Datenblatt-Suchmaschine für elektronische Bauteile
Selected language     German  ▼
Bauteilbezeichnung
         Beschreibung


HT9020B Datenblatt(Datasheet) 4 Page - Holtek Semiconductor Inc

Teile-Nr. HT9020B
Beschreibung  Call Progress Tone Detector
Download  7 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Hersteller  HOLTEK [Holtek Semiconductor Inc]
Homepage  http://www.holtek.com
Logo 

   
 4 page
background image
Functional Description
The HT9020B call progress tone detector can be used in world wide countries. Below is an illustration of a call progress
tone frequency band, and a table of U.S.A. CPT signal is shown for user reference. Usually, HT9020B must work to-
gether with a microcontroller through software to distinguish correct cadence of CPT to fit any country CPT SPEC re-
quirement for world wide application purposes.
U.S.A. Call Progress Tone Signal Format
Tone
Frequency
Condition
Precision Dial Tone
350Hz+440Hz
Continuous high
Old Dial Tone
120Hz (or 133Hz, ..) +600Hz
Continuous high
Precision Busy Tone
480Hz+620Hz
0.5sec high and 0.5sec low
Old Busy Tone
120Hz+600Hz
0.5sec high and 0.5sec low
Precision Reorder Tone
480Hz+620Hz
0.3sec high and 0.2sec low
Old Reorder Tone
120Hz+600Hz
0.2sec high and 0.3sec low or
0.25sec high and 0.25sec low
Precision Ring-back Tone
440Hz+480Hz
2sec high and 4sec low
Old Ring-back Tone
40Hz (or the others) +420Hz
2sec high and 4sec low
Timing Diagram
HT9020B
Rev. 1.20
4
March 31, 2003
2 0 0 H z
3 0 5 H z
6 4 0 H z
8 0 0 H z
. r e q u e n c y
- 5 0 d B m
R e j e c t e d B a n d
C P T I n - b a n d D e t e c t e d
R e j e c t e d B a n d
L e v e l
0 d B m
- 2 7 d B m
Call progress tone frequency band illustration
S I N
E N V
X 1 , X 2
t R D
t B
t D D
t Q I
t D H
t D L
t S T
E N




Html Pages

1  2  3  4  5  6  7 


Datasheet Download



verwandte Bauteile- Teilenummer

TeilenummerBauteilebeschreibungHtml ViewHersteller
FX633Call Progress Tone Detector 1 2 3 4 5 MoreList of Unclassifed Manufacturers
M-980-023V/5V General Purpose Call Progress Tone Detector 1 2 3 4 5 MoreClare, Inc.
M-982-02Precise Call Progress Tone Detector 1 2 3 4 5 MoreClare, Inc.
MX623Line-Powered Call Progress Tone Detector 1 2 3 4 5 MoreList of Unclassifed Manufacturers
MX633CALL PROCRESS TONE DETECTOR 1 2 3 4 5 MoreMicrosemi Corporation
BU8877Call Progress Tone Decoder for Telephone 1 2 3 List of Unclassifed Manufacturers
M-985-01Precise Call Progress and Special Information Tone Generator 1 2 3 4 5 MoreClare, Inc.

Link URL

War ALLDATASHEET hilfreich?  [ Spenden ]  

Über ALLDATASHEET   |   Werbung   |   Kontakt   |   Privatsphäre und Datenschutz   |   Lesezeichen hinzufügen   |   Linktausch   |   Hersteller
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl