JP2004080483A - Adapter for voice over an internet protocol - Google Patents
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Abstract
Description
【0001】
【発明の属する技術分野】
この発明は公衆電話網に接続される電話網用インタフェースと、インターネットに接続されるインターネット用インタフェースとを具備し、電話機を電話網でもインターネット網へも接続して通話を可能とするVoIP用アダプタに関する。
【0002】
【従来の技術】
最近の傾向としてインターネットを利用した通話方法(VoIP)が普及しつつある。図2に従来から用いられているVoIP用アダプタの構成を示す。図中1はVoIP用アダプタ、30はスプリッタ、40は電話回線、50は電話機、51はパーソナルコンピュータのようなデータ用端末を示す。
電話回線40は電話局60に接続され、電話局60で交換機等を通じて電話網70に接続される。更に電話局60にはルータ等と呼ばれている接続器61が用意され、この接続器61を通じて電話回線40はプロバイダと呼ばれる接続業者が設置したサーバ80に接続され、サーバ80を介してインターネット90に接続される。
【0003】
スプリッタ30は電話網用端子31とインターネット用端子32とを有し、電話網用端子31には電話網用の帯域F1(図3参照)の信号を分岐して出力する。また、インターネット用端子32には図3に示すインターネット用の帯域F2の信号を分岐して入出力する。
VoIP用アダプタ1は電話網用インタフェース2とインターネット用インタフェース3とを有し、電話網用インタフェース2はスプリッタ30の電話網用端子31に接続され、インターネット用インタフェース3はスプリッタ30のインターネット用端子32に接続される。
【0004】
電話網用インタフェース2はセレクタ7と電話/VoIPと判定部8を通じて電話用インタフェース9に接続される。電話用インタフェース9には電話機50が接続される。
一方、インターネット用インタフェース3は通信処理部5を通じてデータ用インタフェース11に接続される。このデータ用インタフェース11にデータ用端末51が接続される。セレクタ7は電話端子7Aと、VoIP端子7Bとを有し、電話端子7Aに電話網用インタフェース2が接続される。VoIP端子7BにはVoIP処理部4が接続され、このVoIP処理部4を通じてVoIP端子7Bを通信処理部5に接続する。
【0005】
電話/VoIP判定部8は電話機50が発呼する電話番号を監視し、電話網70でなければ接続が不能な電話番号、例えば「110番」、「119番」、「117番」…等を検出し、この電話番号が発呼された場合はセレクタ制御部6にその検出信号を送給し、セレクタ制御部6によりセレクタ7を制御し、電話端子7Aを選択する状態に強制制御を行う。それ以外の番号の発呼に対してはセレクタ7はVoIP端子7Bを選択する状態に維持され、VoIP処理部4と通信処理部5を通じてVoIP利用による通話が可能な状態とされる。
尚、セレクタ制御部6はセレクタ7を電話端子7Aに接続する状態に制御した状態では発光表示素子10を点灯し、電話端子7Aを選択している状態にあることを表示する。また、停電時には無条件でセレクタ7は電話端子7Aを選択する状態に切り替えられ、電話局60からの給電により通話路を維持する。
【0006】
【発明が解決しようとする課題】
従来のVoIP用アダプタは停電時は強制的にセレクタ7を電話端子7A側に切り替え、電話網70を利用した発着信を可能としているが、電源が正常な状態で例えばインターネット90側のサーバ80とインターネット用インタフェース3との間の通信回線の不具合、或はVoIP用アダプタ1内に設けられたVoIP処理部4又は通信処理部5に不具合が発生すると、通話が全く不能な状態に陥る欠点がある。また、VoIP用アダプタは主にコンピュータによって構成され、VoIP用アダプタの機能の向上のために時々ソフトウェアを更新しなければならない場合がある。このような場合、ソフトウェアの書き換え中及び書き替え後の再起動時も通話が全く不能になる不都合が生じる。
この発明の目的は電源が正常にも係わらずインターネット側の通信回線の不具合、或はVoIP処理部4又は通信処理部5に不具合が発生した場合、及びソフトウェアの更新時、更にソフトウェアの更新後の再起動時でも電話の発着信を可能としたVoIP用アダプタを提供しようとするものである。
【0007】
【課題を解決するための手段】
