JPH07131538A - Conference telephone system - Google Patents
Conference telephone systemInfo
- Publication number
- JPH07131538A JPH07131538A JP27516893A JP27516893A JPH07131538A JP H07131538 A JPH07131538 A JP H07131538A JP 27516893 A JP27516893 A JP 27516893A JP 27516893 A JP27516893 A JP 27516893A JP H07131538 A JPH07131538 A JP H07131538A
- Authority
- JP
- Japan
- Prior art keywords
- conference
- terminal
- call
- participant
- registered
- 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.)
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、従来のアナログ又はデ
ィジタル交換機網に於いて会議電話を行なう際に、効率
良く会議が行なえる様、会議開催者及び会議参加者への
サービス向上に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improving services to a conference organizer and conference participants so that a conference can be held efficiently when a conference call is made in a conventional analog or digital exchange network. is there.
【0002】[0002]
【従来の技術】従来の会議電話方式は、特開昭56−1
23167号公報に記載のように、会議を開催する際に
会議開催者が会議参加者を一人ずつ呼び出すか、会議参
加者より着信呼が有った場合、会議を一時中断してその
会議参加者を参加させるものである。2. Description of the Related Art A conventional conference telephone system is disclosed in Japanese Patent Laid-Open No. 56-1
As described in Japanese Patent No. 23167, when a conference organizer calls conference participants one by one when holding a conference or when an incoming call is received from a conference participant, the conference is temporarily suspended and the conference participant is interrupted. To participate.
【0003】[0003]
【発明が解決しようとする課題】上記従来の会議電話方
式は、会議開催時刻に会議開催者が一人ずつ会議参加者
を呼び出す必要が有り、会議参加者を呼び出している
間、他の会議参加者は保留しなければならないという問
題と会議中に会議開催者へ他の会議参加者より着信呼が
あった場合に全ての会議参加者は、保留しなければなら
ないという問題があった。In the above-mentioned conventional conference telephone system, the conference organizer needs to call the conference participants one by one at the time when the conference is held. While the conference attendees are calling, other conference participants are called. There is a problem that all conference participants must be put on hold when there is an incoming call from the other conference participants to the conference organizer during the conference.
【0004】本発明の目的は会議開催の時刻になったら
会議開催者交換機より自動的に会議参加者を呼び出し
又、会議中に会議開催者に他の参加者より着信呼が来て
も会議参加者を待たせること無く接続出来る様にしてサ
ービス向上する会議電話方式を実現することである。An object of the present invention is to automatically call a conference participant from the conference organizer switch at the time when the conference is held, and to join the conference even if the conference organizer receives an incoming call from another participant. It is to realize a conference call system that improves the service by making it possible to connect without waiting for the person.
【0005】[0005]
【課題を解決するための手段】本発明は上記目的を達成
する為、会議開催者交換機に会議用トランク、加入者記
憶装置及び自動発信装置を設け、会議開催者端末に設け
られた加入者エントリーキーにて会議時刻及び会議参加
者を加入者記憶装置に登録し、登録時刻になると会議参
加者に対し加入者記憶装置の内容を自動発信装置で発信
するようにしたものである。In order to achieve the above object, the present invention provides a conference trunk, a conference trunk, a subscriber storage device and an automatic transmission device, and a subscriber entry provided in a conference host terminal. The key is used to register the conference time and the conference participant in the subscriber storage device, and at the registration time, the contents of the subscriber storage device are transmitted to the conference participant by the automatic transmission device.
【0006】又会議中、会議開催者へ着信呼があった場
合は、会議開催者交換機に交換機用登録者検出装置及び
登録者番号送出装置を設けて、該検出装置により着信呼
が加入者記憶装置に登録されているかを判断し、会議参
加者の場合、会議開催者端末に会議参加者に割り当てら
れたPB信号を登録者番号送出装置より端末用登録者検
出装置へ送出し、端末用登録者検出装置でPB信号に対
応した会議参加者番号に変換し、登録者番号表示装置で
表示する。この表示された会議参加者番号を会議開催者
端末の加入者エントリーキーにて会議に参加させるか参
加させないかを会議開催者で判断できるようにしたもの
である。When an incoming call is received by the conference organizer during the conference, the conference organizer exchange is provided with an exchange registrant detection device and a registrant number sending device, and the incoming call is memorized by the detection device by the subscriber. If it is a conference participant, the PB signal allocated to the conference participant terminal is transmitted from the registrant number transmission device to the terminal registrant detection device, and registered for the terminal. It is converted into a conference participant number corresponding to the PB signal by the person detecting device and displayed by the registrant number display device. The conference organizer can judge whether the displayed conference participant number is to participate in the conference or not by using the subscriber entry key of the conference organizer terminal.
