Nortel Networks NN43001-301 manual Mb PRI cards, Ddch

2582.0 Mb PRI implementation

Circuit card	Description
NTAK79	2.0 Mb PRI circuit card.
	Supports an onboard clock controller and an
	onboard D-channel handler interface.
NTAK20	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.
NTAK93	D-channel-handler interface (DCHI)
	daughterboard.
	Connects to the NTBK50 PRI card.
NTBK51	Downloadable D-channel daughterboard
	(DDCH).
	Connects to the NTBK50 PRI card.

Cables

One of the following cables is required for a PRI connection:

•CEPT Cable - NTBK05DA (120 1/2 twisted pair—6.15 m length), or

•CEPT Cable - NTBK05CA (75 1/2 Ensure the document title is correct. m length)

Hardware description

2.0 Mb PRI cards

Two PRI cards are available on the system:

•NTAK79 2.0 Mb PRI card

•NTBK50 2.0 Mb PRI card

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

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301 02.03 Standard

Release 5.5 7 December 2007

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