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JP3776136B2 - Switching apparatus capable of reservation type call connection and method thereof - Google Patents
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JP3776136B2 - Switching apparatus capable of reservation type call connection and method thereof - Google Patents

Switching apparatus capable of reservation type call connection and method thereof Download PDF

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Publication number
JP3776136B2
JP3776136B2 JP11176093A JP11176093A JP3776136B2 JP 3776136 B2 JP3776136 B2 JP 3776136B2 JP 11176093 A JP11176093 A JP 11176093A JP 11176093 A JP11176093 A JP 11176093A JP 3776136 B2 JP3776136 B2 JP 3776136B2
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Japan
Prior art keywords
call connection
connection request
request signal
call
signal
Prior art date
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JP11176093A
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Japanese (ja)
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JPH06326776A (en
Inventor
秀浩 有満
克孝 藤田
晃 濱田
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NTT Inc
NTT Inc USA
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Nippon Telegraph and Telephone Corp
NTT Inc USA
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Description

【0001】
【産業上の利用分野】
本発明は、交換装置にコンピュータ処理を行って、交換装置の処理負荷を平滑化する方法と装置に関するものである。
【0002】
【従来の技術】
従来、呼接続処理は入り回線より到着する呼接続要求信号をもとに行われており、通信処理装置での処理は例えばパケット交換機では図3に示す手順で行われる。すなわち、
(1)入り回線から入力された信号フォーマットが該交換機で提供するプロトコルにそった正しいフォーマットであるかどうかを確認する(入力パケットのチェック)。
(2)(1)で入力された信号を送信したユーザー、または該信号を受取るユーザーの加入条件を確認し、加入していない場合には信号を廃棄する(加入条件のチェック)。
(3)交換装置に用意されている各種のサービスを実行する(各種サービスの実行)。
(4)着信相手番号から、発信側交換装置では中継線の番号を求め、着信側交換装置では加入者線収容位置等を求める(番号の翻訳)。
(5)出回線に出力するパケットを編集する(出力パケットの編集)。
(6)信号を出回線に出力する(パケットの出力)。
これらの処理は全て回線からの信号を受け取った後に行われていた。
【0003】
【発明が解決しようとする課題】
前記のように、従来の呼接続方法では入り回線からの呼接続要求信号を待って呼接続処理を行うため、交換装置の負荷は入り回線からの呼接続要求信号の数の影響を大きく受けており、要求数が一時的に大きくなった場合等には遅延時間の増大、輻輳等が引き起こされていた。
【0004】
本発明の目的は、上記の問題点を解決し、交換装置の負荷を平滑化することである。
【0005】
【課題を解決するための手段】
本発明の方法は、入り回線からの呼接続要求信号を通信処理装置で予測し、回線からの呼接続要求信号の受信以前に予め呼接続処理の準備を行っておくことを特徴とする。
【0006】
呼接続要求信号を予測する方法としては、例えば、呼接続を行うユーザーが呼接続要求信号の内容を予め通信処理装置に登録しておく方法、ユーザーからの前回の呼接続要求信号を通信処理装置内に記憶しておく方法などがある。
【0007】
呼接続要求信号を交換機で予測することにより、図3の処理手順においては、前回の呼接続要求信号を参照することによって少なくとも(1)から(5)までの処理を入り回線からの呼接続要求信号の到着前に行うことができる。
【0008】
【作用】
上記の予測処理を採用することにより、入り回線からの呼接続要求信号が短時間に集中した時点で行う必要がある処理量が極めて小さくなり、交換装置の負荷を平滑化することが可能になる。
【0009】
