Avaya Nortel Communication Server 1000 Reference page 14

Signal conditioning........................................................................................................................... 519
Sanity timer...................................................................................................................................... 519
Microprocessor................................................................................................................................. 519
External timing interface................................................................................................................... 520
Hardware integrity and regulatory environment............................................................................... 520
Chapter 29: NTAK79 2.0 Mb PRI card................................................................................
Contents.................................................................................................................................................... 521
Introduction............................................................................................................................................... 521
Physical description.................................................................................................................................. 522
NTAK79 switches............................................................................................................................. 523
Power requirements......................................................................................................................... 525
Environment..................................................................................................................................... 525
Functional description............................................................................................................................... 526
Architecture............................................................................................................................................... 526
DS-30X interface.............................................................................................................................. 527
Signaling interface............................................................................................................................ 528
Carrier interface................................................................................................................................ 528
Carrier grounding............................................................................................................................. 528
CEPT transceiver............................................................................................................................. 529
Slip control........................................................................................................................................ 530
D-channel support interface............................................................................................................. 530
Card-LAN interface........................................................................................................................... 531
Clock controller interface.................................................................................................................. 531
Chapter 30: NTDW79AAE5 Universal Digital Trunk card................................................
Contents.................................................................................................................................................... 535
Introduction............................................................................................................................................... 535
Physical description.................................................................................................................................. 539
Power requirements......................................................................................................................... 540
Connectors....................................................................................................................................... 540
LED indicators.................................................................................................................................. 540
Functional description............................................................................................................................... 541
UDT card alarms.............................................................................................................................. 541
Clock reference................................................................................................................................ 542
Feature interactions.......................................................................................................................... 542
Chapter 31: NTAK93 D-channel Handler Interface daughterboard................................
Contents.................................................................................................................................................... 543
Introduction............................................................................................................................................... 543
Physical description.................................................................................................................................. 544
Faceplate LEDs................................................................................................................................ 544
Power consumption.......................................................................................................................... 544
Functional description............................................................................................................................... 544
Microprocessors............................................................................................................................... 545
DMA controller.................................................................................................................................. 545
Random Access Memory (RAM)...................................................................................................... 545
Read Only Memory (ROM)............................................................................................................... 545
LAPD data link/asynchronous controller.......................................................................................... 545
Counter/timer controller.................................................................................................................... 545
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July 2011