Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 38)

Access Manager Overview
1-8 Access Manager 2000 User Manual
■ Access System 2000 Accesses up to two multiline shelves
containing up to 13 circuit elements per shelf (NCC 2020, TA
2010, DIU 2130, DIU 2140, and TIU 2850). Access Manager
connects to the master NCC 2020, a plug-in module which is also a
circuit element. Access System 2000 is also available in a dual-line
configuration; see previous page under Dual-Line Nodes.
Only AS2000 and ConnecT1 Plus nodes can be daisy-chained. The
master NCC 2020 or CCC 1020 normally occupies the first slot of the
first shelf in each type of node. Refer to the Access System 2000 and
ConnecT1 Plus manuals for more information about the shelves, their
controller modules, and circuit elements.
Note: You cannot mix AS2000 hardware and ConnecT1 Plus hardware
on the same shelf
A circuit element is a single module of the parent node to which Access
Manager is connected. If the parent node is a single-line module, such as
a 551VST List 2 CSU, it has only one circuit element. If the parent node
is a multiline module, such as an AS2000 or ConnecT1 Plus, a circuit
element is a plug-in module in one of the shelves controlled by the node.
This module is identified by the parent node’ Node Name and a [shelf,
slot] index. The types of circuit elements are:
■
Single-Line Circuit Elements
■
Dual-Line and Multiline Circuit Elements
Single-Line Circuit Elements
The single-line circuit elements with which Access Manager interfaces
are as follows:
551VST List 1/A CSU Includes the 551VST List 1 and 551VST List 1/A
CSUs.
551VST List 1/B CSU Single-line CSU.
551VST List 2 CSU The Verilink single-line CSU has the same hardware
as the 551VST List 1/B. It also has these additional
features: automatic alarm reporting, 9600 baud direct
connection, and support for the Hayes
 modem protocol.
Circuit Element