この発明の請求項1では、電話網用の信号を入出力する電話網用インタフェースと、インターネット用信号を入出力するインターネット用インタフェースと、電話機を接続する電話用インタフェースと、データ用端末を接続するデータ用インタフェースと、電話機の接続先を電話網用インタフェースかインターネット用インタフェースかの何れかを選択するセレクタと、電話機が発呼する電話番号を照合し電話網専用番号であるか否かを判定する電話/VoIP判定部と、この電話/VoIP判定部が電話網専用番号であることを検出した場合及び停電を検出した場合はセレクタを電話用インタフェースを選択する状態に制御するセレクタ制御部と、セレクタがインターネット用インタフェースを選択した状態で電話機が発信する音声信号をVoIP用信号に変換処理し、インターネット用インタフェースから入力されるVoIP用信号を電話機用信号に変換処理するVoIP処理部と、これらの通信の制御を行う通信処理部とを具備して構成されるVoIP用アダプタにおいて、インターネット用インタフェース及びVoIP処理部及び通信処理部の動作状況をモニタし、インターネット側の通信路の障害を検出するモニタ監視部と、このモニタ監視部がインターネット側の通信路の障害を検出した場合、停電時と同様にセレクタを電話網利用の発着信可能な状態に切替るセレクタ制御部と、を設けたVoIP用アダプタを提案する。
【0008】
この発明の請求項2では、請求項1記載のVoIP用アダプタにおいて、インターネット側の通信回線の断時に、自動的に停電時と同様に電話網利用による発着信機能のみを有効にするVoIP用アダプタを提案する。
この発明の請求項3では、請求項1又は2記載のVoIP用アダプタの何れかにおいて、インターネット通信路側のインタフェース障害時に、自動的に停電時と同様に電話網利用による発着信機能のみを有効にするVoIP用アダプタを提案する。
この発明の請求項4では、請求項1乃至3記載のVoIP用アダプタの何れかにおいて、VoIP用アダプタ内のVoIP処理部又は通信処理部の何れか一方又は双方が動作不能時に、自動的に停電時と同様に電話網利用による発着信機能のみを有効にするVoIP用アダプタを提案する。
この発明の請求項5では、請求項1乃至4記載のVoIP用アダプタの何れかにおいて、VoIPアダプタを動作させるためのソフトウェアの書き替え後の再起動時に、自動的に停電時と同様に電話網利用による発着信機能のみを有効にするVoIP用アダプタを提案する。
【0009】
作用
この発明によるVoIP用アダプタによればインターネット側の通信回線の不具合及びVoIP用アダプタ内のVoIP処理部、通信処理部の不具合、ソフトウェアの書き換え中、或は書き替え後の再起動等によりVoIP利用の電話の発着信が不能な状況をモニタ監視部で検出し、その検出信号でセレクタ7を停電時と同様に強制的に電話端子側に切り替え、電話網を利用して発着信を可能とさせることができる。
従って、この発明によればインターネット側の通信回線のあらゆる不具合を検出し、電話網を利用した発着信を行える状況に切替るから、どのような状況に陥っても電話機による通話が可能な状況を得ることができる。
【0010】
【発明の実施の形態】
図1にこの発明によるVoIP用アダプタの一実施例を示す。図2と対応する部分には同一符号を付して示し、重複説明は省略するが、この発明ではモニタ監視部12を設ける。このモニタ監視部12は、
1、通信処理部5からの情報により通信処理部5が正常に動作しているか否かと、インターネット用インタフェース3からサーバ80までの間の回線が正常に接続されているか否かを判定する機能と、
2、VoIP処理部4が正常に動作しているか否かを検出する機能と、
3、VoIP利用の通話中であるか否かを検出する機能と、
4、書き替え許可手段14からの情報によりデータ用端末51がVoIPアダプタ1のソフトウェアの書き替えを実行中であるか否かと、書き替え後の再起動を実行中であるか否かを検出する機能とを具備する。
【0011】
通信処理部5からの情報により通信処理部5自身が正常に動作していない状態或はインターネット用インタフェース3を含めてサーバ80までの間の通信回線が正常に接続されていない状況がモニタ監視部12により検出された場合はその検出信号によりセレクタ制御部13は停電時と同様にセレクタ7を電話端子7A側に強制的に切り替え、電話機50が電話網70を利用して発着信が可能な状態に切り替える。このときセレクタ制御部13は発光表示素子10を点灯させ、電話網70を利用して通話が可能であることを表示する。
一方、モニタ監視部12はVoIP処理部4の動作状況を監視し、動作が正常でないことを検出した場合も、その検出信号によりセレクタ制御部13を停電時と同様にセレクタ7を電話端子7A側に切り替え、電話網70を利用して電話機50を発着信可能な状態に維持させる。この場合も発光表示素子10を点灯させ電話網70を利用して通話が可能であることを表示する。
