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NTBK50 2.0 Mb PRI card
Contents This section contains information on the following topics:
"Introduction" (page 967)
"Physical description" (page 968)
"Functional description" (page 973)
"Architecture" (page 975)
IntroductionThe NTBK50 2.0 Mb PRI card provides a 2.0 Mb PRI interface. It supports
the NTAK20clock controller daughterboard and either the NTAK93
D-channel interface or the NTBK51 Downloadable D-channel handler.
The NTAK93DCHI daughterboard provides identical performance to the
on-board NTAK79DCHI. The NTBK51 DDCH daughterboard provides
support for protocols based on the MSDL platform.
Youcan install this card in slots 1 through 4 in the Media Gateway. The card
is not supported in the Media Gateway Expansion.
ATTENTION
IMPORTANT!
Each Media Gatewaythat has a digital trunk must clock the clock controller to
an external reference clock.
Note: Clocking slips can occur between systems that are clocked from
different Central Offices (COs), if the COs are not synchronized. The
slips can degrade voice quality.
The NTBK50 card provides a 2Mb PRI interface and is installed in the
main and IP expansion cabinets. The NTBK50 supports the NTAK20
clock controller daughterboard and either the NTAK93D-Channel interface
or the NTBK51 Downloadable D-Channel handler. The NTAK93 DCHI
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.