JP2005191881A - VoIP SYSTEM AND VoIP TELEPHONE SET - Google Patents

VoIP SYSTEM AND VoIP TELEPHONE SET Download PDF

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JP2005191881A
JP2005191881A JP2003430157A JP2003430157A JP2005191881A JP 2005191881 A JP2005191881 A JP 2005191881A JP 2003430157 A JP2003430157 A JP 2003430157A JP 2003430157 A JP2003430157 A JP 2003430157A JP 2005191881 A JP2005191881 A JP 2005191881A
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hold
telephone
sip
sip telephone
line
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JP4017592B2 (en
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輝幸 ▲頼▼田
Teruyuki Yorita
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Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
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Tokyo Sanyo Electric Co Ltd
Tottori Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a VoIP system provided with SIP telephone sets capable of receiving holding cancellation without disconnecting a line put on hold even during communication on a line other than the line put on hold. <P>SOLUTION: In the VoIP system, the SIP telephone sets a18 to e22 and f25 to j29 adaptive to multiple lines to which a plurality of telephone numbers are allocated are connected through a network 13. In the case that the holding cancellation is requested from the SIP telephone set a18 on a holding side to the SIP telephone set f25 using the line other than the telephone number put on hold in the state of being put on hold, the SIP telephone set f25 on the side of being put on hold receives the holding cancellation request, then inversely sends a holding request to the SIP telephone set a18 on the holding side and puts it on hold. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、VoIPシステム及びそれを構成するVoIP電話機に関するものである。   The present invention relates to a VoIP system and a VoIP telephone constituting the VoIP system.

現在、VoIP(Voice over Internet Protocol)システム(非特許文献1参照)、所謂インターネット電話が普及しつつある。このVoIPシステムの代表的な呼制御プロトコルとしてSIP(Session Initiation Protocol)がある。   Currently, a VoIP (Voice over Internet Protocol) system (see Non-Patent Document 1), a so-called Internet telephone, is becoming widespread. As a typical call control protocol of this VoIP system, there is SIP (Session Initiation Protocol).

SIPはインターネット仕様をベースにしており、例えば、相手を指定するのに電話番号の他にURI(Universal Resource Identifier)が使えたり、呼制御のやり取りをWebアクセスと同様のリクエスト−レスポンス型で行うなど、既存のインターネット技術を上手く活用している。相手を呼び出すときにはSIP電話機とSIPサーバの間だけで確認作業を行い、完了すればすぐ通話できるようになる。   SIP is based on the Internet specifications. For example, a URI (Universal Resource Identifier) can be used in addition to a telephone number to specify a partner, and a call control exchange is performed in a request-response manner similar to Web access. , Make good use of existing Internet technologies. When calling the other party, the confirmation work is performed only between the SIP telephone and the SIP server.

そして保留時には、通話中に保留することを意味するINVITEを相手方に送り、通話を保留する。これにより、アナログ電話と異なり、保留された側(相手方)は保留されたことを確認して被保留状態になり、保留を実現している。   At the time of holding, an INVITE indicating that the call is put on hold is sent to the other party, and the call is put on hold. Thus, unlike an analog telephone, the held side (the other party) confirms that the call has been put on hold and enters a held state, thereby realizing the hold.

一方、保留を解除する場合は、保留解除を意味するINVITEを相手方におくり、通話を復旧させる。   On the other hand, when canceling the hold, an INVITE signifying the release of the hold is sent to the other party to restore the call.

また特許文献1には、保留時に被保留者側の回線が独占されることを防ぐ回線保留方式が開示されている。具体的には、端末とサーバとの通信中に端末から保留要求が送出された場合、交換手段に設けられた切替手段によって、端末と接続された第2の仮想回線が保留状態に設定され、また、サーバに設けられた制御手段によって、端末と接続されている第2の仮想回線と接続された実回線が開放される。   Patent Document 1 discloses a line hold system that prevents the line on the holdee side from being monopolized during hold. Specifically, when a hold request is sent from the terminal during communication between the terminal and the server, the second virtual circuit connected to the terminal is set to the hold state by the switching means provided in the exchange means, Further, the real line connected to the second virtual line connected to the terminal is released by the control means provided in the server.

