Microcontroller
The NT8D02 Digital Line card contains a microcontroller that controls the internal operation of
the card and the serial card LAN link to the controller card. The microcontroller controls the
following:
• reporting to the Call Server through the card LAN link:
- card identification (card type, vintage, and serial number)
- firmware version
- self-test status
- programmed configuration status
• receipt and implementation of card configuration:
- programming of the digital line interfaces
- 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.
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.
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.
NT8D02 and NTDK16 Digital Line cards
356 Circuit Card Reference
July 2011
Summary of Contents for 1000 Series
Page 1: ...Circuit Card Reference Nortel Communication Server 1000 7 0 NN43001 311 04 04 July 2011 ...
Page 20: ...20 Circuit Card Reference July 2011 ...
Page 30: ...Introduction 30 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 116: ...Option settings 116 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 143: ...Figure 25 CP PIV card front Physical description Circuit Card Reference July 2011 143 ...
Page 148: ...NT4N39AA CP Pentium IV Card 148 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 287: ...Figure 86 Clock Controller Option 3 Operation Circuit Card Reference July 2011 287 ...
Page 302: ...NT5K21 XMFC MFE card 302 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 346: ...NT6D80 MSDL card 346 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 353: ...Figure 96 NTDK16 DLC Functional description Circuit Card Reference July 2011 353 ...
Page 461: ...Figure 147 Paging trunk operation Applications Circuit Card Reference July 2011 461 ...
Page 462: ...NT8D15 E and M Trunk card 462 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 500: ...NTAK09 1 5 Mb DTI PRI card 500 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 512: ...NTAK10 2 0 Mb DTI card 512 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 534: ...NTAK79 2 0 Mb PRI card 534 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 550: ...NTBK22 MISP card 550 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 560: ...NTBK50 2 0 Mb PRI card 560 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 595: ...Figure 165 MGC block diagram Introduction Circuit Card Reference July 2011 595 ...
Page 662: ...NTRB21 DTI PRI DCH TMDI card 662 Circuit Card Reference July 2011 Comments infodev avaya com ...
Page 668: ...NTVQ01xx Media Card 668 Circuit Card Reference July 2011 Comments infodev avaya com ...
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