Nortel Networks Circuit Card - Manual (Page 773)

Page 773 of 906
Circuit Card Description and Installation
784
NTBK50 2.0 Mb PRI card
Contents
This section contains information on the following topics:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 773
Physical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 774
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 777
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 778
Introduction
The NTBK50 2.0 Mb PRI card provides a 2.0 Mb PRI interface. It supports
the NTAK20 clock controller daughterboard and either the NTAK93
D-channel interface or the NTBK51 Downloadable D-channel handler. The
NTAK93 DCHI daughterboard provides identical performance to the
on-board NTAK79 DCHI. The NTBK51 DDCH daughterboard provides
support for protocols based on the MSDL platform.