その後、端末から保留解除要求が送出された場合、切替手段によって、端末と接続された第2の仮想回線が使用状態に設定され、また、制御手段によって、端末と接続された第2の仮想回線と第1の仮想回線とが実回線を介して接続される。
特開平10−304061号公報 日経NETWORK (2002.6 p.51-p.69)
Thereafter, when a hold release request is sent from the terminal, the second virtual line connected to the terminal is set to the use state by the switching means, and the second virtual line connected to the terminal is set by the control means. And the first virtual line are connected via a real line.
Japanese Patent Laid-Open No. 10-304061 Nikkei NETWORK (2002.6 p.51-p.69)

しかしながら、複数の電話番号を割り当てて使用するマルチライン対応のSIP電話機の場合、相手方から保留されて被保留状態になった後、保留されている番号以外のラインに着信、又は保留されている番号以外のラインから発信するなどして、保留されているライン以外を使用中に、被保留ラインが相手方により、保留解除の要求がされた場合、別ラインで通話中であるために、保留解除を受け付けて通話を復旧させることができない。そこで、保留を継続する為に相手方に保留要求を拒否する信号を送信する方法が考えられるが、そうすると、SIPではその対応が規定されていない為に、保留解除要求を受信したときの相手方の動作が予測できず、相手方の動作によってはエラーを返して切断してしまうことがあるという問題があった。   However, in the case of a SIP phone that supports multiple lines by assigning a plurality of telephone numbers, the number that is received or held on a line other than the held number after being put on hold by the other party If the other party requests a hold release while the other party is using a line other than the line on hold, such as calling from a line other than The call cannot be restored after being accepted. Therefore, in order to continue the hold, a method of sending a signal rejecting the hold request to the other party can be considered. However, since the correspondence is not prescribed in SIP, the other party's operation when the hold release request is received However, depending on the other party's action, there was a problem that an error was returned and the user was disconnected.

上記の問題点に鑑み、本発明は、保留されているライン以外で通話中であっても被保留ラインを切断することなく保留解除を受け付けることができるVoIP電話機を提供することを目的とする。また該VoIP電話機を用いたVoIPシステムを提供することも目的とする。   In view of the above problems, an object of the present invention is to provide a VoIP telephone that can accept a hold release without disconnecting the held line even when a call is being made on a line other than the held line. It is another object of the present invention to provide a VoIP system using the VoIP telephone.

上記目的を達成するために本発明は、複数の電話番号が割り当てられたマルチライン対応のVoIP電話機が、ネットワークを介して接続されるVoIPシステムであって、被保留状態で、保留されている電話番号以外のラインを使用中の電話機に、保留側の電話機から保留解除要求があった場合、被保留側の電話機は、保留解除要求を受け付けた後、前記保留側の電話機に逆に保留要求を送って保留することを特徴とするものである。   In order to achieve the above object, the present invention provides a VoIP system in which a multi-line VoIP telephone to which a plurality of telephone numbers are assigned is connected via a network, and a telephone that is held in a held state. If a phone that is using a line other than the number receives a hold release request from the hold-side phone, the hold-side phone accepts the hold release request, and then reversely sends a hold request to the hold-side phone. It is characterized by being sent and put on hold.

また本発明は、複数の電話番号が割り当てられたマルチライン対応のVoIP電話機であって、被保留状態で、保留されている電話番号以外のラインを使用中に、保留解除要求があった場合、該保留解除要求を受け付けた後、逆に保留要求を送って保留することを特徴とするものである。   Further, the present invention is a multi-line compatible VoIP telephone to which a plurality of telephone numbers are assigned, and when there is a hold release request while using a line other than the telephone number being held in a held state, On the contrary, after receiving the hold release request, a hold request is sent and held.

