JPS63234743A - Signal multiplexzation equipment - Google Patents

Signal multiplexzation equipment

Info

Publication number
JPS63234743A
JPS63234743A JP6786687A JP6786687A JPS63234743A JP S63234743 A JPS63234743 A JP S63234743A JP 6786687 A JP6786687 A JP 6786687A JP 6786687 A JP6786687 A JP 6786687A JP S63234743 A JPS63234743 A JP S63234743A
Authority
JP
Japan
Prior art keywords
order group
signals
group pcm
signal
section
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
JP6786687A
Other languages
Japanese (ja)
Inventor
Hiroshi Ninomiya
弘 二宮
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 JP6786687A priority Critical patent/JPS63234743A/en
Publication of JPS63234743A publication Critical patent/JPS63234743A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To minimize a circuit scale aud to improve an economic property by comparing respective corresponding bits of a high order group PCM signal multiplexed by a first multiplexing part and the bits of a high order group PCM signal to multiplex a low order group PCM signal stored in a memory with a second multiplexing part. CONSTITUTION:At a B-U part 1 of a transmitting side main line system 201, a low order group PCM signal is converted from a bipolar signal to a unipolar signal and made into a high order group PCM signal by means of a transmitting memory part 2 and a first multiplexing part 3 and outputted through a U-B part 4. The low order group PCM signal converted by the B-U part 1 is made into the high order group PCM through a transmitting memory 5 of a bit collating system 301 by a second multiplexing part 6, the bit collation is executed by the output of the multiplexing part 3 and a bit collating system 301, and the abnormality of the equipment of the main line 201 is detected by a small circuit not necessary to execute the bit comparison for each low order group PCM signal with a satisfactory economy. The abnormal detection of the receiving side main line system can be executed in the same way.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は信号を多重化する通信装置に関し、特に装置の
異常を検出する機能を備えた信号多重化装置に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device that multiplexes signals, and more particularly to a signal multiplexing device that has a function of detecting an abnormality in the device.

〔従来の技術〕[Conventional technology]

第2図に従来の信号多重化装置のブロック図を示す。こ
の装置は送信時に、多重化後の1群の高次群PCM信号
を再び低次群PCM信号に戻し、多重化前の低次群PC
M信号と比較することによって装置の異常を検出してい
る。
FIG. 2 shows a block diagram of a conventional signal multiplexing device. At the time of transmission, this device returns one group of high-order group PCM signals after multiplexing to low-order group PCM signals, and converts the low-order group PCM signals before multiplexing into
Abnormalities in the device are detected by comparing with the M signal.

すなわち、n群の低次群PCM信号5INI〜S IN
nはB−0部101でバイポーラ信号からユニポーラ信
号に変換され、送信側本線系200の送信メモリ部10
2とビット照合系300の送信メモリ部15に記憶され
る。送信メモリ部102に記憶されたn群の低次群PC
M信号は多重化部103からのタイミングで同期化して
読み出され、多重化部103で1群の高次群PCM信号
に多重化される。この信号はU−B部104でユニポー
ラ信号からバイポーラ信号5OUTに変換されて伝送路
に送出される。
That is, n groups of low-order group PCM signals 5INI to SIN
n is converted from a bipolar signal to a unipolar signal in the B-0 section 101, and is sent to the transmission memory section 10 of the transmission side main line system 200.
2 and is stored in the transmission memory section 15 of the bit matching system 300. n groups of low-order group PCs stored in the transmission memory section 102
The M signals are read out in synchronization with the timing from the multiplexer 103, and multiplexed into one group of higher-order group PCM signals by the multiplexer 103. This signal is converted from a unipolar signal to a bipolar signal 5OUT by the U-B section 104 and sent to the transmission path.

