ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 53)

4. System Components
MSAP2000 Technical Manual V3.0 4-2
4.2. Terminal
Central Office
Terminal (COT)
Each network has only one Central Office Terminal (COT), and all
data from the various remote terminals will be converged onto this
COT. The various interfaces within the COT will then process
the received data, and transmit it to the corresponding devices.
MSAP2000’s Timeslot Division and Cross-Connect functions will
not only efficiently utilize bandwidth, but will also reduce the need
for excess access ports. One MSAP2000 COT provides 1890
lines of 1:1 voice services, and a total bandwidth of 1 Gbps can be
achieved with use of GbE.
Remote Terminal
(RT)
Each MSAP2000 supports up to 16 RTs; each RT can be installed
in proximity to the subscriber, to cut down on loop distance.
MSAP2000’s capacity can be expanded by shelf-stacking, and its
COT/RT can provided a range of system capacities from 16, 30,
60, 120, 240, 360, 480, 600, 720, 960, to 1890 lines. The
maximum quantity of lines supported by the RT will only equal, or
be less than the quantity of lines supported by the COT. RTs
may be either housed in cabinets, or installed upon 19-inch,
23-inch, or any size rack which conform to ETSI ETR 300 119
standards. Based on different subscriber requirements, rack
placement can be ground-based, hung, or wall-mounted.
Node
The MSAP2000 use the common shelf and each shelf can be
configured as the role of COT or RT by modifying the DIP switch
located at the rear side of the backplane. Detail setting can be
found on section 12.2.
When using the OptiCore Network Management System to
monitor MSAP2000 terminals, each terminal is termed a “node”
within the network topology.