System Description; Functionality - RTS SIP-ISDN Hardware & Software Manual

The functional elements of the system are pictured in Fig. 2.
FIG. 2
Keypad Keypad
Display Display
RS232 RS232
6 TTL I/O 6 TTL I/O
2 Relays 2 Relays
CLK In CLK In
CLK Out CLK Out
Channel 1/ Channel 1/
Channel 2 Channel 2
Channel 1 Channel 1
Channel 2 Channel 2
2.1

Functionality

The RTS SIP-ISDN System incorporates an ISDN telephone interface and a LAN inter-
face. The complete signal processing is taken over by a digital signal processors. In this
way the following functions are realised:
DSP1:
– G.711 Audio encoding and decoding
– G.722 Audio encoding and decoding
– Signalising management
– Control of the complete system (Keypad, display, relays, TTL, RS232)
Via the Audio channels 1 & 2 the Audio signal is inserted or output analogue or digitally.
If the digital AES/EBU Audio interface is used, two separate Sample Rate Converters are
available for automatic clock synchronisation. For external clocking a clock input and a
clock output are available
The configuration and operation can be primarily carried out via the front keypad and the
illuminated display.
Configuration and control is especially comfortable with the RTS SIP-ISDN Windows
PC Software which is included in delivery and which communicates with the system via
the RS232 or LAN interface.
2 S Y S T E M D E S C R I P T I O N
FUNCTIONAL ELEMENTS RTS SIP-ISDN
SRC SRC
DSP DSP
Input/ Input/
Output Output
• G.711 Codec • G.711 Codec
• G.722 Codec • G.722 Codec
• Management • Management
A A
D D
LAN LAN
LAN LAN
Controller Controller
ISDN (BRI) ISDN (BRI)
ISDN ISDN
Controller Controller
13