また、多重化部103からの1群の高次群PCM信号1
08は、ビット照合系300の分離部18で再びn群の
低次群PCM信号に分離され、受信メモリ部17に記憶
される。送信メモリ部15と受信メモリ部17とに記憶
された両像次群PCM信号は、ビット比較部16のタイ
ミングで同期化して読み出され、ビット比較部16によ
りこれら信号の各ビットが照合される。その結果、ビッ
トが不一致となった場合は、送信メモリ部102あるい
は多重化部103に異常が発生していることになる。
Also, one group of high-order group PCM signals 1 from the multiplexing section 103
08 is again separated into n groups of low-order group PCM signals by the separation unit 18 of the bit matching system 300 and stored in the reception memory unit 17. Both image next group PCM signals stored in the transmission memory section 15 and the reception memory section 17 are read out in synchronization with the timing of the bit comparison section 16, and each bit of these signals is compared by the bit comparison section 16. . As a result, if the bits do not match, it means that an abnormality has occurred in the transmission memory section 102 or the multiplexing section 103.

この装置は受信時にもこのようなビット照合を行って装
置の異常を検出している。これについて次に説明する。
This device also performs such bit verification during reception to detect abnormalities in the device. This will be explained next.

受信側本線系400で受信された高次群PCM信号RI
NはB−0部110でユニポーラ信号に変換される。そ
の後、分離部111でn群の低次群PCM信号に分離さ
れ、受信メモリ部112に記憶される。受信メモリ部1
12から読み出された低次群PCM信号はU−8部11
3でバイポーラ信号ROUTI〜ROUTnに変換され
、伝送路に送出される。
High-order group PCM signal RI received by the receiving side main line system 400
N is converted into a unipolar signal in the B-0 section 110. Thereafter, the signal is separated into n groups of low-order group PCM signals by the separation section 111 and stored in the reception memory section 112. Reception memory section 1
The low-order group PCM signal read from 12 is sent to U-8 section 11.
3, the signals are converted into bipolar signals ROUTI to ROUTn and sent to the transmission path.

また、B−0部110でユニポーラ信号に変換された1
群の高次群PCM信号114はビット照合系300の分
離部18でn群の低次群PCM信号に分離され、受信メ
モリ部17に記憶される。一方、受信側本線系400で
分離された低次群PCM信号はビット照合系300の送
信メモリ部15に記憶される。
Also, 1 converted into a unipolar signal in the B-0 section 110
The high-order group PCM signals 114 of the group are separated into n groups of low-order group PCM signals by the separation section 18 of the bit matching system 300 and stored in the reception memory section 17. On the other hand, the low-order group PCM signal separated by the receiving side main line system 400 is stored in the transmission memory section 15 of the bit matching system 300.

送信メモリ部15と受信メモリ部17にそれぞれ記憶さ
れた低次群PCM信号は、ビット比較部16のタイミン
グでそれぞれ読み出され、ビット比較部16によりこれ
ら信号の各ビットが照合される。その結果、ビットが不
一致となった場合は、分離部111あるいは受信メモリ
部112に異常が発生していることになる。
The low-order group PCM signals respectively stored in the transmission memory section 15 and the reception memory section 17 are read out at the timing of the bit comparison section 16, and each bit of these signals is compared by the bit comparison section 16. As a result, if the bits do not match, it means that an abnormality has occurred in the separation section 111 or the reception memory section 112.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来の信号多重化装置では、多重化される低次
群PCM信号の数nだけ前記送信/受信メモリ部と前記
ビット比較部からなるピント照合部を設ける必要がある
。そのため回路規模が太き(、コストの点で不利である
In the above-described conventional signal multiplexing device, it is necessary to provide as many focus matching sections each consisting of the transmission/reception memory section and the bit comparison section as the number n of low-order group PCM signals to be multiplexed. Therefore, the circuit scale is large (and disadvantageous in terms of cost).

本発明の目的は、とのような欠点を除去し、回路規模が
小さく、低コスト化が可能な信号多重化装置を提供する
ことにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a signal multiplexing device that eliminates the above disadvantages, has a small circuit scale, and is capable of reducing costs.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は、第1の多重化部を備え、複数の低次群PCM
信号をこの多重化部により1群の高次群PCM信号に多
重化して出力する装置において、前記低次群PCM信号
を記憶するメモリ部と、このメモリ部から読み出した前
記低次群PCM信号を1群の高次群PCM信号に多重化
する第2の多重化部と、 前記第1の多重化部により多重化された1群の高次群P
CM信号と、前記第2の多重化部により多重化部された
1群の高次群PCM信号とを比較し、これら2つの信号
の各ビットが一致するか否かを検査する比較部とを備え
たことを特徴とする。
The present invention includes a first multiplexing section, and a plurality of low-order group PCMs.
The apparatus for multiplexing signals into a group of high-order group PCM signals by the multiplexing section and outputting the same includes a memory section for storing the low-order group PCM signals, and a memory section for storing the low-order group PCM signals read from the memory section. a second multiplexing unit that multiplexes the high-order group PCM signals into the high-order group PCM signals; and one group of high-order groups P multiplexed by the first multiplexing unit.
a comparison section that compares the CM signal and one group of high-order group PCM signals multiplexed by the second multiplexing section, and tests whether each bit of these two signals matches. It is characterized by