これらの構成によると、見かけ上、通話は保留されたままである。しかし実際は、被保留側の電話機が、一旦保留側電話機からの保留解除を受け付けた後、逆に保留要求しているので、保留側と被保留側とが入れ替わる。   According to these configurations, the call remains apparently on hold. However, in reality, the hold-side telephone once receives a hold release from the hold-side telephone and then makes a hold request, so the hold side and the hold side are switched.

本発明によれば、保留側電話機の保留解除要求が拒否されることがないので、保留状態の通話が切断されない。また、保留解除を受け付けて逆に保留する動作時に、被保留側電話機では操作不要であるため、ユーザの負担が増すことはない。   According to the present invention, since the hold release request of the hold-side telephone is not rejected, the call on hold is not disconnected. Further, during the operation of accepting the release of hold and holding it in reverse, no operation is required on the held-side telephone, so that the burden on the user is not increased.

図1は、VoIPシステムの構成を示すブロック図である。VoIPシステム10は、本社と支店の関係のような社内LAN11、12と、社内LAN11、12間を接続するネットワーク13と、社内LAN11、12に様々なサービスを提供するSIPサーバの一つである第1及び第2のプロキシサーバ14、15とから構成される。   FIG. 1 is a block diagram showing the configuration of the VoIP system. The VoIP system 10 is one of SIP servers that provide various services to the in-house LANs 11 and 12, the in-house LANs 11 and 12 such as the relationship between the head office and the branch, the network 13 that connects the in-house LANs 11 and 12, and 1 and second proxy servers 14 and 15.

上記の社内LAN11、12間は、例えばVPN(Virtual Private Network)を用いることができる。   For example, a VPN (Virtual Private Network) can be used between the in-house LANs 11 and 12.

社内LAN11は、ネットワーク13に接続されるNAT17と、NAT17に接続され、複数の電話番号が割り当てられたマルチライン対応のSIP電話機a18〜e22とを備え、同様に社内LAN12は、NAT24と、SIP電話機f25〜j29とを備える。   The in-house LAN 11 includes a NAT 17 connected to the network 13 and multi-line compatible SIP telephones a18 to e22 connected to the NAT 17 and assigned with a plurality of telephone numbers. Similarly, the in-house LAN 12 includes the NAT 24 and the SIP telephone. f25 to j29.

また、NAT17はグローバルIPアドレスと内部で使用しているプライベートIPアドレスを変換する機能を有し、ルータやファイアウォールソフトウェア等でサポートすることができる。   The NAT 17 has a function of converting a global IP address and a private IP address used internally, and can be supported by a router, firewall software, or the like.

なお、第1のプロキシサーバ14に障害があって繋がらない場合は第2のプロキシサーバ15に接続される。以下の動作説明においては、説明の簡略化のためプロキシサーバの動作を省略している。また、各SIP電話機のCall IDが判れば、プロキシサーバは必ずしも必要ではない。   If the first proxy server 14 is faulty and cannot be connected, the second proxy server 15 is connected. In the following description of the operation, the operation of the proxy server is omitted for the sake of simplicity. Further, if the Call ID of each SIP telephone is known, a proxy server is not always necessary.

図2は、VoIPシステム10の動作を示すシーケンス図である。呼の確立手順はインターネットで一般的なDNSに似た手法を使う。例えば、SIP電話機a18からSIP電話機f25に電話をかける場合、まず、SIP電話機a18が「INVITE」メッセージをSIP電話機f25に送り、接続を要求する。これにSIP電話機f25が「100 Trying」、「180 Ringing」、「200 OK」メッセージを返し、このメッセージに対するACK(acknowledgement)をSIP電話機a18が返答すれば、通話が始まる。   FIG. 2 is a sequence diagram showing the operation of the VoIP system 10. The call establishment procedure uses a technique similar to DNS, which is common on the Internet. For example, when making a call from the SIP telephone a18 to the SIP telephone f25, first, the SIP telephone a18 sends an “INVITE” message to the SIP telephone f25 to request connection. In response, the SIP telephone f25 returns “100 Trying”, “180 Ringing”, and “200 OK” messages, and the SIP telephone a18 responds with an ACK (acknowledgement) in response to this message, so that the call starts.

