Nortel Networks Circuit Card - Manual (Page 745)

Page 745 of 906
Circuit Card Description and Installation
762
NTAK79 2.0 Mb PRI card
Contents
This section contains information on the following topics:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 745
Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 746
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 751
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 752
Introduction
The NTAK79 2.0 Mb Primary Rate Interface (PRI) card provides a 2.0 Mb
interface and an onboard D-channel handler (DCH). The NTAK79 card also
includes an onboard clock controller (equivalent to the NTAK20
Clock Controller) that can be manually switched into or out of service.
The NTAK79 card does not support the NTBK51 downloadable D-channel
handler daughterboard.
You can install this card in slots 1 through 4 in the MG 1000S. The card is not
supported in the MG 1000S Expansion.
Note: Up to three four trunk cards are supported in each MG 1000S.