〔実施例〕〔Example〕

次に本発明の一実施例について説明する。 Next, one embodiment of the present invention will be described.

第1図に本実施例のブロック図を示す。この装置は、送
信側本線系201、ビット照合系3o1、ならびに受信
側本線系401によって構成されている。
FIG. 1 shows a block diagram of this embodiment. This device is composed of a transmitting side main line system 201, a bit matching system 3o1, and a receiving side main line system 401.

まず、送信側本線系201について説明する。B−0部
1は伝送路から入力されたn群の低次群PCM信号5I
NI〜5INnをバイポーラ信号からユニポーラ信号に
変換し、後述する送信メモリ部2とビット照合系301
に出力する。送信メモリ部2はB−0部1からの低次群
PCM信号を記憶する。記憶された信号は後述する多重
化部3のタイミングで同期化してそれぞれ読み出され、
多重化部3に入力される。
First, the transmitting side main line system 201 will be explained. B-0 section 1 receives n groups of low-order group PCM signals 5I input from the transmission path.
NI to 5INn are converted from bipolar signals to unipolar signals, and sent to the transmission memory section 2 and bit matching system 301, which will be described later.
Output to. The transmission memory section 2 stores the low-order group PCM signal from the B-0 section 1. The stored signals are read out in synchronization with the timing of the multiplexing unit 3, which will be described later.
The signal is input to the multiplexing section 3.

多重化部3は送信メモリ部2から読み出されたn群の低
次群PCM信号を1群の高次群PCM信号に多重化し、
U−8部4とビット照合系301に出力する。U−8部
4は多重化部3からの1群の高次群PCM信号をユニポ
ーラ信号からバイポーラ信号に変換して伝送路に出力す
る。
The multiplexing unit 3 multiplexes n groups of low-order group PCM signals read from the transmission memory unit 2 into one group of high-order group PCM signals,
It is output to the U-8 section 4 and the bit verification system 301. The U-8 section 4 converts one group of high-order group PCM signals from the multiplexing section 3 from unipolar signals to bipolar signals, and outputs the converted signals to the transmission path.

このように構成された送信側本線系201にn群の低次
群PCM信号5INI〜5INnが入力されると、これ
らの信号はB−0部1においてまずバイポーラ信号から
ユニポーラ信号に変換された後、送信メモリ部2に記憶
される。記憶された信号は多重化部3のタイミングで同
期化してそれぞれ読み出され、多重化部3に入力される
。多重化部3は送信メモリ部2から読み出されたn群の
低次群PCM信号を1群の高次群PCM信号に多重化し
、U−8部4とビット照合系301に出力する。
When n groups of low-order group PCM signals 5INI to 5INn are input to the transmitting main line system 201 configured as described above, these signals are first converted from bipolar signals to unipolar signals in the B-0 unit 1, and then converted into unipolar signals. , are stored in the transmission memory section 2. The stored signals are read out in synchronization with the timing of the multiplexer 3 and input to the multiplexer 3. The multiplexing unit 3 multiplexes n groups of low-order group PCM signals read from the transmission memory unit 2 into one group of high-order group PCM signals, and outputs the signal to the U-8 unit 4 and the bit matching system 301.

U−8部4は多重化部3からの1群の高次群PCM信号
をユニポーラ信号からバイポーラ信号に変換して伝送路
に出力する。
The U-8 section 4 converts one group of high-order group PCM signals from the multiplexing section 3 from unipolar signals to bipolar signals, and outputs the converted signals to the transmission path.

