Avaya Nortel Communication Server 1000 Reference page 15

Software interface circuit.................................................................................................................. 546
DPNSS/DCHI Port............................................................................................................................ 546
D-Port - SDTI/PRI interface.............................................................................................................. 546
Chapter 32: NTBK22 MISP card.........................................................................................
Contents.................................................................................................................................................... 547
Introduction............................................................................................................................................... 547
Physical description.................................................................................................................................. 547
Functional description............................................................................................................................... 548
Micro Processing Unit (MPU)........................................................................................................... 548
High-Level Data Link Controller (HDLC).......................................................................................... 548
CPU to MISP bus interface.............................................................................................................. 549
MISP network bus interface............................................................................................................. 549
Power consumption.......................................................................................................................... 549
Chapter 33: NTBK50 2.0 Mb PRI card................................................................................
Contents.................................................................................................................................................... 551
Introduction............................................................................................................................................... 551
Physical description.................................................................................................................................. 552
Power requirements......................................................................................................................... 553
Environment..................................................................................................................................... 553
Functional description............................................................................................................................... 554
Architecture............................................................................................................................................... 554
DS-30X interface.............................................................................................................................. 555
Signaling interface............................................................................................................................ 556
Carrier interface................................................................................................................................ 556
Carrier grounding............................................................................................................................. 556
CEPT transceiver............................................................................................................................. 557
Slip control........................................................................................................................................ 558
D-channel support interface............................................................................................................. 558
Card-LAN interface........................................................................................................................... 558
Chapter 34: NTBK51 Downloadable D-channel Handler daughterboard.......................
Contents.................................................................................................................................................... 561
Introduction............................................................................................................................................... 561
Physical description.................................................................................................................................. 562
Functional description............................................................................................................................... 562
Microprocessors............................................................................................................................... 563
Main memory.................................................................................................................................... 563
Shared memory................................................................................................................................ 563
EPROM memory.............................................................................................................................. 563
Flash EPROM memory.................................................................................................................... 563
EEPROM memory............................................................................................................................ 564
Serial communication controller....................................................................................................... 564
Sanity timer...................................................................................................................................... 564
Bus timer.......................................................................................................................................... 564
Download operation.................................................................................................................................. 564
System initialization.......................................................................................................................... 565
Card enabling or application enabling.............................................................................................. 565
Card reset......................................................................................................................................... 565
Circuit Card Reference
547
551
561
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