Hardware Description - Nortel 1000 Installation And Commissioning Manual

258 2.0 Mb PRI implementation
Circuit card
NTAK79
NTAK20
NTAK93
NTBK51
Cables
One of the following cables is required for a PRI connection:
•
•

Hardware description

2.0 Mb PRI cards
Two PRI cards are available on the system:
•
•
The difference between the two PRI cards is that the NTBK50, when
equipped with the NTBK51 D-channel daughterboard, can download
software onto the card. This feature is based on the MSDL platform and
Copyright © 2003-2007, Nortel Networks
.
CEPT Cable - NTBK05DA (120
CEPT Cable - NTBK05CA (75
length)
NTAK79 2.0 Mb PRI card
NTBK50 2.0 Mb PRI card
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Description
2.0 Mb PRI circuit card.
Supports an onboard clock controller and an
onboard D-channel handler interface.
Clock-controller daughterboard. The system
supports only one active clock controller per
system or IP expansion cabinet.
Note: Every cabinet or Media Gateway that
contains a digital trunk must contain a clock
controller.
Connects to the NTBK50 PRI card.
D-channel-handler interface (DCHI)
daughterboard.
Connects to the NTBK50 PRI card.
Downloadable D-channel daughterboard
(DDCH).
Connects to the NTBK50 PRI card.
1 / twisted pair—6.15 m length), or
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2