次に、受信側本線系401について説明する。B−0部
10は伝送路から入力された1群の高次群PCM信号R
TNをバイポーラ信号からユニポーラ信号に変換し、そ
の出力を分離部11とビット照合系301に供給する。
Next, the receiving side main line system 401 will be explained. The B-0 section 10 receives one group of high-order group PCM signals R input from the transmission line.
TN is converted from a bipolar signal to a unipolar signal, and the output thereof is supplied to the separation unit 11 and the bit matching system 301.

分離部11はB−0部10からの1群の高次群PCM信
号をn群の低次群PCM信号に分離する。受信メモリ部
12は分離部11からの低次群PC,M信号を記憶し、
その読み出し信号はU−8部13とビット照合系301
に出力する。U−8部13は受信メモリ部12から読み
出された低次群PCM信号をユニポーラ信号からバイポ
ーラ信号に変換し、n群の低次群PCM信号ROUTI
〜ROUTnとして伝送路に出力する。
The separation unit 11 separates one group of high-order group PCM signals from the B-0 unit 10 into n groups of low-order group PCM signals. The reception memory section 12 stores the low-order group PC, M signals from the separation section 11,
The read signal is sent to the U-8 section 13 and the bit collation system 301.
Output to. The U-8 unit 13 converts the low-order group PCM signal read from the reception memory unit 12 from a unipolar signal to a bipolar signal, and converts the low-order group PCM signal ROUTI of n groups.
- Output to the transmission line as ROUTn.

このように構成された受信側本線系401に1群の高次
群PCM信号RINが入力されると、この信号はB−0
部10でバイポーラ信号からユニポーラ信号に変換され
た後、分離部11に入力され、そこでn群の低次群PC
M信号に分離される。受信メモリ部12は分離されたこ
れらn群の低次群PCM信号をそれぞれ記憶する。そし
て、記憶されたn群の低次群PCM信号は、受信メモリ
部12から読み出され、U−8部13とビット照合系3
01に出力される。U−8部13はこれらの信号を受は
取ると、ユニポーラ信号からバイポーラ信号に変換し、
n群の低次群PCM信号ROUTI 〜ROUTnとし
て伝送路に出力する。
When one group of high-order group PCM signals RIN is input to the receiving side main line system 401 configured in this way, this signal becomes B-0.
After the bipolar signal is converted into a unipolar signal in section 10, it is input to separation section 11, where n groups of low-order group PCs are
It is separated into M signals. The reception memory unit 12 stores each of these n groups of separated low-order group PCM signals. Then, the stored n groups of low-order group PCM signals are read out from the reception memory section 12, and sent to the U-8 section 13 and the bit matching system 3.
01. When the U-8 unit 13 receives these signals, it converts the unipolar signal into a bipolar signal,
It is output to the transmission line as n groups of low-order group PCM signals ROUTI to ROUTn.

次に、ビット照合系301について説明する。送信メモ
リ部5は送信側本線系201のB−0部1あるいは受信
側本線系401の受信メモリ部12からの低次群PCM
信号を記憶する。記憶された信号は多重化部6のタイミ
ングで同期化してそれぞれ読み出され、多重化部6に入
力される。多重化部6は送信メモリ部5から読み出され
た送信側本線系201または受信側本線系401からの
n群の低次群PCM信号を1群の高次群PCM信号9に
多重化する。ビット比較部7は多重化部6からの1群の
高次群PCM信号9と、送信側本線系201からの1群
の高次群PCM信号8または受信側本線系401からの
1群の高次群PCM信号14とを比較し、これら2つの
信号の各ビットを照合する。
Next, the bit matching system 301 will be explained. The transmitting memory unit 5 stores the low-order group PCM from the B-0 unit 1 of the transmitting side main line system 201 or the receiving memory unit 12 of the receiving side main line system 401.
Memorize the signal. The stored signals are read out in synchronization with the timing of the multiplexer 6 and input to the multiplexer 6 . The multiplexing unit 6 multiplexes n groups of low-order group PCM signals from the transmitting side main line system 201 or the receiving side main line system 401 read from the transmission memory unit 5 into one group of high-order group PCM signals 9. The bit comparison unit 7 receives one group of high-order group PCM signals 9 from the multiplexing unit 6 and one group of high-order group PCM signals 8 from the transmitting side main line system 201 or one group of high order group PCM signals 14 from the receiving side main line system 401. and match each bit of these two signals.