通話中に、SIP電話機a18の保留ボタン(不図示)が押下されると、SIP電話機a18が「INVITE(Hold)」メッセージをSIP電話機f25に送り、保留を要求する。これにSIP電話機f25が「200 OK」メッセージを返すと、通話が保留される。ここで、保留を要求したSIP電話機a18を保留側、保留されたSIP電話機f25を被保留側と呼ぶ。   When a hold button (not shown) of the SIP telephone a18 is pressed during a call, the SIP telephone a18 sends an “INVITE (Hold)” message to the SIP telephone f25 to request the hold. If the SIP telephone f25 returns a “200 OK” message, the call is put on hold. Here, the SIP telephone a18 that requested the hold is called the hold side, and the held SIP telephone f25 is called the hold side.

このような被保留状態のSIP電話機f25に、SIP電話機j29から「INVITE」メッセージが送られてくる、つまり呼の接続要求があると、本VoIPシステム10はマルチライン対応なので、SIP電話機f25は「100 Trying」、「180 Ringing」、「200 OK」メッセージを返し、通話を許可する。これにSIP電話機j29がACKを返せば、呼が確立して通話状態となる。   When an “INVITE” message is sent from the SIP telephone j29 to the SIP telephone f25 in such a held state, that is, when there is a call connection request, since the VoIP system 10 is multiline compatible, the SIP telephone f25 “100 Trying”, “180 Ringing”, and “200 OK” messages are returned to allow the call. If the SIP telephone j29 returns ACK to this, the call is established and a call state is established.

このようにSIP電話機f25は、SIP電話機a18との通話を保留されたまま、SIP電話機j29と通話できる。この状態でSIP電話機a18の保留解除ボタン(保留ボタンと共通)が押下されると、SIP電話機a18が「INVITE(保留解除)」メッセージをSIP電話機f25に送り、保留解除を要求する。これに応答して、SIP電話機f25は「200 OK」メッセージを返し、保留解除要求を受け付ける。続けてSIP電話機f25は「INVITE(Hold)」メッセージをSIP電話機a18に送り、保留を要求する。これにSIP電話機a18が「200 OK」メッセージを返すと、見かけ上、通話は保留されたままである。   In this way, the SIP telephone f25 can make a call with the SIP telephone j29 while the call with the SIP telephone a18 is put on hold. In this state, when the hold release button (common to the hold button) of the SIP telephone a18 is pressed, the SIP telephone a18 sends an “INVITE (hold release)” message to the SIP telephone f25 to request release of the hold. In response to this, the SIP telephone f25 returns a “200 OK” message and accepts the hold release request. Subsequently, the SIP telephone set f25 sends an “INVITE (Hold)” message to the SIP telephone set a18 to request a hold. If the SIP telephone a18 returns a “200 OK” message to this, the call is apparently put on hold.

実際は、SIP電話機f25が、一旦SIP電話機a18からの保留解除を受け付けた後、逆にSIP電話機a18へ保留要求しているので、SIP電話機f25が保留側、SIP電話機a18が被保留側となる。   Actually, after the SIP telephone f25 once accepts the hold release from the SIP telephone a18, the SIP telephone f25 makes a hold request to the SIP telephone a18. Therefore, the SIP telephone f25 becomes the holding side and the SIP telephone a18 becomes the held side.

このように、SIP電話機a18の保留解除要求が拒否されることがないので、SIP電話機a18とSIP電話機f25間の通話が切断されない。また、保留解除を受け付けて逆に保留する動作時に、SIP電話機f25側では操作不要であるため、ユーザの負担が増すことはない。   As described above, since the hold release request of the SIP telephone a18 is not rejected, the call between the SIP telephone a18 and the SIP telephone f25 is not disconnected. In addition, during the operation of accepting the hold release and holding the reverse, no operation is required on the SIP telephone f25 side, so that the burden on the user is not increased.

