Nortel Networks Circuit Card 311 - Manual (Page 518)

518 NT8D02 and NTDK16 Digital Line cards
— enabling/disabling of individual units or entire card
— programming of loop interface control circuits for administration of
line interface unit operation
— maintenance diagnostics
The microcontroller also controls the front panel LED when the card is
enabled or disabled by instructions from the NT8D01 controller card.
Card LAN interface
Maintenance data is exchanged with the common equipment Call Server
over a dedicated asynchronous serial network called the Card LAN link.
Maintenance data is exchanged with the common equipment CP over a
dedicated asynchronous serial network called the Card LAN link. The Card
LAN link is described in the section
"Intelligent Peripheral Equipment" (page
21) .
Maintenance data is exchanged with the common equipment Call Processor
over a dedicated asynchronous serial network called the Card LAN link.
Sanity timer
The NT8D02 Digital Line card also contains a sanity timer that resets the
microcontroller if program control is lost. The microcontroller must service
the sanity timer every 1.2 seconds. If the timer is not properly serviced, it
times out and causes the microcontroller to be hardware reset.
The digital line card also contains a sanity timer that resets the
microcontroller if program control is lost. The microcontroller must service
the sanity timer every 1.2 seconds. If the timer is not properly serviced, it
times out and causes the microcontroller to be hardware reset.
The NT8D02 Digital Line Card also contains a sanity timer that resets the
microcontroller if program control is lost. The microcontroller must service
the sanity timer every 1.2 seconds. If the timer is not properly serviced, it
times out and causes the microcontroller to be hardware reset.
Circuit power
The +15 V dc input is regulated down to +10 V dc for use by the digital
line interface circuits. The ±15.0 V dc inputs to the card are used to power
the loop interface circuits.
The +15 V dc input is regulated down to +10 V dc for use by the digital
line interface circuits. The ±15.0 V dc inputs to the card are used to power
the loop interface circuits.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.