ビット照合系301の動作について、まず送信側本線系
201の異常を検出する場合を説明する。B−0部1か
らn群の低次群PCM信号が入力されると、送信メモリ
部5はこれらの信号をそれぞれ記憶する。記憶された各
信号は多重化部6のタイミングで同期化してそれぞれ読
み出され、多重化部6に入力される。多重化部6はこれ
らn群の低次群PCM信号を1群の高次群PCM信号9
に多重化する。ビット比較部7は多重化部6からのこの
1群の高次群PCM信号9と、送信側本線系201の多
重化部3からの1群の高次群PCM信号8とを比較し、
これら2つの信号の各ビットを照合する。その結果、ビ
ットが不一致となった場合は、送信メモリ部2あるいは
多重化部3に異常が発生していることになる。送信側本
線系201の装置異常はこのようにして検出される。
Regarding the operation of the bit verification system 301, the case where an abnormality in the transmitting side main line system 201 is detected will be described first. When n groups of low-order group PCM signals are input from the B-0 section 1, the transmission memory section 5 stores these signals, respectively. Each of the stored signals is read out in synchronization with the timing of the multiplexer 6 and input to the multiplexer 6 . The multiplexing unit 6 converts these n groups of low-order group PCM signals into one group of high-order group PCM signals 9.
multiplexed into The bit comparison unit 7 compares this one group of high-order group PCM signals 9 from the multiplexing unit 6 with one group of high-order group PCM signals 8 from the multiplexing unit 3 of the transmitting main line system 201,
Each bit of these two signals is compared. As a result, if the bits do not match, it means that an abnormality has occurred in the transmission memory section 2 or the multiplexing section 3. A device abnormality in the sending main line system 201 is detected in this way.

次に、受信側本線系401の異常を検出する場合につい
て説明する。受信メモリ部12からn群の低次群PCM
信号が入力されると、送信メモリ部5はこれらの信号を
それぞれ記憶する。記憶された各信号は多重化部6のタ
イミングで同期化してそれぞれ読み出され、多重化部6
に入力される。多重化部6はこれらn群の低次群PCM
信号を1群の高次群PCM信号9に多重化する。ビット
比較部7は多重化部6からのこの1群の高次群PCM信
号9と、受信側本線系401のB −0部10からの1
群の高次群PCM信号14とを比較し、これら2つの信
号の各ビットを照合する。その結果、ビットが不一致と
なった場合は、受信メモリ部12あるいは分離部11に
異常が発生していることになる。
Next, a case will be described in which an abnormality in the receiving side main line system 401 is detected. n groups of low-order group PCMs from the reception memory section 12
When signals are input, the transmission memory section 5 stores these signals respectively. Each stored signal is read out in synchronization with the timing of the multiplexer 6, and the multiplexer 6
is input. The multiplexing unit 6 uses these n groups of low-order group PCMs.
The signals are multiplexed into a group of higher-order group PCM signals 9. The bit comparison section 7 receives this one group of high-order group PCM signals 9 from the multiplexing section 6 and the one from the B-0 section 10 of the receiving side main line system 401.
The higher order group PCM signal 14 of the group is compared and each bit of these two signals is matched. As a result, if the bits do not match, it means that an abnormality has occurred in the receiving memory section 12 or the separating section 11.

