−３［） （ＥＪ）をＥ−
Ｗ側の主信号出力１’）ＡＴ八−Ｓ （Ｅ−胃）に乗せ
るオーバヘッド挿入部１２１を有する。On the intermediate relay device side, the main signal DATA-R (
Overhead signal 4W-RD (W-8) from L):)
The overhead separation unit 112 extracts the overhead signal 4W-RD (W-B), and receives the overhead signal 4W-RD (W-B) as the audio signal 411-
A decoding unit 114 converting into RA (W-E), E-W
An overhead separation unit 112 extracting an overhead signal 4W-RD (ε-W) from the side main signal DATA-R (E-W), this overhead signal 4W-RD (E-W)
A decoding unit 124 converts the received audio signal 4LR^(t%l) into the received audio signal 4%1-RA(W-B) and 4W-RA(E-W), and calculates the sum of both. adder 109 (for monitor) that outputs the audio output signal 4LR^, which outputs the audio input signal 4W-3A and the received audio signal 4R
an adder 118 that inputs A (W-E) and outputs a transmission audio signal 4W-3A (W-E) that is the sum of both;
an encoding unit 113 that converts the transmitted audio signal 4W'SA (111-B) into a digital signal 4W-3D (LE);
An overhead insertion section 111 that puts this digital signal 4W-3D (E) on the main signal output DATA-3 (%1l-E) on the W-E side, an audio input signal 4T and a received audio signal 4W-RA (E). -W) and outputs the transmission audio signal 4W-3^(tW) which is the sum of both.
28. Encoding unit 12 that converts the transmitted audio signal 4W-3A (E-W) into a digital signal 4W-3D (E-W)
3. Convert this digital signal 4W-3[) (EJ) to E-
It has an overhead insertion part 121 to be placed on the main signal output 1') AT8-S (E-stomach) on the W side.
すなわち、この実施例は、第１図に示すように、端局（
Ｗ側）とこの端局（Ｗ側）に対向する端局（Ｅ側）との
間のディジタル伝送路に挿入され、端局（Ｗ側）から到
来する信号からオーバヘッド信号を抽出するオーバヘッ
ド分離部１１２と、端局（Ｅ側）から到来する信号から
オーバヘッド信号を抽出するオーバヘッド分離部１２２
と、オーバヘッド分離部１１２を経由し、端局（Ｅ側）
に伝送される信号にオーバヘッド信号を付加するオーバ
ヘッド挿入部１１１と、オーバヘッド分離部１２２を経
由し、端局（Ｗ側）に伝送される信号にオーバヘッド信
号を付加するオーバヘッド挿入部１２１ と、送信音声
信号を生成する送話器１０１０と、受信音声信号を再生
する受話器Ｌｏｌｌとを備え、さらに、本発明の特徴と
する手段として、オーバヘッド分離部１１２で抽出され
たオーバヘッド信号を音声信号に変換する復号化部１１
４と、オーバヘッド分離部１２２で抽出されたオーバヘ
ッド信号を音声信号に変換する復号化部１２４と、送話
器１０１０で生成された送信音声信号とこの復号化部１
１４で変換された音声信号との和を求める加算器１１８
と、加算器１１８で求まる和の音声信号を相当のオーバ
ヘッド信号に変換し、このオーバヘッド信号をオーバヘ
ッド挿入部１１１で付加されるオーバヘッド信号とする
符号化器１１３と、送話器１０１０で生成された送信音
声信号とこの復号化部１２４で変換された音声信号との
和を求める加算器１２８と、この加算器１２８で求まる
和の音声信号を相当のオーバヘッド信号に変換し、この
オーバヘッド信号をオーバヘッド挿入部１２１に付加さ
れるオーバヘッド信号とする符号化器１２３と、復号化
部１１４で変換された音声信号と復号化部１２４で変換
された音声信号と和を求め、この和の音声信号を上記受
話器に与える加算器１０９とを備える。That is, in this embodiment, as shown in FIG.
