Verilink NCC 2020 (880-503284-001) Product Manual - Manual (Page 10)

Overview
1-2 Verilink NCC 2020 User Manual
• Verilink proprietary management program Access Manager
2000, which operates only under Windows™ 3.1.
• Verilink proprietary management program Node Manager,
which runs under Windows 95™ or NT.
Types of NCC
Node Controllers
Verilink’s NCC family of node controllers includes the following
modules:
• The NCC 2020 is a TAC 2010 T1 CSU with the addition of a
node controller function (documented in this manual).
• The NCC 2130 is a TAC 2130 IDCSU (Integrated T1 CSU/DSU)
with the addition of a node controller function. See the
NCC
2130 User Manual for full details.
Compatible
Modules
Types of application modules which may be managed by the NCC
2020 are:
Table 1-1 NCC Compatible Modules
Module Type Usage
TAC 2010 CSU T1 CSU which may be used as a CSU only (CSU mode), part of a CSU/DSU
(Mux mode) or in a combination of both (Drop & Insert Mode). May be
used with up to 24 DIU 21xx DSU modules to make a data channel bank.
DIU 2130 DSU DSU with two synchronous serial interface ports for connection of Data
Terminal Equipment (DTE). May be used with TAC 2010 (including the TAC
2010 portion of an NCC 2020). Uses a shelf midplane to receive/transmit
data to a CSU module.
DIU 2130/DBU DSU DSU with a single synchronous serial interface port and modified firmware
which uses the second port to switch the DTE data from port 1 to an
external Dial Back-Up device—which must be configured to dial on DTR.
Uses a shelf midplane to receive/transmit data to a CSU module.
DIU 2130
56K/NMS
DSU DSU with two synchronous serial interface ports and support for routing
of individual timeslots, in the “telco cloud”, to remote sites with 56K DDS
circuits. Uses a shelf midplane to receive/transmit data to a CSU module.
DIU 2140 Sub-Rate
Data
Multiplexer,
5 port DSU
DSU with five RS-232 interface ports, each individually selectable for sync
or async data, which are multiplexed into a single timeslot (DS0) of the
associated T1 CSU. Uses a shelf midplane to receive/transmit data to a
CSU module.
TAC 2130 Integrated
DSU/CSU
Standalone (for data purposes) DSU/CSU, supports a single synchronous
serial interface only. Does not not use any midplane bus to transfer data
to any other module.