受信側本線系401の装置異常はこのようにして検出さ
れる。
A device abnormality in the receiving side main line system 401 is detected in this way.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、第1の多重化部を備え、
複数の低次群PCM信号をこの多重化部により1群の高
次群PCM信号に多重化して出力する装置において、前
記低次群PCM信号を記憶するメモリ部と、このメモリ
部から読み出した前記低次群PCM信号を1群の高次群
PCM信号に多重化する第2の多重化部と、前記第1の
多重化部により多重化された1群の高次群PCM信号と
、前記第2の多重化部により多重化された1群の高次群
PCM信号とを比較し、これら2つの信号の各、ビット
が一致するか否かを検査する比較部とを備え、前記第2
の多重化部によりn群の低次群PCM信号を多重化し、
1群の高次群PCM信号とした後、前記第1の多重化部
からの1群の高次群PCM信号と比較し、ビット照合を
行う。
As explained above, the present invention includes a first multiplexing section,
A device that multiplexes a plurality of low-order group PCM signals into one group of high-order group PCM signals by this multiplexing section and outputs the multiplexed signal includes a memory section that stores the low-order group PCM signals, and a memory section that stores the low-order group PCM signals read from the memory section. a second multiplexing section that multiplexes the group PCM signals into a group of high-order group PCM signals; a group of high-order group PCM signals multiplexed by the first multiplexing section; and the second multiplexing section. a comparison unit that compares one group of multiplexed high-order group PCM signals and checks whether or not the bits of each of these two signals match;
multiplexing n groups of low-order group PCM signals by a multiplexing unit;
After generating one group of high-order group PCM signals, they are compared with one group of high-order group PCM signals from the first multiplexer to perform bit matching.

従って、この信号多重化装置では、多重化される低次群
PCM信号の数nだけビット照合部を設ける必要がなく
、そのため回路規模を小さくでき、低コスト化が可能で
ある。
Therefore, in this signal multiplexing device, there is no need to provide bit collation sections equal to the number n of low-order group PCM signals to be multiplexed, and therefore the circuit scale can be reduced and costs can be reduced.

さらに、低次群でビット照合を行う場合に比べ、ビット
レートが高速であるから、照合に要する時間を短縮でき
、装置障害の早期検出が可能となる。
Furthermore, since the bit rate is faster than when bit matching is performed in a low-order group, the time required for matching can be shortened, and device failures can be detected early.

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

第1図は本発明の一実施例を示すブロック図、第2図は
従来の信号多重化装置を示すブロック図である。 l、10・・・・・B−U部 2.5・・・・・送信メモリ部 3.6・・・・・多重化部 4.13・・・・・U−B部 7・・・・・・・ビット比較部 11・・・・・・・分離部
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional signal multiplexing device. l, 10...B-U section 2.5...Transmission memory section 3.6...Multiplexing section 4.13...U-B section 7... ...Bit comparison section 11 ... Separation section

Claims (1)

【特許請求の範囲】[Claims] (1)第1の多重化部を備え、複数の低次群PCM信号
をこの多重化部により1群の高次群PCM信号に多重化
して出力する装置において、 前記低次群PCM信号を記憶するメモリ部と、このメモ
リ部から読み出した前記低次群PCM信号を1群の高次
群PCM信号に多重化する第2の多重化部と、 前記第1の多重化部により多重化された1群の高次群P
CM信号と、前記第2の多重化部により多重化部された
1群の高次群PCM信号とを比較し、これら2つの信号
の各ビットが一致するか否かを検査する比較部とを備え
たことを特徴とする信号多重化装置。
(1) A device comprising a first multiplexing unit and multiplexing a plurality of low-order group PCM signals into a group of high-order group PCM signals by the multiplexing unit and outputting the same, comprising a memory for storing the low-order group PCM signals. a second multiplexing unit that multiplexes the low-order group PCM signals read from the memory unit into one group of high-order group PCM signals; and one group of high-order group PCM signals multiplexed by the first multiplexing unit. P
a comparison section that compares the CM signal and one group of high-order group PCM signals multiplexed by the second multiplexing section, and tests whether each bit of these two signals matches. A signal multiplexing device characterized by:
JP6786687A 1987-03-24 1987-03-24 Signal multiplexzation equipment Pending JPS63234743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6786687A JPS63234743A (en) 1987-03-24 1987-03-24 Signal multiplexzation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6786687A JPS63234743A (en) 1987-03-24 1987-03-24 Signal multiplexzation equipment

Publications (1)

Publication Number Publication Date
JPS63234743A true JPS63234743A (en) 1988-09-30

Family

ID=13357274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6786687A Pending JPS63234743A (en) 1987-03-24 1987-03-24 Signal multiplexzation equipment

Country Status (1)

Country Link
JP (1) JPS63234743A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107226A (en) * 1989-09-20 1991-05-07 Fujitsu Denso Ltd Monitor for multiplex system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107226A (en) * 1989-09-20 1991-05-07 Fujitsu Denso Ltd Monitor for multiplex system

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