【0012】
ところで、VoIP用アダプタ1は一般にマイクロコンピュータによって構成され、全体はソフトウェアによって動作している。このソフトウェアはVoIP用アダプタ1の機能の向上を目的として時々バージョンアップされる。このような場合、VoIPの運用会社は、例えばメール機能を利用して各データ用端末51にソフトウェアのダウンロードを行うことを促す通知を行う。
各ユーザはメールの指示に従って、バージョンアップされたソフトウェアをデータ用端末51にダウンロードし、そのダウンロードしたソフトウェアをVoIP用アダプタ1に書き込みを行う。ソフトウェアの書き替えの間及び書き替え後の再起動時はVoIPを利用した通話及び電話網70を利用した通話が行えない状況となる。
【0013】
このため、この発明ではソフトウェアの書き換え中及び書き替え後の再起動時もセレクタ7を停電時と同様に電話端子7A側に切り替え、電話網70を利用して発着信が可能な状態に維持させる。
ソフトウェアの書き替えに当たってはVoIP利用の通話中にソフトウェアの書き替えを実行すると、VoIP利用の通話が切断されてしまうため、この発明ではモニタ監視部12にVoIP利用の通話中であるか否かを判定する機能と、データ用インタフェース11に関連して書き替え許可手段14を設け、モニタ監視部12がVoIP利用時による通話中であることを検出している状態ではデータ用端末51に書き替えを禁止させる。モニタ監視部12がVoIP利用による通話中でないことを検出している状態ではデータ用端末51にソフトウェアの書き換えを許可すると共に、ソフトウェアの書き換え中はモニタ監視部12からセレクタ13に制御信号を与えて停電時と同様にセレクタ7を電話端子7Aに接続する状態に制御する
【0014】
更に、VoIP利用による通話中でないことを検出してソフトウェアの書き替え後の再起動を許可する場合も、モニタ監視部12は書き替え許可手段14からの情報に従って、セレクタ制御部13に制御信号を与え、停電時と同様にセレクタ7を電話端子7Aに接続する状態に制御し、電話網70を利用して発着信を行える状態に維持させる。
尚、上述ではこの発明をVoIP用アダプタとして単独で説明したが、ADSLモデム一体型のVoIP用アダプタ或は電話機一体型のVoIP用アダプタにも適用可能であることは容易に理解できよう。
【0015】
【発明の効果】
上述したように、この発明によればインターネット90への接続が不能な状況では停電時と同様にセレクタ7を電話端子7Aに切り替え、電話機50は電話網70を利用して発着信を行える状況に維持するから、インターネット側の通信路が不具合であったり、或はインターネット用インタフェース3、或は通信制御部5、VoIP処理部4等の何れかに不具合があっても、必ず電話網70を通じて通話を行うことができる。
また、ソフトウェアの書き換え中、或は書き替え後の再起動中も停電時と同様に電話網70を利用して発着信を行うことができる。
従って、あらゆる状況下であっても必ず通話路を確保することができるから、信頼性の高いVoIP用アダプタを提供することができる利点が得られる。
【図面の簡単な説明】
【図1】この発明の一実施例を説明するためのブロック図。
【図2】従来の技術を説明するためのブロック図。
【図3】電話網用信号の周波数帯域とインターネット用信号の周波数帯域を説明するためのグラフ。
【符号の説明】
1 VoIP用アダプタ 32 インターネット用端子
2 電話網用インタフェース 40 電話回線
3 インターネット用インタフェース 50 電話機
4 VoIP処理部 51 データ用端末
5 通信処理部 60 電話局
6,13 セレクタ制御部 61 接続器
7 セレクタ 70 電話網
30 スプリッタ 80 サーバ
31 電話網用端子 90 インターネット[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a VoIP adapter that includes a telephone network interface connected to a public telephone network and an Internet interface connected to the Internet, and enables a telephone to be connected to both the telephone network and the Internet network to make a call. .