以下、図面を参照して本発明の実施例を詳細に説明する。
なお、本実施例ではX25パケット交換を例にとっているが、本方法は、その他、Q931 ,Q933 等の入り回線からの呼接続要求信号によって呼接続処理を行うプロトコル全てに対して有効である。
【0010】
【実施例】
図1により本発明の請求項1,2に対応する実施例を示す。
(a)例えば、予め加入時に呼接続要求信号を登録しておく方法、あるいは入り回線1からの前回の呼接続要求信号を記憶する方法等によって、本発明の予約型呼接続方法を適用する端末の呼接続要求時刻、呼接続要求信号を入り回線1,信号受信部31を介して信号記憶部32に記憶する。
【0011】
(b)信号記憶部32に記憶する時刻の前に、交換装置2は信号記憶部32に記憶しておいた呼接続要求信号を呼接続処理部33に転送する。呼接続処理部33では呼接続要求信号に従って呼接続処理を行い、信号送出部35に該呼接続要求信号を転送する。信号送出部35は、予約型呼接続方法の場合には信号比較部34からの呼接続要求信号送出命令を受け取るまで出回線4に呼接続要求信号を送出しないように作られており、該呼接続要求信号は待機される。
【0012】
(c)入り回線1から受信した呼接続要求信号は、信号受信部31を介して信号比較部34に転送され、信号記憶部32に記憶されていた呼接続要求信号と比較される。その結果、これらの信号が全く同一内容の呼接続要求信号であると見なされた場合は、信号送出部35に呼接続要求信号送出命令を送信し、異なる場合は呼接続処理部33に該呼接続要求信号を送出する。呼接続処理部33は、従来の呼接続方法と同様の手順で呼接続処理を行い、信号送出部35に呼接続要求信号を転送する。
【0013】
(d)信号送出部35は、信号比較部34からの呼接続信号送出命令を受け取った場合には(b)で待たされていた呼接続要求信号を出回線4に送出し、呼接続処理部33からの呼接続要求信号を受け取った場合には(b)で待たされていた呼接続要求信号を廃棄し、呼接続処理部33からの呼接続要求信号を出回線3に送出する。
【0014】
次に、図2により本発明の請求項3,4に対応する実施例を示す。
前記の(b)において、第1回目の予約型呼接続方法の実施時に、呼接続処理を行った結果である呼制御情報と出回線に送出する呼接続要求信号を呼制御情報/呼接続要求信号記憶部321に記憶しておく。ここで呼制御情報とは、当該通信リンクの状態遷移管理番号、相手先番号、通信に係わる各種パラメータ等の情報であって、呼接続時ばかりでなく、通信中に必要になる情報のことである。
【0015】
第2回目以降の予約型呼接続方法の実施時には、請求項1,2のように呼接続処理を直ちに行うのではなく、第1回目の予約型接続方法の実施時に記憶しておいた呼制御情報を呼接続処理部33の呼制御メモリ部331に複写し、同時に記憶しておいた出回線に送出する呼接続要求信号を信号送出部35に転送しておく。その他の処理方法については、前の請求項1,2の実施例と同一である。
【0016】
本発明の制御のフローを図4を参照して説明する。
I.ユーザーもしくはオペレータにより登録依頼を受け、それを登録して登録動作を完了する。
【0017】
II.一斉発呼の準備として、
a.入力パケットのチェック、
b.加入条件のチェック、
c.各種サービスの実行、
d.番号の翻訳、
e.出力パケットの編集、
を行う。
【0018】
III.接続要求による処理の切り替えとして、
f.端末からの接続要求を待ち、
g.端末からのパケット入力があれば、
h.前回接続要求パケットと比較し、
f.端末からの接続要求が所定の時間なければVIIに処理が移る。
【0019】
IV.hにおいて、前回接続要求パケットと比較して、その結果が同一ならば
i.パケットを出力して呼受付待ち(Call Accepted 待ち)となる。
【0020】
V.前回の接続要求パケットと比較し、その結果が異なる場合は、再登録の準備として、
k.入力パケットのチェック、
l.加入条件のチェック、
m.各種サービスの実行、
n.番号の翻訳、
o.出力パケットの編集、
p.パケットの出力、
の処理を準備する。
【0021】
VI.Vで準備した処理ステップに引き続いて、
q.接続要求パケットの再登録を行い、
呼受付待ちとなる。
【0022】
VII.III.のfで端末からの接続要求がなければ、
j.処理内容を廃棄し、
空き状態となる。
【0023】
【発明の効果】
以上説明したように、本発明によれば呼接続要求時に交換装置で行うべき処理の大部分を予め処理することができる。このため、呼接続要求が一時的に増加した場合等に交換装置の負荷を平滑化することが可能であり、交換装置での遅延時間を減少し、交換装置の輻輳を避けることが可能になる。
【図面の簡単な説明】
【図1】図1は請求項1を実現するための本発明の実施例を示す。
【図2】図2は請求項3を実現するための本発明の実施例を示す。
【図3】図3は従来の呼接続処理のフローを示す。
【図4】図4は本発明の実施例のフローを示す。
【符号の説明】
1 入り回線
2 交換装置
4 出回線
31 信号受信部
321 呼制御情報/呼接続要求信号記憶部
33 呼接続処理部
331 呼制御情報メモリ部
35 信号送出部
[0001]
[Industrial application fields]
The present invention relates to a method and apparatus for performing computer processing on an exchange apparatus to smooth the processing load of the exchange apparatus.
