JPH03124145A - Packet exchange - Google Patents

Packet exchange

Info

Publication number
JPH03124145A
JPH03124145A JP1262077A JP26207789A JPH03124145A JP H03124145 A JPH03124145 A JP H03124145A JP 1262077 A JP1262077 A JP 1262077A JP 26207789 A JP26207789 A JP 26207789A JP H03124145 A JPH03124145 A JP H03124145A
Authority
JP
Japan
Prior art keywords
voice
packet
relay line
amplitude information
voice packet
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
JP1262077A
Other languages
Japanese (ja)
Inventor
Junichi Numakura
沼倉　準一
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 JP1262077A priority Critical patent/JPH03124145A/en
Publication of JPH03124145A publication Critical patent/JPH03124145A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To attain high quality when a relay line is idle and communication quality accordingly when a relay line is in congestion by providing voice amplitude information to a voice packet and sending the voice packet when the relay line is in congestion and the amplitude information of the voice is less than threshold level or below. CONSTITUTION:Voice information from a telephone set 1 is converted into a voice packet 4 by a voice packet processing 2. Then the voice packet 4 is sent to an opposite exchange via a packet bus 5, a relay line transmission reception circuit 6 and a relay line 8. When the relay line 8 is in congestion, voice packets 4a-4d are in standby in the relay line transmission reception circuit 6 Thus, a packet transmission circuit 9 reads the amplitude information 3b of the voice packet such as 4a to be sent next and when the level is the threshold level or below, the voice packet 4a is not sent but aborted and the similar processing is implemented to a succeeding voice packet 4b.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は音声をパケット化して交換するパケット交換
機に関し、特に音声パケットの無音制御を行なうパケッ
ト交換機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a packet switch that packetizes and exchanges voice, and particularly relates to a packet switch that performs silent control of voice packets.

〔従来の技術〕[Conventional technology]

従来、この種のパケット交換機は音声をパケット化する
際に、音声の振幅情報を判定し、その振幅情報がしきい
値以下のときにはパケット化しないものとなっていた。Conventionally, this type of packet switching equipment determines the amplitude information of the voice when packetizing the voice, and does not packetize the voice if the amplitude information is less than a threshold value.

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

上述した従来のパケット交換機は、音声の振幅情報がし
きい値以下のときにはパケット化しない無音制御を最初
から行なうため、伝送路が空状態であっても、しきい値
以下の音声はすてられる。The conventional packet switching equipment described above performs silent control from the beginning, not converting audio into packets when the amplitude information is less than the threshold, so even if the transmission path is empty, audio below the threshold is discarded. .

このため、通信品質が低下するという欠点がある。Therefore, there is a drawback that communication quality deteriorates.

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

この発明に係るパケット交換機は、音声パケットに音声
の振幅情報を設け、この音声の振幅情報を識別する手段
により、中継線が輻饋状態であり、かつこの音声の振幅
情報がしきい値以下のとき、この音声バケツ）１−送信
せず廃棄するようにしたものである。The packet switching device according to the present invention provides voice amplitude information in voice packets, and uses means for identifying this voice amplitude information to determine whether the trunk line is in a congested state and the voice amplitude information is below a threshold value. 1) This audio bucket is discarded without being transmitted.

〔作用〕[Effect]

この発明は中継線の輻輳状態に応じた通信品質を確保す
ることができる。The present invention can ensure communication quality according to the congestion state of trunk lines.

〔実施例〕〔Example〕

第１図はこの発明に係るパケット交換機の一実施例を示
すブロック図である。同図において、１は電話機、２は
この電話機１からの音声情報を第２図に示すようにヘッ
ダ３ｍ＋振幅情報３ｂおよび音声データ３ｃからなる音
声パケット４に変換して出力する音声パケット化回路、
５はパケットパス、６はその詳細なブロック図を第３図
に示す中継線送受信回路、７は中央制御回路、８は中継
線である。FIG. 1 is a block diagram showing an embodiment of a packet switch according to the present invention. In the figure, 1 is a telephone, and 2 is an audio packetization circuit that converts audio information from the telephone 1 into an audio packet 4 consisting of a header 3m + amplitude information 3b and audio data 3c as shown in FIG. 2, and outputs the same.
5 is a packet path, 6 is a trunk line transmission/reception circuit whose detailed block diagram is shown in FIG. 3, 7 is a central control circuit, and 8 is a trunk line.

なお、第３図に示す中継線送受信回路６において、４１
〜４ｄは音声パケ？ト、９はパケット送信回路である。In addition, in the trunk line transmitting/receiving circuit 6 shown in FIG.
~4d is an audio packet? 9 is a packet transmission circuit.