【0007】[0007]
【作用】会議参加者を会議開催者端末から加入者エント
リーキーにて加入者記憶装置に会議開催時刻及び会議参
加者を登録することにより、自動発信装置にて会議開催
者及び会議参加者を呼び出せるので会議開催者が一人ず
つ呼び出すということが無く回線の保留時間を無くすこ
とができる。[Function] The conference organizer and the conference participant can be called by the automatic transmission device by registering the conference participant time and the conference participant in the subscriber storage device from the conference organizer terminal using the subscriber entry key. Therefore, the conference organizer does not call one by one, and the line hold time can be eliminated.
【0008】又、会議開催者から着信呼があったとき、
会議開催者端末の登録者番号表示装置に誰からの着信呼
であるかを表示するので、会議を中断すること無く参加
者を割込みさせることができる。When an incoming call is received from the conference organizer,
The registrant number display device of the conference organizer terminal displays who is the incoming call, so that the participants can be interrupted without interrupting the conference.
【0009】[0009]
【実施例】図1〜5は本発明による会議電話方式を実施
する際の構成図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 are block diagrams for implementing a conference call system according to the present invention.
【0010】会議用トランク101、自動発信装置10
2、加入者記憶装置103、交換機用登録者検出装置1
04、登録者番号送出装置105,106、話中音から
なる会議開催者交換機100、交換機200,300、
加入者エントリーキー11、端末用登録者検出装置1
2、登録者番号表示装置13からなる会議開催者端末1
0、端末20,30によって構成される。Conference trunk 101, automatic transmission device 10
2, subscriber storage device 103, switch registration person detection device 1
04, registrant number sending devices 105 and 106, conference organizer exchange 100 and exchanges 200 and 300, which are busy tones.
Subscriber entry key 11, terminal registrant detection device 1
2, conference organizer terminal 1 consisting of registrant number display device 13
0, terminals 20, 30.
【0011】−会議開催者発信の場合− 図1に示すように会議開催者側端末10の加入者エント
リーキー11より会議開催者交換機100の交換機用加
入者登録装置103に会議開催時間及び会議参加者番号
を図5に示すように#0112345670930#0
298765430930##と会議開催者交換機10
0の加入者記憶装置103に登録する。この時会議開催
者番号は加入者記憶装置103に自動的に登録される。
登録した会議開催時刻になると会議開催者交換機100
の自動発信装置102が加入者記憶装置103に記憶さ
れた図6の内容をよみ、この内容を基に会議開催者10
及び端末20,30へ発信する。会議開催者端末10
は、会議開催者交換機を経由し、会議用トランク101
へ接続される。端末20又は30は交換機200又は3
00を経由し会議開催者交換機100の制御により会議
用トランク101に接続され会議通信を行なう。この時
端末20が接続不可能なとき自動発信装置102より再
発信し会議用トランクを経由して接続する。-In the case of calling from the conference organizer-As shown in FIG. 1, the conference entry time 11 and the participation in the conference are entered from the subscriber entry key 11 of the conference organizer side terminal 10 to the exchange subscriber registration device 103 of the conference organizer exchange 100. As shown in FIG. 5, the person number is # 01123456670930 # 0.
298765430930 ## and conference host exchange 10
0 to the subscriber storage device 103. At this time, the conference organizer number is automatically registered in the subscriber storage device 103.
When the registered conference time comes, the conference switch 100
The automatic transmission device 102 of FIG. 6 reads the content of FIG. 6 stored in the subscriber storage device 103, and based on this content, the conference organizer 10
Also, the call is sent to the terminals 20 and 30. Conference organizer terminal 10
Is the conference trunk 101 via the conference organizer switch.
Connected to. The terminal 20 or 30 is an exchange 200 or 3
The communication is connected to the conference trunk 101 by way of the control of the conference organizer exchange 100 via 00 to perform conference communication. At this time, when the terminal 20 cannot be connected, the automatic transmission device 102 redistributes and connects via the conference trunk.