[0002]
[Prior art]
Conventionally, call connection processing is performed based on a call connection request signal arriving from an incoming line, and processing in the communication processing apparatus is performed in the procedure shown in FIG. That is,
(1) It is confirmed whether the signal format input from the incoming line is the correct format according to the protocol provided by the exchange (check of input packet).
(2) The subscription condition of the user who transmitted the signal input in (1) or the user who receives the signal is confirmed. If the subscription condition is not subscribed, the signal is discarded (subscription condition check).
(3) Execute various services prepared in the exchange (execution of various services).
(4) From the called party number, the originating side switching device obtains the trunk line number, and the terminating side switching device obtains the subscriber line accommodation position and the like (translation of the number).
(5) Edit the packet output to the outgoing line (edit output packet).
(6) A signal is output to the outgoing line (packet output).
All of these processes were performed after receiving a signal from the line.
[0003]
[Problems to be solved by the invention]
As described above, in the conventional call connection method, the call connection processing is performed after waiting for the call connection request signal from the incoming line. Therefore, the load on the switching apparatus is greatly influenced by the number of call connection request signals from the incoming line. Therefore, when the number of requests temporarily increases, an increase in delay time, congestion, and the like are caused.
[0004]
An object of the present invention is to solve the above-described problems and smooth the load on the exchange device.
[0005]
[Means for Solving the Problems]
The method of the present invention is characterized in that a call connection request signal from an incoming line is predicted by a communication processing device, and a call connection process is prepared in advance before receiving the call connection request signal from the line.
[0006]
As a method for predicting a call connection request signal, for example, a method in which a user who makes a call connection registers the contents of the call connection request signal in the communication processing device in advance, and a previous call connection request signal from the user is a communication processing device There is a method to memorize in.
[0007]
By predicting the call connection request signal at the exchange, in the processing procedure of FIG. 3, at least the processing from (1) to (5) is performed by referring to the previous call connection request signal. This can be done before the arrival of the signal.
[0008]
[Action]
By adopting the above prediction processing, the amount of processing that needs to be performed when call connection request signals from incoming lines are concentrated in a short time becomes extremely small, and the load on the switching apparatus can be smoothed. .
[0009]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In this embodiment, X25 packet exchange is taken as an example, but this method is effective for all other protocols that perform call connection processing by call connection request signals from incoming lines such as Q931 and Q933.
[0010]
【Example】
FIG. 1 shows an embodiment corresponding to claims 1 and 2 of the present invention.
(A) A terminal to which the reservation type call connection method of the present invention is applied, for example, by a method of registering a call connection request signal in advance at the time of subscription or a method of storing a previous call connection request signal from the incoming line 1 The call connection request time and the call connection request signal are stored in the signal storage unit 32 via the incoming line 1 and the signal receiving unit 31.
[0011]
(B) Before the time stored in the signal storage unit 32, the exchange 2 transfers the call connection request signal stored in the signal storage unit 32 to the call connection processing unit 33. The call connection processing unit 33 performs call connection processing according to the call connection request signal, and transfers the call connection request signal to the signal transmission unit 35. In the case of the reservation type call connection method, the signal sending unit 35 is configured not to send a call connection request signal to the outgoing line 4 until a call connection request signal sending command is received from the signal comparison unit 34. The connection request signal is waited.
[0012]
(C) The call connection request signal received from the incoming line 1 is transferred to the signal comparison unit 34 via the signal reception unit 31 and compared with the call connection request signal stored in the signal storage unit 32. As a result, when these signals are regarded as call connection request signals having exactly the same contents, a call connection request signal transmission command is transmitted to the signal transmission unit 35. Send connection request signal. The call connection processing unit 33 performs call connection processing in the same procedure as in the conventional call connection method, and transfers the call connection request signal to the signal transmission unit 35.
[0013]
(D) When receiving the call connection signal transmission command from the signal comparison unit 34, the signal transmission unit 35 transmits the call connection request signal waited in (b) to the outgoing line 4, and the call connection processing unit When the call connection request signal from 33 is received, the call connection request signal waited in (b) is discarded, and the call connection request signal from the call connection processing unit 33 is sent to the outgoing line 3.
[0014]
Next, FIG. 2 shows an embodiment corresponding to claims 3 and 4 of the present invention.