その後、SIP電話機f25とSIP電話機j29との通話が終了し、SIP電話機f25の保留解除ボタン(保留ボタンと共通)が押下されると、SIP電話機f25とSIP電話機a18間の保留が解除される。   Thereafter, when the call between the SIP telephone f25 and the SIP telephone j29 is finished and the hold release button (common with the hold button) of the SIP telephone f25 is pressed, the hold between the SIP telephone f25 and the SIP telephone a18 is released.

本発明のVoIPシステムの端末としては、マルチライン対応のVoIP電話機が用いられ、VoIP電話機としては、SIP電話機等を利用することができる。   As a terminal of the VoIP system of the present invention, a multi-line compatible VoIP telephone is used, and a SIP telephone or the like can be used as the VoIP telephone.

VoIPシステムの構成を示すブロック図である。It is a block diagram which shows the structure of a VoIP system. VoIPシステムの動作を示すシーケンス図である。It is a sequence diagram which shows operation | movement of a VoIP system.

符号の説明Explanation of symbols

10 VoIPシステム
11、12 社内LAN
13 ネットワーク
17、24 NAT
18〜22、25〜29 SIP電話機
10 VoIP system 11, 12 In-house LAN
13 Network 17, 24 NAT
18-22, 25-29 SIP telephone

Claims (2)

複数の電話番号が割り当てられたマルチライン対応のVoIP電話機が、ネットワークを介して接続されるVoIPシステムであって、
被保留状態で、保留されている電話番号以外のラインを使用中の電話機に、保留側の電話機から保留解除要求があった場合、
被保留側の電話機は、保留解除要求を受け付けた後、前記保留側の電話機に逆に保留要求を送って保留することを特徴とするVoIPシステム。
A VoIP system in which multi-line compatible VoIP telephones to which a plurality of telephone numbers are assigned is connected via a network,
If the phone on hold uses a line other than the phone number on hold and there is a hold release request from the phone on hold,
The held-side telephone, after accepting the hold-release request, sends a hold request to the hold-side telephone and holds it on the contrary.
複数の電話番号が割り当てられたマルチライン対応のVoIP電話機であって、
被保留状態で、保留されている電話番号以外のラインを使用中に、保留解除要求があった場合、
該保留解除要求を受け付けた後、逆に保留要求を送って保留することを特徴とするVoIP電話機。
A multi-line VoIP phone with a plurality of telephone numbers assigned,
If there is a hold release request while using a line other than the phone number that is on hold in the held state,
A VoIP telephone characterized in that, after accepting the hold release request, a hold request is sent and held on the contrary.
JP2003430157A 2003-12-25 2003-12-25 VoIP system and VoIP telephone Expired - Fee Related JP4017592B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008166941A (en) * 2006-12-27 2008-07-17 Sanyo Electric Co Ltd Multi-line telephone set
JPWO2006100751A1 (en) * 2005-03-22 2008-08-28 富士通株式会社 Telephone equipment
GB2454298A (en) * 2007-11-05 2009-05-06 Avaya Inc Handling, by a call centre a Session Initiation Protocol (SIP) Capable Telecommunications Terminal that is Put on Hold
US8223674B2 (en) 2007-06-28 2012-07-17 Fuji Electric Co., Ltd. Signal relay device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2006100751A1 (en) * 2005-03-22 2008-08-28 富士通株式会社 Telephone equipment
JP4522449B2 (en) * 2005-03-22 2010-08-11 富士通株式会社 Telephone equipment
JP2008166941A (en) * 2006-12-27 2008-07-17 Sanyo Electric Co Ltd Multi-line telephone set
US8223674B2 (en) 2007-06-28 2012-07-17 Fuji Electric Co., Ltd. Signal relay device
GB2454298A (en) * 2007-11-05 2009-05-06 Avaya Inc Handling, by a call centre a Session Initiation Protocol (SIP) Capable Telecommunications Terminal that is Put on Hold
GB2454298B (en) * 2007-11-05 2011-10-12 Avaya Inc Handling of a session initiation protocol-capable telecommunications terminal that is put on hold
US8437464B2 (en) 2007-11-05 2013-05-07 Avaya, Inc. Handling of a session initiation protocol-capable telecommunications terminal that is put on hold

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