【0012】−会議開催者着信の場合− 図2に示すように、会議開催者側端末10の加入者エン
トリーキー11より会議開催者交換機100の加入者記
憶装置103に会議開催時刻及び会議参加者番号を図6
に示すように、例えば#0112345670930#
0298765430930##と会議開催者交換機1
00の加入者記憶装置103に登録する。この時会議開
催者番号は加入者記憶装置103に自動的に登録され
る。登録した会議開催時刻になると会議開催者交換機1
00の自動発信装置102が加入者記憶装置103に記
憶された図6の内容を読み、この内容を基に会議開催者
10及び端末20,30へ発信し会議開催とした後、会
議参加者が都合により一度会議を離れ再び会議に参加す
るために会議開催者へ発信する場合や、会議に関係のな
い一般の端末から発信があった場合に、この割込み信号
が図6にあるようにあらかじめ加入者記憶装置103に
記憶された内容であるかを交換機用登録者検出装置10
4にて読み取り、登録されている場合は会議接続し、登
録されていない場合は話中音を返し切断する。-In the case of an incoming call from the conference organizer-As shown in FIG. 2, the conference entry time and the conference participants are stored in the subscriber storage device 103 of the conference organizer exchange 100 from the subscriber entry key 11 of the conference organizer side terminal 10. Figure the numbers
As shown in, for example, # 0112345670930 #
0298765430930 ## and conference organizer switch 1
00 in the subscriber storage device 103. At this time, the conference organizer number is automatically registered in the subscriber storage device 103. Meeting organizer switch 1 at the registered meeting time
After the content of FIG. 6 stored in the subscriber storage device 103 is read by the automatic transmission device 102 of 00, the conference participants are sent to the conference organizer 10 and the terminals 20 and 30 based on the contents, and the conference participants For the sake of convenience, when an outgoing call is made to the meeting organizer to leave the meeting and join the meeting again, or when an outgoing call is made from a general terminal unrelated to the meeting, this interrupt signal is added in advance as shown in FIG. Whether or not the contents are stored in the person storage device 103
4, the conference connection is made when registered, and the busy tone is returned and disconnected when not registered.
【0013】−非会議参加者からの着信の場合− 図3に示すように端末20が会議開催者側交換機100
の加入者記憶装置103に会議参加者登録されていない
場合は、会議開催者端末10と端末20が会議用トラン
ク101にて会議中の時、割込み接続をしようとしても
交換機用登録者検出装置104にて接続不可と判断さ
れ、会議開催者交換機100の制御により話中音106
が端末20に送出され接続不可とする。-Incoming Call from Non-Conference Participant- As shown in FIG.
If the conference participant is not registered in the subscriber storage device 103 of the above, when the conference organizer terminal 10 and the terminal 20 are in a conference on the conference trunk 101, even if an attempt is made to make an interrupt connection, the exchange registered user detecting device 104 It is determined that connection is impossible and the busy tone 106 is controlled by the control of the conference switching system 100.
Is sent to the terminal 20 and the connection is disabled.
【0014】−会議参加者からの着信の場合(端末によ
る接続)− 図4に示すように、端末20が会議開催者側交換機10
0の加入者記憶装置103に会議参加登録されている場
合は、会議開催者端末1は端末20が割り付けられたP
B信号にて端末用登録者検出装置12へ通知する。この
PB信号を受けた端末用登録者検出装置12でPB信号
を該当する会議参加者番号へ変換して会議開催者端末1
0の登録者番号表示装置13に表示する。この表示の結
果、割り込んできた会議参加者を会議に参加させる場合
は、加入者エントリーキー10より例えば#01を入力
し会議開催者交換機100の制御により、会議用トラン
ク101を経由して会議接続を行なう。-Incoming Call from Conference Participant (Connection by Terminal) -As shown in FIG.
When the conference participation registration is registered in the subscriber storage device 103 of 0, the conference organizer terminal 1 is the P assigned to the terminal 20.
The terminal registrant detection device 12 is notified by the B signal. Upon receiving this PB signal, the terminal registrant detection device 12 converts the PB signal into a corresponding conference participant number, and the conference organizer terminal 1
It is displayed on the registrant number display device 13 of 0. As a result of this display, when the interrupted conference participant is to join the conference, for example, # 01 is entered from the subscriber entry key 10 and the conference organizer exchange 100 controls the conference connection via the conference trunk 101. Do.