In (b) above, when the first reservation type call connection method is executed, call control information which is a result of the call connection processing and a call connection request signal to be sent to the outgoing line are called the call control information / call connection request. This is stored in the signal storage unit 321. Here, the call control information is information such as the state transition management number of the communication link, the other party number, various parameters related to communication, and the like, which is necessary not only at the time of call connection but also during communication. is there.
[0015]
When the reservation type call connection method after the second time is executed, the call control process stored in the execution of the first reservation type connection method is not performed immediately as in claims 1 and 2, but the call control stored in the first time. The information is copied to the call control memory unit 331 of the call connection processing unit 33, and the call connection request signal transmitted to the outgoing line stored at the same time is transferred to the signal transmission unit 35. Other processing methods are the same as those of the first and second embodiments.
[0016]
The control flow of the present invention will be described with reference to FIG.
I. The registration request is received by the user or operator, and the registration is completed.
[0017]
II. As preparation for simultaneous call,
a. Check incoming packets,
b. Check subscription conditions,
c. Execution of various services,
d. Number translation,
e. Editing output packets,
I do.
[0018]
III. As switching of processing by connection request,
f. Wait for connection request from terminal,
g. If there is packet input from the terminal,
h. Compared to the previous connection request packet,
f. If there is no connection request from the terminal for a predetermined time, the process proceeds to VII.
[0019]
IV. In h, if the result is the same as compared with the previous connection request packet, i. The packet is output and the call is waiting for call acceptance (waiting for Call Accepted).
[0020]
V. If the result is different compared to the previous connection request packet, as preparation for re-registration,
k. Check incoming packets,
l. Check subscription conditions,
m. Execution of various services,
n. Number translation,
o. Editing output packets,
p. Packet output,
Prepare the process.
[0021]
VI. Following the processing steps prepared in V,
q. Re-register the connection request packet,
Wait for call acceptance.
[0022]
VII. If there is no connection request from the terminal in f of III.
j. Discard the processing contents
It becomes empty.
[0023]
【The invention's effect】
As described above, according to the present invention, most of the processing to be performed by the switching apparatus when a call connection is requested can be processed in advance. For this reason, it is possible to smooth the load on the switching apparatus when the call connection request temporarily increases, etc., to reduce the delay time in the switching apparatus and to avoid congestion of the switching apparatus. .
[Brief description of the drawings]
FIG. 1 shows an embodiment of the invention for realizing claim 1;
FIG. 2 shows an embodiment of the invention for realizing claim 3;
FIG. 3 shows a flow of a conventional call connection process.
FIG. 4 shows a flow of an embodiment of the present invention.
[Explanation of symbols]
1 incoming line
2 Exchange device
4 outgoing lines
31 Signal receiver
321 Call control information / call connection request signal storage unit
33 Call connection processor
331 Call control information memory
35 Signal transmitter

Claims (4)

入り回線と出回線を備えた交換装置において、
入り回線から信号受信部を介して受信された呼接続要求信号を予め記憶する信号記憶部と、
前記信号記憶部に予め記憶した呼接続要求信号に基づいて、該呼接続要求信号のフォーマットが当該交換装置のプロトコルに沿ったものであるかどうかの確認、当該呼接続要求信号を送信したユーザ、または該信号を受け取るユーザの加入条件の確認、当該交換装置に用意されている各種サービスの実行、着信相手番号からの、発信側交換装置での中継線番号や着信側交換装置での加入者回線収容位置等の検索、出回線に出力するパケットの編集等の呼接続処理を行い、出回線に出力するパケットに編集された呼接続要求信号を信号送出部へ送信する呼接続処理部と、
入り回線から受信された呼接続要求信号と前記記憶部に予め記憶した呼接続要求信号とを比較し、それらの信号が同一の場合には信号送出部に呼接続要求信号送出命令を送出する信号比較部と、
前記送出命令に従い出回線に呼接続要求信号を送出する信号送出部、
を備えたことを特徴とする予約型呼接続が可能な交換装置。
In switching equipment with incoming and outgoing lines,
A signal storage unit for storing in advance the call connection request signal received from the incoming line via the signal receiving unit;
Based on the call connection request signal stored in advance in the signal storage unit, confirming whether the format of the call connection request signal conforms to the protocol of the switching device, the user who transmitted the call connection request signal, Or confirmation of the subscription conditions of the user who receives the signal, execution of various services prepared in the switching device, the trunk line number in the calling side switching device or the subscriber line in the receiving side switching device from the called party number A call connection processing unit that performs a call connection process such as a search for an accommodation position and the like , edits a packet that is output to the outgoing line, and transmits a call connection request signal that is edited into a packet that is output to the outgoing line,
The call connection request signal received from the incoming line is compared with the call connection request signal stored in advance in the storage unit, and if the signals are the same, a call connection request signal transmission command is transmitted to the signal transmission unit. A signal comparison unit;
A signal sending unit for sending a call connection request signal to the outgoing line according to the sending command;
A switching apparatus capable of reservation type call connection.