An overhead separation unit that is inserted into the digital transmission path between the terminal station (W side) and the terminal station (E side) opposite to this terminal station (W side), and extracts an overhead signal from the signal arriving from the terminal station (W side). 112, and an overhead separation unit 122 that extracts an overhead signal from a signal arriving from the terminal station (E side).
and the terminal station (E side) via the overhead separation unit 112.
an overhead insertion section 111 that adds an overhead signal to a signal transmitted to the terminal station, an overhead insertion section 121 that adds an overhead signal to a signal transmitted to the terminal station (W side) via an overhead separation section 122, and an overhead insertion section 121 that adds an overhead signal to a signal transmitted to the terminal station (W side). It is equipped with a transmitter 1010 that generates a signal, and a receiver Loll that reproduces a received audio signal, and further includes decoding that converts the overhead signal extracted by the overhead separation unit 112 into an audio signal as a feature of the present invention. conversion part 11
4, a decoding unit 124 that converts the overhead signal extracted by the overhead separation unit 122 into an audio signal, and a transmission audio signal generated by the transmitter 1010 and the decoding unit 1
Adder 118 that calculates the sum with the audio signal converted in step 14
and an encoder 113 that converts the sum of the audio signals found by the adder 118 into a corresponding overhead signal and uses this overhead signal as an overhead signal added by the overhead insertion section 111, An adder 128 calculates the sum of the transmitted audio signal and the audio signal converted by the decoding unit 124, converts the sum audio signal found by the adder 128 into a corresponding overhead signal, and inserts this overhead signal into the overhead signal. The encoder 123 adds the audio signal converted by the decoding unit 114 to the audio signal converted by the decoding unit 124 as an overhead signal added to the audio receiver 121, and calculates the sum of the audio signal converted by the decoding unit 124. and an adder 109 that provides the input signal.
次に、この実施例動作の説明を行う。Next, the operation of this embodiment will be explained.
端局から送られてきたオーバヘッド信号４Ｗ−ＲＤ（Ｗ
−Ｅ／ＩＥ−Ｗ）は中間中継装置のオーバヘッド分離部
１１２（１２２）で−旦分離され、復号化部１１４ （
１２４）によって音声信号に変換されるが、加算器１１
ｇ（１２ｇ）を通って再び符号化部１１３（１２３）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１１１（１２１）で主信号に戻される。このため端局
同志の通話が常時可能になる。このときに、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１０９（モニタ
用）によって加算した音声出力信号４Ｗ−ＲＡをモニタ
するため、中間中継装置でＥ側／Ｗ側両方向のモニタが
可能になる。また、中間中継装置側から送話する場合は
、送話信号４Ｗ−３Ａと受信音声信号４１９−ＲＡ （
１１−８／ε−１％Ｉ）とを加算器１１８ （１２８＞
によって加算処理した後に符号化部１１３ （１２３）
で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／Ｂ−Ｗ両方向に対して送信するので常時両方向
に対して送話が可能になる。Overhead signal 4W-RD (W
-E/IE-W) is first separated by the overhead separation unit 112 (122) of the intermediate relay device, and the decoding unit 114 (
124) into an audio signal, but the adder 11
g (12g), is reconverted into a digital signal by the encoding unit 113 (123), and is returned to the main signal by the overhead insertion unit 111 (121). Therefore, communication between terminal stations is always possible. At this time, the separated overhead signal 4W-RA (W-E/E-W) is
Since the audio output signal 4W-RA obtained by adding the signals in both directions of W-E and E-W by the adder 109 (for monitoring) is monitored, it is possible to monitor both the E side and the W side with the intermediate relay device. In addition, when transmitting a call from the intermediate relay device side, the transmitting signal 4W-3A and the receiving audio signal 419-RA (
11-8/ε-1%I) and adder 118 (128>
After addition processing by the encoding unit 113 (123)
The encoded data is sent along with the main signal, and since it is transmitted in both the W-E and B-W directions, it is possible to transmit speech in both directions at all times.
本発明は、以上説明したように、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でき
る効果がある。さらに、同一伝送路を使用する全ての端
局中継装置および中間中継装置が同時に相互通話を行う
ことができる効果がある。As explained above, the present invention adds the overhead signal received from the W side and the signal transmitted from the own station, and transmits it to the E side, and adds the overhead signal received from the E side and the signal transmitted from the own station. By performing addition processing with the signal from the W side and transmitting it to the W side, and monitoring the addition result of the overhead signal received from the W side and the overhead signal received from the E side, the signal can be added without any control such as switching the selector. This has the advantage that calls can be made between arbitrary terminal relay devices and intermediate relay devices. Furthermore, there is an effect that all terminal relay devices and intermediate relay devices using the same transmission path can communicate with each other at the same time.
第１図は本発明実施例のブロック図。
第２図は従来例のブロック図。
２１．３１．１１１．１２１・・・オーバヘッド挿入部
、２２．３２．１１２．１２２・・・オーバヘッド分離
部、２３．３３．１０３．１１３．１２３・・・符号化
部、２４．３４．１０４．１１４．１２４・・・復号化
部、１０５．１０６．１０７・・・セレクタ、１０９．
１１８．１２８・・・加算器、２１０．３１０．１０１
０・・・送話器、２１１．３１１．１０１１・・・受話
器。FIG. 1 is a block diagram of an embodiment of the present invention. FIG. 2 is a block diagram of a conventional example. 21.31.111.121... Overhead insertion section, 22.32.112.122... Overhead separation section, 23.33.103.113.123... Encoding section, 24.34.104. 114.124...Decoding unit, 105.106.107...Selector, 109.
