Functional Description - Nortel NT1R20 Description

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Functional description

Figure 73
Integrated services digital line card—block diagram
Network
loop
Front
Multiplex
panel
control
LED
logic
Card
enable
Line
address
553-3001-105 Standard 5.00 June 1999
QPC578 Integrated Services Digital Line Card
Figure 73 shows a block diagram of the major functions contained on the
integrated services digital line card. Each of these functions are described on
the following pages.
Voice
Time compression multiplex
digital line interface units
Time compression multiplex
digital line interface units
Time compression multiplex
digital line interface units
Time compression multiplex
digital line interface units
Ring
Tip
Ring
Tip
Ring
Tip
Ring
Tip
553-6183