【0015】−会議参加者からの着信の場合(端末によ
る接続拒否)− 図5に示すように、端末20が会議開催者側交換機10
0の加入者記憶装置103に会議参加登録されている場
合は、会議開催者端末10は端末20が割り付けられた
PB信号にて端末用登録者検出装置12へ通知する。こ
のPB信号を受けた端末用登録者検出装置12でPB信
号を該当する会議参加者番号へ変換して会議開催者端末
10の登録者番号表示装置13へ表示する。この表示の
結果、割り込んできた端末20を会議に参加させない場
合は、加入者エントリーキー10より例えば*01で会
議参加接続不可の旨を会議開催者交換機100に通知
し、交換機経由で会議参加者に話中音を送出する。-Incoming Call from Conference Participant (Connection Refusal by Terminal) -As shown in FIG.
When the conference participation registration is registered in the subscriber storage device 103 of 0, the conference organizer terminal 10 notifies the terminal registrant detection device 12 by the PB signal to which the terminal 20 is assigned. The terminal registrant detection device 12 that has received the PB signal converts the PB signal into the corresponding conference participant number and displays it on the registrant number display device 13 of the conference organizer terminal 10. If the interrupted terminal 20 is not allowed to participate in the conference as a result of this display, the conference organizer exchange 100 is notified by the subscriber entry key 10 that the conference participation connection is impossible, for example, * 01, and the conference participants are exchanged via the exchange. Send busy tone to.
【0016】図6は加入者記憶装置への記憶方法を示す
図である。FIG. 6 is a diagram showing a storage method in the subscriber storage device.
【0017】会議開催者端末の受話器が上がると、会議
開催交換機100にて発呼検出を行ないこれにより開催
者番号が自動的に記憶できる。次にそれぞれのPB信号
に割り付けるため会議参加者番号及び会議参加時刻を入
力する。入力方法は例えば図6にあるように、PB信号
1への割付けとして#01を入力し次に相手番号を入力
し最後に会議開催時刻を入力する。次の参加者をPB信
号2へ入力するときは、続けて#02、相手番号、会議
開催時刻を入力する。入力を終了するときは、##を入
力する。When the receiver of the conference organizer terminal goes up, the conference opening exchange 100 detects the call, and the organizer number can be automatically stored. Next, the conference participant number and the conference participation time are input to be assigned to each PB signal. As an input method, as shown in FIG. 6, for example, # 01 is input as an allocation to the PB signal 1, the partner number is input, and finally the conference holding time is input. When the next participant is input to PB signal 2, # 02, the other party's number, and the conference holding time are continuously input. To end the input, enter ##.
【0018】#0112345670930#0298
765430930##と加入者エントリーキー11よ
り入力することで会議参加者登録が出来る。また、この
登録内容をキャンセルするときは、加入者エントリーキ
ー11より#01**を入力することで登録内容がキャ
ンセル出来る。# 01123456670930 # 0298
The conference participant can be registered by inputting 7654309930 ## and the subscriber entry key 11. When canceling the registration contents, the registration contents can be canceled by inputting # 01 ** with the subscriber entry key 11.
【0019】[0019]
【発明の効果】本発明は、以上説明したように会議電話
による会議開催者からの発呼については、交換機に登録
した時刻に会議参加者へと自動的に発信するため会議開
催中の保留時間を無くすことが出来る。又、会議開催者
への着信呼があった場合は、会議参加者以外の場合は交
換機で話中音を返送するため会議を中断すること無く、
又、会議参加者の場合は、各会議参加者に割り当てられ
たPB信号により会議開催者の登録者番号表示装置に表
示し、加入者エントリーキーにて参加可否を相手に通知
するため会議を中断することが無くなる。As described above, according to the present invention, when a conference caller makes a call by a conference call, the call is automatically sent to the conference participants at the time registered in the exchange. Can be eliminated. Also, when there is an incoming call to the conference organizer, the caller returns the busy tone to the other parties than the conference participants without interrupting the conference.
Also, in the case of a conference participant, the conference is suspended in order to display it on the registration number display device of the conference organizer by the PB signal assigned to each conference participant, and to notify the other party of participation availability by the subscriber entry key. There is nothing to do.