118.128... Adder, 210.310.101
0...Telephone receiver, 211.311.1011...Telephone receiver.
Claims (1)
のディジタル伝送路に挿入され、上記一方の端間から到
来する信号からオーバヘッド信号を抽出する第一オーバ
ヘッド分離部と、上記他方の端間から到来する信号から
オーバヘッド信号を抽出する第二オーバヘッド分離部と
、上記第一オーバヘッド分離部を経由し、上記他方の端
間に伝送される信号にオーバヘッド信号を付加する第一
オーバヘッド挿入部と、 上記第二オーバヘッド分離部を経由し、上記一方の端局
に伝送される信号にオーバヘッド信号を付加する第二オ
ーバヘッド挿入部と、 送信音声信号を生成する送話器と、 受信音声信号を再生する受話器と を備えた中間中継装置において、 上記第一オーバヘッド分離部で抽出されたオーバヘッド
信号を音声信号に変換する第一復号化部と、 上記第二オーバヘッド分離部で抽出されたオーバヘッド
部を音声信号に変換する第二復号化部と、上記送話器で
生成された送信音声信号とこの第一復号化部で変換され
た音声信号との和を求める第一加算器と、 この第一加算器で求まる和の音声信号を相当のオーバヘ
ッド信号に変換し、このオーバヘッド信号を上記第一オ
ーバヘッド挿入部で付加されるオーバヘッド信号とする
第一符号化部と、 上記送話器で生成された送信音声信号とこの第二復号化
部で変換された音声信号との和を求める第二加算器と、 この第二加算器で求まる和の音声信号を相当のオーバヘ
ッド信号に変換し、このオーバヘッド信号を上記第二オ
ーバヘッド挿入部で付加されるオーバヘッド信号とする
第二符号化部と を備えたことを特徴とする中間中継装置。 ２、上記第一復号化部で変換された音声信号と上記第二
復号化部で変換された音声信号と和を求め、この和の音
声信号を上記受話器に与える第三加算器を備えた請求項
１記載の中間中継装置。[Claims] 1. A channel that is inserted into a digital transmission path between one end and the other end opposite to this end, and extracts an overhead signal from a signal arriving from the one end. a second overhead separation section that extracts an overhead signal from a signal arriving from the other end, and an overhead separation section for the signal transmitted between the other end via the first overhead separation section; a first overhead insertion section that adds a signal; a second overhead insertion section that adds an overhead signal to a signal transmitted to the one terminal station via the second overhead separation section; and a second overhead insertion section that generates a transmission audio signal. In an intermediate relay device including a transmitter and a receiver that reproduces a received audio signal, the first decoding unit converts the overhead signal extracted by the first overhead separation unit into an audio signal, and the second overhead a second decoding unit that converts the overhead part extracted by the separation unit into an audio signal; and calculating the sum of the transmitted audio signal generated by the transmitter and the audio signal converted by the first decoding unit. a first adder; and a first encoder that converts the summed audio signal obtained by the first adder into a corresponding overhead signal and uses this overhead signal as an overhead signal added by the first overhead insertion section. , a second adder that calculates the sum of the transmitted audio signal generated by the transmitter and the audio signal converted by the second decoding section; An intermediate relay device comprising: a second encoding unit that converts the overhead signal into an overhead signal and uses the overhead signal as an overhead signal added by the second overhead insertion unit. 2. Claim comprising a third adder that calculates the sum of the audio signal converted by the first decoding unit and the audio signal converted by the second decoding unit, and supplies the summed audio signal to the receiver. The intermediate relay device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28622990A JPH04159833A (en) | 1990-10-23 | 1990-10-23 | Intermediate repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28622990A JPH04159833A (en) | 1990-10-23 | 1990-10-23 | Intermediate repeater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04159833A true JPH04159833A (en) | 1992-06-03 |
Family
ID=17701643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28622990A Pending JPH04159833A (en) | 1990-10-23 | 1990-10-23 | Intermediate repeater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04159833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007306079A (en) * | 2006-05-09 | 2007-11-22 | Nec Corp | Orderwire transmission apparatus |
-
1990
- 1990-10-23 JP JP28622990A patent/JPH04159833A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007306079A (en) * | 2006-05-09 | 2007-11-22 | Nec Corp | Orderwire transmission apparatus |
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