Northern Telecom DMS-100 Series Installation And Maintenance Manual page 21

0
0
0 This chapter provides detailed
0 for the following data units (DUs):
0
0 Desktop DUs
0
0 RS-232C
0
0 NT4X25AA
0 NT4X25AF
0 NT4X25AH
0 NT4X25AN
0 NT4X25AX
0 NT4X25AZ *
0
0
0 *
0 Change kit NT4X25AY (must be ordered separately) upgrades the
0 NT4X25AN DU to the NT4X25AZ DU. Change kit NT4X25DE (must be
0 ordered separately) upgrades the NT4X25AD DU to the NT4X25DF DU.
0 The upgrade consists of Electronic Industries Association (EIA)
0 hardware lead modifications to support data-flow control, and
0 enhancements to NT symbolic keyboard dialing for host computer
0 applications.
0 Rackmount DU Shelves and Power Supplies
0 Descriptions
0 shelves and their associated power supplies
0 These are:
0
0 * NT4X25BH shelf (manufacture discontinued)
0
0 * NT4X2554
0 ture discontinued)
0
0 * NT4X25DH shelf (replaces NT4X25BH shelf, requires NT4X25DK or
0 NT4X25DL power supply - see below)
0
0 * NT4X25DK (provisionable AC to DC power
0 shelf)
0
0 * NT4X25DL
0 shelf)
0
V.35
NT4X25AE
NT4X25AG
NT4X25AK
NT4X25AP
and specifications
AC to DC power supply for NT4X25BH shelf (manufac-
(provisionable DC
descriptions and
Rackmount DUs
RS-232C V.35
NT4X25AD NT4X25AV
NT4X25CH
NT4X25DF *
for the rackmount
are
supply
to DC power supply for NT4X25DH
297-2121-226
VINTAGE 05.01
specifications
data unit
also provided.
for NT4X25DH
3-1