[0002]
[Prior art]
As a recent tendency, a communication method using the Internet (VoIP) is becoming widespread. FIG. 2 shows the configuration of a conventional VoIP adapter. In the figure, 1 is a VoIP adapter, 30 is a splitter, 40 is a telephone line, 50 is a telephone, and 51 is a data terminal such as a personal computer.
The
[0003]
The
The VoIP adapter 1 has a
[0004]
The
On the other hand, the Internet interface 3 is connected to the
[0005]
The telephone / VoIP determination unit 8 monitors the telephone number called by the
When the selector control unit 6 controls the selector 7 to be connected to the
[0006]
[Problems to be solved by the invention]
The conventional VoIP adapter forcibly switches the selector 7 to the
An object of the present invention is to provide a case where a trouble occurs in a communication line on the Internet side or a trouble occurs in a VoIP processing unit 4 or a
[0007]
[Means for Solving the Problems]
According to claim 1 of the present invention, a telephone network interface for inputting / outputting a signal for a telephone network, an Internet interface for inputting / outputting an Internet signal, a telephone interface for connecting a telephone, and a data terminal are connected. A data interface, a selector for selecting one of a telephone network interface and an Internet interface as a connection destination of the telephone, and a telephone number called by the telephone are collated to determine whether or not the telephone network is a dedicated telephone network number. A telephone / VoIP judging unit, a selector control unit for controlling the selector to select a telephone interface when the telephone / VoIP judging unit detects that it is a telephone network dedicated number and when a power failure is detected, Sends an audio signal from the telephone with the Internet interface selected. A VoIP processing unit that converts a VoIP signal input from an Internet interface into a telephone signal and converts the VoIP signal into a telephone signal, and a communication processing unit that controls these communications. In the adapter, a monitor monitoring unit that monitors the operation status of the Internet interface, the VoIP processing unit, and the communication processing unit and detects a failure of the communication path on the Internet side, and the monitor monitoring unit detects a failure of the communication path on the Internet side. A VoIP adapter provided with a selector control unit that switches a selector to a state where transmission and reception using a telephone network is possible when a power failure is detected, as in the case of a power failure.
[0008]
According to a second aspect of the present invention, in the VoIP adapter according to the first aspect, when the communication line on the Internet side is cut off, the VoIP adapter automatically enables only a calling / receiving function using a telephone network as in the case of a power failure. Suggest.
According to a third aspect of the present invention, in any of the VoIP adapters according to the first or second aspect, when an interface failure occurs on the Internet communication path side, only the transmission / reception function using the telephone network is automatically enabled as in the case of a power failure. We propose a VoIP adapter.
According to a fourth aspect of the present invention, in any one of the VoIP adapters according to the first to third aspects, when one or both of the VoIP processing unit and the communication processing unit in the VoIP adapter are inoperable, a power failure is automatically performed. In the same manner as above, a VoIP adapter that enables only a calling / receiving function using a telephone network is proposed.
According to a fifth aspect of the present invention, in any one of the VoIP adapters according to the first to fourth aspects, when the software for operating the VoIP adapter is restarted after rewriting, the telephone network is automatically set in the same manner as at the time of a power failure. We propose a VoIP adapter that enables only the outgoing / incoming call function.
[0009]
Action <br/> VoIP processing unit in the failure and VoIP adapter communication line Internet side according to the VoIP adapter according to the present invention, the communication processing unit failure, in rewriting software, or write restart after replacement The monitor / monitoring unit detects a situation in which a call using VoIP cannot be made or received by the monitor, and forcibly switches the selector 7 to the telephone terminal side in the same manner as at the time of a power failure by using the detection signal, and makes and receives a call using the telephone network. Can be made possible.
