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CMX218S1

ISDN Data/Telephony Protocol Engine

CML Microsystems Plc 

ISDN Data and Telephony Protocol Engine (no X.25)

Section

CONTENTS

Page

1.0 Features and Applications .........................................................................1

1.1 Brief Description.........................................................................................1

1.2 Block Diagram ............................................................................................4

1.3 Signal List ...................................................................................................5

1.4 External Components.................................................................................8

1.5 General Description....................................................................................9

1.5.1 Glossary ....................................................................................10

1.5.2 Initialisation...............................................................................11

1.5.3 ISDN Interface............................................................................11

1.5.3.1 Activation.....................................................................11

1.5.3.2 De-activation or Line Disconnection .............................11

1.5.3.3 Line Failure Detection ..................................................11

1.5.3.4 Incoming Calls .............................................................12

1.5.3.5 Multiple Subscriber Numbering.....................................12

1.5.3.6 Channel Mapping.........................................................12

1.5.4 POTS Configuration..................................................................13

1.5.4.1 Configuration and Control via DTMF Keypad................13

1.5.5 POTS Operation ........................................................................15

1.5.5.1 Keypad Operation ........................................................15

1.5.5.2 Incoming POTS Calls...................................................15

1.5.5.3 Outgoing POTS Calls...................................................15

1.5.5.4 Connected Calls...........................................................16

1.5.5.5 Call Clearing ................................................................16

1.5.6 Data Configuration....................................................................17

1.5.6.1 Hayes Command Set...................................................17

1.5.6.2 Hayes Register Set ......................................................22

1.5.6.2.1 V.120 Parameters .....................................................22

1.5.6.2.2 Basic Configuration Parameters ................................23

1.5.7 Data Operation ..........................................................................24

1.5.7.1 Incoming B-Channel Data Calls....................................24

1.5.7.2 Outgoing B-Channel Data Calls....................................24

1.5.7.3 Connected Calls...........................................................24

1.5.7.4 Call Clearing ................................................................24

1.5.8 Application Programmer's Interface ........................................25

1.5.9 Hardware Description ...............................................................26

1.5.9.1 LED Status Indicators (LED1 to LED9, and ILFI)..........26

1.6 Application Notes .....................................................................................27

1.6.1 General ......................................................................................27

1.6.2 Approvals ..................................................................................27

CMX218

© 1999 Consumer Microcircuits Limited

2

© 1999 Chiron Technology Limited

D/218/1

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