【図1】本発明による開催者及び会議参加者への自動発
信する構成を示す図である。FIG. 1 is a diagram showing a configuration for automatically making a call to a host and conference participants according to the present invention.
【図2】本発明による会議中に会議参加者から割込みが
あった場合を示す構成図である。FIG. 2 is a configuration diagram showing a case where an interrupt is received from a conference participant during a conference according to the present invention.
【図3】本発明による会議中に会議参加者以外から割込
みがあった場合を示す構成図である。FIG. 3 is a configuration diagram showing a case where an interrupt is received from a person other than a conference participant during a conference according to the present invention.
【図4】本発明による会議中に会議参加者から割込みが
あった場合(接続の場合)を示す構成図である。FIG. 4 is a configuration diagram showing a case (interconnection) from a conference participant during a conference according to the present invention.
【図5】本発明による会議中に会議参加者から割込みが
あった場合(切断の場合)を示す構成図である。FIG. 5 is a configuration diagram showing a case (interruption) from a conference participant during a conference according to the present invention.
【図6】本発明による加入者記憶装置103の会議参加
者番号及び会議開催時刻のPB信号割付け図である。FIG. 6 is a PB signal allocation diagram of a conference participant number and a conference holding time of the subscriber storage device 103 according to the present invention.
【図7】本発明による開催者及び会議参加者への自動発
信する場合のシーケンス図である。FIG. 7 is a sequence diagram when an automatic call is made to the organizer and conference participants according to the present invention.
【図8】本発明による会議中に会議参加者以外から割込
みがあった場合のシーケンス図である。FIG. 8 is a sequence diagram in the case where there is an interruption from other than a conference participant during the conference according to the present invention.
【図9】本発明による会議中に会議参加者から割込みが
あった場合のシーケンス図である。FIG. 9 is a sequence diagram when a conference participant interrupts during a conference according to the present invention.
10…会議開催者端末、 11…加入者エントリーキー、 12…端末用登録者検出装置、 13…登録者番号表示装置、 20…端末、 30…端末、 100…会議開催者交換機、 101…会議用トランク、 102…自動発信装置、 103…加入者記憶装置、 104…交換機用登録者検出装置、 105…登録者番号送出装置、 106…話中音、 200…交換機、 300…交換機。 DESCRIPTION OF SYMBOLS 10 ... Conference organizer terminal, 11 ... Subscriber entry key, 12 ... Terminal registrant detection device, 13 ... Registrant number display device, 20 ... Terminal, 30 ... Terminal, 100 ... Conference organizer switch, 101 ... Conference Trunk, 102 ... Automatic transmission device, 103 ... Subscriber storage device, 104 ... Exchanger registrant detection device, 105 ... Registrant number sending device, 106 ... Busy tone, 200 ... Exchange device, 300 ... Exchange device.
Claims (5)
た通信網において会議電話を行なう際に、複数での電話
会議が可能な会議用トランク、会議参加者へ自動的に発
信する自動発信装置、会議参加者を記憶する加入者記憶
装置、会議中に割込み接続が入った場合その着信呼が登
録されているかを識別する交換機用登録者検出装置、該
検出装置で識別した信号を電話端末に送信する登録者番
号送出装置等で構成された交換機と、会議参加者を加入
者記憶装置に登録する加入者エントリーキーを用いて、
該交換機へ登録し、該交換機に登録された会議参加者情
報に基づき会議開催者及び会議参加者へ発信し、通話接
続可能な会議参加者を随時会議開催者と接続し通話接続
不可能な会議参加者に対しては、再度上記交換機から発
信することを特徴とする会議電話方式。1. When a conference call is made in a communication network composed of analog or digital exchanges, a conference trunk capable of making a conference call with a plurality of conferences, an automatic transmission device for automatically transmitting a conference participant, and a conference participation. Subscriber storage device for storing persons, switching device registrant detection device for identifying whether an incoming call is registered when an interrupt connection is entered during a conference, registration for transmitting a signal identified by the detection device to a telephone terminal Using an exchange composed of a person number sending device and the like, and a subscriber entry key for registering conference participants in the subscriber storage device,
A conference that is registered in the exchange and calls to the conference organizer and the conference participants based on the conference participant information registered in the exchange, and the conference participants who can connect the call are connected to the conference organizer at any time and the call cannot be established. A conference call system characterized by making a call again from the exchange to participants.
を識別する端末用登録者識別装置、登録加入者を表示す
る登録者番号表示装置を用いて、各会議参加者と会議を
行なうことを特徴とする会議電話方式。2. A conference is held with each conference participant according to claim 1, using a terminal registrant identifying device for identifying a conference participant on the terminal side and a registrant number display device for displaying a registered subscriber. Conference telephone system characterized by the following.
加者からの割込み又は一般からの割込みの接続可否を判
断する場合、該交換機の交換機用登録者検出装置にて会
議参加者であるかを判断し会議参加者であれば会議開催
者端末に会議参加者である旨を会議参加者に割り付けら
れたPB信号で通知し、未登録者であれば交換機より話
中音を相手に送出することを特徴とする会議電話方式。3. The method according to claim 1, wherein when it is determined whether or not an interrupt from a conference participant to the conference organizer or an interrupt from the general public can be connected, it is a conference participant in the exchange registrant detection device of the exchange. If it is a conference participant, the conference organizer terminal is notified to the conference organizer terminal by the PB signal assigned to the conference participant, and if not registered, the busy tone is sent from the exchange to the other party. A conference phone system characterized by:
の場合、上記交換機の登録者番号送出装置より会議参加
者に割り付けられたPB信号を通話中の会議主催者用端
末へ送出し、該端末装置に設けられた端末用登録者検出
装置にて該PB信号を会議参加者番号に変換して、登録
者番号表示装置へ送出し会議参加者番号を表示すること
を特徴とする会議電話方式。4. In the case of an incoming call from a conference participant according to claim 2, the PB signal assigned to the conference participant is transmitted from the registration number transmitting device of the exchange to the conference host terminal during the call, A conference telephone characterized in that the terminal registrant detection device provided in the terminal device converts the PB signal into a conference participant number and sends it to the registrant number display device to display the conference participant number. method.
の場合、端末に設けられた加入者エントリーキーによ
り、通話接続の可否を判断することを特徴とする会議電
話方式。5. The conference telephone system according to claim 4, wherein, when an incoming call is received from a conference participant, whether or not the call can be connected is determined by a subscriber entry key provided on the terminal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27516893A JPH07131538A (en) | 1993-11-04 | 1993-11-04 | Conference telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27516893A JPH07131538A (en) | 1993-11-04 | 1993-11-04 | Conference telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07131538A true JPH07131538A (en) | 1995-05-19 |
Family
ID=17551626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27516893A Pending JPH07131538A (en) | 1993-11-04 | 1993-11-04 | Conference telephone system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07131538A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10173782A (en) * | 1996-12-13 | 1998-06-26 | Nec Corp | Equipment, method for controlling communication and communication system |
US6668048B1 (en) | 1999-01-19 | 2003-12-23 | Nec Corporation | Conference communication system |
JP2008516519A (en) * | 2004-10-23 | 2008-05-15 | エルジー エレクトロニクス インコーポレイティド | PT system service reservation method |
JP2009232378A (en) * | 2008-03-25 | 2009-10-08 | Nec Infrontia Corp | Method, system, apparatus and program for convening conference with key telephone system using sip |
US9628631B2 (en) | 2014-03-17 | 2017-04-18 | Ricoh Company, Ltd. | Conference terminal control system, conference terminal control device, and conference terminal control method |
-
1993
- 1993-11-04 JP JP27516893A patent/JPH07131538A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10173782A (en) * | 1996-12-13 | 1998-06-26 | Nec Corp | Equipment, method for controlling communication and communication system |
US6668048B1 (en) | 1999-01-19 | 2003-12-23 | Nec Corporation | Conference communication system |
JP2008516519A (en) * | 2004-10-23 | 2008-05-15 | エルジー エレクトロニクス インコーポレイティド | PT system service reservation method |
JP4651674B2 (en) * | 2004-10-23 | 2011-03-16 | エルジー エレクトロニクス インコーポレイティド | PT system service reservation method |
JP2009232378A (en) * | 2008-03-25 | 2009-10-08 | Nec Infrontia Corp | Method, system, apparatus and program for convening conference with key telephone system using sip |
US9628631B2 (en) | 2014-03-17 | 2017-04-18 | Ricoh Company, Ltd. | Conference terminal control system, conference terminal control device, and conference terminal control method |
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