Therefore, according to the present invention, any trouble in the communication line on the Internet side is detected, and the state is switched to a state in which a call can be made and received using the telephone network. Obtainable.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows an embodiment of a VoIP adapter according to the present invention. Components corresponding to those in FIG. 2 are denoted by the same reference numerals, and redundant description is omitted. However, in the present invention, a monitor monitoring unit 12 is provided. This monitor monitoring unit 12
1. a function of determining whether or not the
2. a function of detecting whether or not the VoIP processing unit 4 is operating normally;
3. a function of detecting whether or not a call using VoIP is in progress;
4. Based on the information from the rewriting permission means 14, it is detected whether the
[0011]
According to the information from the
On the other hand, the monitor monitoring unit 12 monitors the operation status of the VoIP processing unit 4 and, when it detects that the operation is not normal, causes the
[0012]
By the way, the VoIP adapter 1 is generally constituted by a microcomputer, and the whole is operated by software. This software is sometimes upgraded to improve the function of the VoIP adapter 1. In such a case, the VoIP operating company issues a notification urging the user to download software to each
Each user downloads the upgraded software to the
[0013]
For this reason, in the present invention, the selector 7 is switched to the
In rewriting software, if software rewriting is executed during a call using VoIP, the call using VoIP is disconnected. In the present invention, the monitor monitoring unit 12 determines whether or not a call using VoIP is in progress. A rewriting permission unit 14 is provided in association with the determination function and the
Further, also in the case where it is detected that the telephone call is not in use by using the VoIP and the restart after rewriting the software is permitted, the monitor monitoring unit 12 sends a control signal to the
Although the present invention has been described above as a VoIP adapter alone, it can be easily understood that the present invention is also applicable to an ADSL modem-integrated VoIP adapter or a telephone-integrated VoIP adapter.
[0015]
【The invention's effect】
As described above, according to the present invention, when connection to the
Also, during rewriting of software or during restart after rewriting, it is possible to make and receive calls using the
Therefore, a communication path can be always ensured even in any situation, and an advantage that a highly reliable VoIP adapter can be provided is obtained.
[Brief description of the drawings]
FIG. 1 is a block diagram for explaining an embodiment of the present invention.
FIG. 2 is a block diagram for explaining a conventional technique.
FIG. 3 is a graph for explaining a frequency band of a telephone network signal and a frequency band of an Internet signal.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1
Claims (5)
上記インターネット用インタフェース及び上記VoIP処理部及び通信処理部の動作状況をモニタし、インターネット側の通信路の障害を検出するモニタ監視部と、このモニタ監視部がインターネット側の通信路の障害を検出した場合、停電時と同様に上記セレクタを電話網利用の発着信可能な状態に切替るセレクタ制御部と、
を設けたことを特徴とするVoIP用アダプタ。A telephone network interface for inputting / outputting a signal for a telephone network, an Internet interface for inputting / outputting an Internet signal, a telephone interface for connecting a telephone, a data interface for connecting a data terminal, A selector for selecting one of a telephone network interface and an Internet interface as a connection destination; and a telephone / VoIP determining unit for collating a telephone number called by the telephone and determining whether or not the telephone number is a telephone network dedicated number. A selector control unit for controlling the selector to select a telephone interface when the telephone / VoIP determination unit detects that the telephone network is a dedicated number and a power failure; The voice signal transmitted by the above-mentioned telephone with Vo selected is Vo A VoIP processing unit for converting the VoIP signal inputted from the Internet interface into the telephone signal, and a communication processing unit for controlling these communications. In the VoIP adapter,
A monitor monitoring unit that monitors the operation status of the Internet interface and the VoIP processing unit and the communication processing unit, and detects a failure of a communication path on the Internet side, and the monitor monitoring unit detects a failure of the communication path on the Internet side. In the case, as in the case of a power outage, a selector control unit that switches the selector to a state in which it can make and receive calls using the telephone network,
A VoIP adapter characterized by comprising:
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JP2002239124A JP2004080483A (en) | 2002-08-20 | 2002-08-20 | Adapter for voice over an internet protocol |
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JP2002239124A JP2004080483A (en) | 2002-08-20 | 2002-08-20 | Adapter for voice over an internet protocol |
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JP2002239124A Pending JP2004080483A (en) | 2002-08-20 | 2002-08-20 | Adapter for voice over an internet protocol |
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