入り回線と出回線とを備えた交換装置による交換方法において、前記交換装置が、
入り回線から信号受信部を介して受信された呼接続要求信号を予め記憶し、
前記予め記憶した呼接続要求信号に基づいて、該呼接続要求信号のフォーマットが当該交換装置のプロトコルにそったものであるかどうかの確認、当該呼接続要求信号を送信したユーザ、または該信号を受け取るユーザの加入条件の確認、当該交換装置に用意されている各種サービスの実行、着信相手番号からの、発信側交換装置での中継線番号や着信側交換装置での加入者回線収容位置等の検索、出回線に出力するパケットの編集等の呼接続処理を行い、
入り回線から呼接続要求信号を受信すると、該呼接続要求信号と前記予め記憶した呼接続要求信号とを比較し、それらの信号が同一の場合には、前記呼接続処理を行った呼接続要求信号を出回線に送出すること、
を特徴とする予約型呼接続が可能な交換方法。
In an exchange method using an exchange device having an incoming line and an outgoing line, the exchange device comprises:
Pre-store the call connection request signal received from the incoming line via the signal receiver,
Based on the call connection request signal stored in advance, whether the format of the call connection request signal conforms to the protocol of the switching apparatus, the user who transmitted the call connection request signal, or the signal Confirming the subscription conditions of the receiving user, executing various services prepared in the switching equipment, such as the trunk line number at the originating switching equipment and the subscriber line accommodation position at the receiving switching equipment from the called party number Performs call connection processing such as searching and editing packets output to the outgoing line.
When a call connection request signal is received from an incoming line, the call connection request signal is compared with the previously stored call connection request signal, and if the signals are the same, the call connection request that has performed the call connection processing Sending a signal to the outgoing line,
An exchange method capable of reservation type call connection characterized by the above.
入り回線と出回線を備えた交換装置において、
入り回線から信号受信部を介して受信された呼接続要求信号を予め記憶する信号記憶部と、
前記呼接続要求信号に基づいて、該呼接続要求信号のフォーマットが当該交換装置のプロトコルに沿ったものであるかどうかの確認、当該呼接続要求信号を送信したユーザ、または該信号を受け取るユーザの加入条件の確認、当該交換装置に用意されている各種サービスの実行、着信相手番号からの、発信側交換装置での中継線番号や着信側交換装置での加入者回線収容位置等の検索、出回線に出力するパケットの編集等の呼接続処理を行う呼接続処理部と、
前記信号記憶部に記憶した呼接続要求信号に基づいて前記呼接続処理部にて行った初回の呼接続処理の結果得られた、相手先番号や通信に係わる各種パラメータ等の呼制御情報と、前記出回線に出力するパケットに編集された呼接続要求信号とを記憶しておく呼制御情報/呼接続要求信号記憶部と、
入り回線から受信された呼接続要求信号と前記信号記憶部に予め記憶した呼接続要求信号とを比較し、それらの信号が同一の場合には信号送出部に呼接続要求信号送出命令を送出する信号比較部と、
前記送出命令に従い出回線に呼接続要求信号を送出する信号送出部と、
を備え、
前記呼接続処理部が、前記呼制御情報/呼接続要求信号記憶部からの前記呼制御情報を複写する呼制御情報メモリ部を有し、該呼接続処理部が、2回目以降の呼接続処理に対して、前記呼制御情報/呼接続要求信号記憶部に記憶した前記初回の呼接続処理の結果得ら れた呼制御情報を前記呼接続処理部の前記呼制御情報メモリ部に複写し、該複写した呼制御情報に基づいて呼接続処理を行い、且つ前記呼制御情報/呼接続要求信号記憶部が、該記憶部に記憶した呼接続要求信号を前記信号送出部に転送しておくようにしたことを特徴とする予約型呼接続が可能な交換装置。
In switching equipment with incoming and outgoing lines,
A signal storage unit for storing in advance the call connection request signal received from the incoming line via the signal receiving unit;
Based on the call connection request signal, whether or not the format of the call connection request signal conforms to the protocol of the switching device, the user who transmitted the call connection request signal, or the user who receives the signal Confirming the subscription conditions, executing various services prepared for the switching equipment, searching for the trunk line number at the originating switching equipment and the location of the subscriber line at the receiving switching equipment, etc. A call connection processing unit for performing a call connection process such as editing a packet to be output to the line;
Call control information such as a partner number and various parameters related to communication obtained as a result of the first call connection processing performed in the call connection processing unit based on the call connection request signal stored in the signal storage unit; A call control information / call connection request signal storage unit for storing a call connection request signal edited in a packet to be output to the outgoing line ;
The call connection request signal received from the incoming line is compared with the call connection request signal stored in advance in the signal storage unit, and if the signals are the same, a call connection request signal transmission command is sent to the signal transmission unit. A signal comparator to
