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System description
2 SYSTEM DESCRIPTION
The functional elements of the system are pictures in Fig. 3.
FIG. 3 FUNCTIONAL ELEMENTS OF THE MAGIC DC7/AC1 XIP
2.1 Functionality
The MAGIC DC7/AC1 XIP system incorporates an ISDN telephone interface
as well as an X.21 network interface and an additional LAN interface. The
operating mode can be configured by software. If the ISDN interface is used,
depending on the operating mode two independent channels are available
that can be used independently from each other.
The complete signal processing is taken over by two digital signal processors.
In this way the following functions are realized.
DSP1:
– G.711 Audio encoding and decoding
– G.722 Audio encoding and decoding
– ISO/MPEG Layer II/III Decoder
– digital Audio router, digital Audio mixer (optional)
– Signalling management (J.52, proprietary modes)
– Control of the complete system (Keypad, display, relays, TTL, RS232)
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