次に上記構成によるパケット交換機の動作について説明
する。まず、電話機１からの音声情報は音声パケット化
回路２によシ第２図に示す音声パケット４に変換される
。そして、この音声パケット４はパケットパス５．中継
線送受信回路６および中継線８を介して相手交換機へ伝
送される。ζこで、この中継線８が軽鎖状態となったと
き、音声パケット４瓢〜４ｄは第３図に示すように中継
線送受信回路６の中で待ち合わせ状態になる。このため
、パケット送信回路９は次に送るべき音声パケット例え
ば４ａの振幅情報３ｂを読み取ル、シきい値以下であれ
ばその音声バケツ）４ｍを送信せずに廃棄して次の音声
バケツ）　４ｂに対して同様な処理を行なうことになる
。Next, the operation of the packet switch with the above configuration will be explained. First, voice information from telephone 1 is converted by voice packetization circuit 2 into voice packets 4 shown in FIG. Then, this audio packet 4 is transferred to packet path 5. It is transmitted to the other party's exchange via the trunk line transmitting/receiving circuit 6 and the trunk line 8. ζNow, when this trunk line 8 is in a light chain state, the voice packets 4 to 4d are in a waiting state in the trunk transmission/reception circuit 6 as shown in FIG. Therefore, the packet transmission circuit 9 reads the amplitude information 3b of the next audio packet to be sent, for example, 4a, and if it is less than the threshold value, discards that audio packet without transmitting it and sends it to the next audio bucket) 4b. Similar processing will be performed for .

〔発明の効果〕〔Effect of the invention〕

以上詳細に説明したように、この発明に係るパケット交
換機によれば、中継線に伝送するときに中継線の輻麟状
態に応じて音声パケットをチエツクし、しきい値以下の
音声パケットを廃棄することにより、中継線が空状態の
ときには高品質になシ、中継線が軽鎖してきたときそれ
に応じた通信品質を提供できる効果がある。As explained in detail above, according to the packet switch according to the present invention, when transmitting to a trunk line, voice packets are checked according to the congestion state of the trunk line, and voice packets below a threshold value are discarded. This has the effect of providing high quality communication when the trunk line is empty, and providing commensurate communication quality when the trunk line is in a light chain.

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

第１図はこの発明に係るパケット交換機の一実施例を示
すブロック図、第２図は第１図の音声パケットの構成を
示す図、第３図は第１図の中継線送受信回路の詳細なブ
ロック図である。 １・・・・電話機、２・Φ・・音声パケット化回路、３
ａ・・・・ヘッダ、３ｂ・・・・振幅情報、３ｃ・・・
・音声データ、４・・舎・音声パケット、５・・・・パ
ケットパス、６・・・・中継線送受信回路、１・−・・
中央制御回路、８＠・・・中継線、９・・・・パケット
送信回路。 第１図FIG. 1 is a block diagram showing an embodiment of a packet switch according to the present invention, FIG. 2 is a diagram showing the configuration of the voice packet shown in FIG. 1, and FIG. 3 is a detailed diagram of the trunk line transmitting and receiving circuit shown in FIG. It is a block diagram. 1...Telephone, 2.Φ...Voice packetization circuit, 3
a...header, 3b...amplitude information, 3c...
・Audio data, 4・・Audio packet, 5・・Packet path, 6・・Relay line transmitting/receiving circuit, 1・・・・・
Central control circuit, 8@...relay line, 9...packet transmission circuit. Figure 1

Claims (1)

【特許請求の範囲】[Claims] 音声をパケット化して交換するパケット交換機において
、音声パケットに音声の振幅情報を設け、この音声の振
幅情報を識別する手段により、中継線が輻輳状態であり
、かつこの音声の振幅情報がしきい値以下のとき、この
音声パケットを送信せず廃棄することを特徴とするパケ
ット交換機。In a packet switch that packetizes and exchanges voice, voice amplitude information is provided in voice packets, and a means for identifying this voice amplitude information is used to determine whether a trunk line is in a congested state and this voice amplitude information is a threshold value. A packet switching device characterized in that the voice packet is discarded without being transmitted in the following cases.
JP1262077A 1989-10-09 1989-10-09 Packet exchange Pending JPH03124145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1262077A JPH03124145A (en) 1989-10-09 1989-10-09 Packet exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1262077A JPH03124145A (en) 1989-10-09 1989-10-09 Packet exchange

Publications (1)

Publication Number Publication Date
JPH03124145A true JPH03124145A (en) 1991-05-27

Family

ID=17370709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1262077A Pending JPH03124145A (en) 1989-10-09 1989-10-09 Packet exchange

Country Status (1)

Country Link
JP (1) JPH03124145A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08111683A (en) * 1994-10-13 1996-04-30 N T T Ido Tsushinmo Kk Silent cell abandoning communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08111683A (en) * 1994-10-13 1996-04-30 N T T Ido Tsushinmo Kk Silent cell abandoning communication system

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