AVT MAGIC ISDN Mode d’emploi
MAGIC
ISDN
Audio Transmission System
Hardware Description
MAGIC ISDN
AUDIO TRANSMISSION SYSTEM AS PER
ISO/MPEG STANDARD LAYER II/III AND
ITU-RECOMMENDATIONS G.722, G.728
AND G.711
HARDWARE DESCRIPTION
Acknowledgements
LabWindows is a registered trademark
of National Instruments
AVT Audio Video Technologies GmbH
Rathsbergstrasse 17
D-90411 Nuernberg
Telefon (0911) 5271-0
Telefax (0911) 5271-100
Internet: www.avt-nbg.de
Email: info@avt-nbg.de
Printed in Germany, April 1997
AVT Audio Video Technologies
All rights reserved. Reproduction in whole
or in parts is prohibited without the written
consent of the copyright owner.
The information contained in this
publication is accurate to the best of our
knowledge. However, we disclaim any
liability resulting from the use of this
information and reserve the right to make
changes without notice.
Order number 040 7448 339646 (06-00)
HW MAGIC ISDN
CONTENT
CONTENT
1 QUICK INTRODUCTION 11
1.1 Transmission of a stereo signal via 2 ISDN B channels (PC control) 12
1.1.1 Connection of the components 12
1.1.2 Putting into operation 13
1.1.3 Setting up the call 13
1.1.4 General advice on dialing using the PC software 14
1.2 Transmission of a stereo signal via two ISDN B channels 15
1.2.1 Connection of the components 15
1.2.2 Putting into operation 15
1.2.3 Setting up a connection using a stored calling number 16
1.2.4 Setting up a manually dialled call 18
1.2.5 General advice on dialing using the Display and Keypad 18
1.3 Factory settings 20
1.3.1 Interface Unit factory settings 20
1.3.2 Codec factory settings 20
2 SYSTEM DESCRIPTION 21
2.1 General 21
2.2 System concept 22
2.3 Construction of MAGIC ISDN Audio Codec 22
2.3.1 Additional options for transmission at higher data rates 23
2.4 Interface Unit 24
2.5 The ‘Layer II/III Audio Codec ’ 27
2.6 The ‘Layer II/III Audio Decoder’ 28
2.7 The ‘ Audio Layer II/III Analog I’ Board 29
2.8 Example of a MAGIC system connection 30
3 PUTTING THE MAGIC SYSTEM INTO OPERATION 31
3.1 Construction of the MAGIC Audio Codec 31
3.2 Selection of the network interface 32
3.3 Connection to the data network 32
3.4 Applications with MAGIC ISDN and MAGIC Systems 33
3.4.1 Generel Transmisssion applications in different qualities 33
3.4.2 Transmission via an X.21 channel at up to 1920-kbit/s 34
3.4.3 Transmission of an audio signal with the signalling switched off 35
3.4.4 Audio transmission via ISDN 36
3.5 Connection to the mains voltage 37
3.6 Opening the Device 37
3.7 Setting the centre-tap earth for the analogue audio inputs 38
CONTENT
3.8 Switching on the system 38
4 OPERATION WITH THE OPERATOR PANEL 39
4.1 Menu tree 40
4.2 The main menu 41
4.3 Submenus 42
4.4 Entering the commands 43
4.5 Programming example: Storing calling numbers 43
4.6 Programming example: setting the RS232C for control via a PC 45
ANNEX 1 TECHNICAL DATA 49
A1.1 Interface Unit with variable network access 49
A1.2 Audio Codec Layer II / III 50
A1.3 Analogue Unit for Audio Codec Layer II / III 51
A1.4 Power supply 52
A1.5 Dimensions 52
A1.6 Miscellaneous 52
A1.7 Additional features 52
A1.8 Ordering information 53
ANNEX 2 INTERFACES 55
A2.1 Extension Bus 55
A2.2 Audio interfaces 56
A2.2.1 AES/EBU interface 56
A2.2.2 Analogue Audio interface 56
A2.3 Network interfaces 56
A2.3.1 So interfaces 56
A2.3.2 X.21 interfaces 56
A2.4 Sampling clock output 58
A2.5 Data interfaces 58
A2.5.1 HSD interface 58
A2.5.2 LSD interface 58
A2.5.3 Additional Data 59
A2.6 Operator interfaces 59
A2.6.1 RS232C and RS232 AUX interfaces 59
A2.6.2 RS485 bus interface 60
A2.6.3 User I/O interface 60
ANNEX 3 USER I/O INTERFACE APPLICATIONS 63
A3.1 Logic level transfer Mode 63
A3.2 Printer mode 64
CONTENT
ANNEX 4 LIST OF THE ALARMS 65
CONTENT
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