Verilink AS2000: The Basics (880-502981-001) Product Manual - Manual (Page 23)

System Information
Verilink Access System 2000: The Basics 2-7
Integrated
DSU/CSU Modules
Integrated DSU/CSU modules (IDCSUs) work only with the DSU
located on the module. Data from a standalone DSU cannot be
multiplexed into the same data stream with an IDCSU.
Connector
Interface Modules
(CIMs)
Connector Interface Modules (CIMs or rear connector modules)
provide different physical port configurations for the AS2000. The
CIM plugs into the back of a shelf unit and mates with the
application module. If port requirements change, only the CIM
requires replacement. The CIMs provide the following major
functions:
• CSU to network and equipment connection
• SLIP and Ethernet interfaces
• External timing interface
Controller Modules Controller modules provide a single access point for configuring
and monitoring all node modules. All controller modules have a
Craft port (ASCII interface) to manage module configurations.
Verilink’s Node Manager software can operate with any controller
module. The SCC and NCM modules include an embedded SNMP
agent.
Figure 2-5 illustrates the role of a node controller within a
multi-node environment.
Figure 2-5 Multinode Management
System Node 1
System Node 2
Node Manager or
SNMP Mgr (MOM) or
AM2000
ASCII Terminal
Up to 52 Units
(30 with NCC)
Up to 52 Units
(30 with NCC)
RS-232 Daisy-
chain Cable
Node
Controller
NCM
or
SCC
or
NCC
TAC
or
DIU
ACP-based
(NCM Only)
~
ACP-based
(NCM Only)
Node
Controller
NCM
or
SCC
or
NCC
TAC
or
DIU
~