AVT MAGIC ISDN, Описание аппаратуры

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C O N T E N T
C O N T E N T
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