A signal sending unit for sending a call connection request signal to an outgoing line according to the sending command;
With
The call connection processing unit includes a call control information memory unit for copying the call control information from the call control information / call connection request signal storage unit, and the call connection processing unit performs the second and subsequent call connection processing. respect, copying the call control information / call connection request signal wherein the resulting et call control information of the call connection process for the first time stored in the storage unit to the call control information memory unit of the call connection processing unit, Call connection processing is performed based on the copied call control information, and the call control information / call connection request signal storage unit transfers the call connection request signal stored in the storage unit to the signal transmission unit. A switching apparatus capable of reservation-type call connection, characterized in that it is configured as described above.
入り回線と出回線とを備えた交換装置による交換方法において、前記交換装置が、
入り回線から信号受信部を介して受信された呼接続要求信号を予め記憶し、
前記予め記憶した呼接続要求信号に基づいて、該呼接続要求信号のフォーマットが当該交換装置のプロトコルに沿ったものであるかどうかの確認、当該呼接続要求信号を送信したユーザ、または該信号を受け取るユーザの加入条件の確認、当該交換装置に用意されている各種サービスの実行、着信相手番号からの、発信側交換装置での中継線番号や着信側交換装置での加入者回線収容位置等の検索、出回線に出力するパケットの編集等の呼接続処理を行い、
前記予め記憶した呼接続要求信号に基づいて行った初回の呼接続処理の結果得られた、相手先番号や通信に係わる各種パラメータ等の呼制御情報と、前記出回線に出力するパケットに編集された呼接続要求信号とを記憶しておき、
前記初回の呼接続処理にて得られた前記呼制御情報に基づいて2回目以降は前記呼制御情報/呼接続要求信号記憶部に記憶した前記初回の呼接続処理の結果得られた呼制御情報を前記呼接続処理部の前記呼制御情報メモリ部に複写し、該複写した呼制御情報に基づいて呼接続処理を行い、
入り回線から受信された呼接続要求信号と前記予め記憶した呼接続要求信号とを比較し、それらの信号が同一の場合に、前記呼制御情報と共に記憶した前記呼接続要求信号を出回線に送出すること、
を特徴とする予約型呼接続が可能な交換方法。
In an exchange method using an exchange device having an incoming line and an outgoing line, the exchange device comprises:
Pre-store the call connection request signal received from the incoming line via the signal receiver,
Based on the call connection request signal stored in advance, whether the format of the call connection request signal conforms to the protocol of the switching apparatus, the user who transmitted the call connection request signal, or the signal Confirming the subscription conditions of the receiving user, executing various services prepared in the switching equipment, such as the trunk line number at the originating switching equipment and the subscriber line accommodation position at the receiving switching equipment from the called party number Performs call connection processing such as searching and editing packets output to the outgoing line.
It is edited into call control information such as destination number and various parameters related to communication obtained as a result of the first call connection processing performed based on the call connection request signal stored in advance, and a packet to be output to the outgoing line. It was stores the call connection request signal,
Call control information obtained as a result of the first call connection process stored in the call control information / call connection request signal storage unit for the second and subsequent times based on the call control information obtained in the first call connection process Is copied to the call control information memory unit of the call connection processing unit, call connection processing is performed based on the copied call control information ,
The call connection request signal received from the incoming line is compared with the previously stored call connection request signal, and if the signals are the same, the call connection request signal stored together with the call control information is sent to the outgoing line. To do,
An exchange method capable of reservation type call connection characterized by the above.
JP11176093A 1993-05-13 1993-05-13 Switching apparatus capable of reservation type call connection and method thereof Expired - Fee Related JP3776136B2 (en)

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