JPS62201555U - - Google Patents
Info
- Publication number
- JPS62201555U JPS62201555U JP8855386U JP8855386U JPS62201555U JP S62201555 U JPS62201555 U JP S62201555U JP 8855386 U JP8855386 U JP 8855386U JP 8855386 U JP8855386 U JP 8855386U JP S62201555 U JPS62201555 U JP S62201555U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- signal
- tone
- detected
- circuit outputs
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 11
- 230000011664 signaling Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例を含む受信側インバ
ンドリンガのブロツク図、第２図は第１図の一実
施例の動作を説明するためのタイミングチヤート
、第３図は従来のインバンドリンガを用いた交換
システムのブロツク図、第４図は従来のインバン
ドリンガの動作を説明するためのタイミングチヤ
ートである。
１００……インバンドリンガ、１０２……トー
ン検出回路、１０３……ゲート回路、１０４……
第１次検出回路、１０５……第２次検出回路。
Fig. 1 is a block diagram of a receiving side in-band ringer including an embodiment of the present invention, Fig. 2 is a timing chart for explaining the operation of the embodiment of Fig. 1, and Fig. 3 is a conventional in-band ringer. FIG. 4, which is a block diagram of an exchange system using a ringer, is a timing chart for explaining the operation of a conventional in-band ringer. 100... In-band ringer, 102... Tone detection circuit, 103... Gate circuit, 104...
Primary detection circuit, 105...Second detection circuit.
Claims (1)
一チヤネルにて伝送する交換システムにおいて、
受信信号からトーンを検出するトーン検出回路と
、このトーン検出回路により第１の所定時間以上
前記トーンが検出されないときオンの信号を出力
し、前記トーン検出回路により第２の所定時間以
上前記トーンが検出されたときオフの信号を出力
する第１次検出回路と、この第１次検出回路の出
力信号が第３の所定時間以上オフ状態となつたと
きのみオフのシグナリング信号を出力する第２次
検出回路とを具備することを特徴とするシグナリ
ング信号検出装置。 In an exchange system that transmits exchange signaling signals on the same channel as voice band signals,
a tone detection circuit that detects a tone from a received signal; the tone detection circuit outputs an ON signal when the tone is not detected for a first predetermined period of time; and the tone detection circuit outputs an ON signal when the tone is not detected for a second predetermined period of time or more; A primary detection circuit outputs an OFF signal when detected, and a secondary detection circuit outputs an OFF signaling signal only when the output signal of the primary detection circuit is in an OFF state for a third predetermined period of time or more. 1. A signaling signal detection device comprising: a detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8855386U JPS62201555U (en) | 1986-06-12 | 1986-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8855386U JPS62201555U (en) | 1986-06-12 | 1986-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62201555U true JPS62201555U (en) | 1987-12-22 |
Family
ID=30946750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8855386U Pending JPS62201555U (en) | 1986-06-12 | 1986-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201555U (en) |
-
1986
- 1986-06-12 JP JP8855386U patent/JPS62201555U/ja active Pending
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