ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 109)

7. Product Specification
MSAP2000 Technical Manual V3.0 7-2
7.2. Main Components
A complete MSAP2000 System consists of the following components:
Common Shelf
The common shelf is made up of a metal case and a system
backplane. Each shelf offers twenty-two slots for various functional
modules. The slots are numbered starting from the left to the right.
Slots 1~16 are slots for general purpose, and can accommodate any
service Modules.
Slots 17 and 18 are only for Modules that do not require backside
cable outlets, such as OIM/SM1.
Slots 19 and 20 are exclusively for control Modules such as MPM and
EPM.
Slots 21 and 22 are reserved for the Central Office Power Supply
Module (CoPSM) and the Remote Terminal Power Supply Module
(RtPSM).
The rear of MSAP2000’s backplane includes wiring posts, and pins for
electronic interfaces. Please refer to the MSAP2000 Installation
Manual for further detailed specification information.
Common Modules
Common Modules are characterized by the fact that they are
Redundancy Enabled (one shelf can will only accommodate two
redundancy enabled Modules); examples are the CoPSM (Central
Office Power Supply Module), the RtPSM (Remote Terminal Power
Supply Module), MPM (Main Processing Module), EPM (Expansion
Processing Module) ,ELM (Expansion Link Module), MLTM (Metallic
Line Testing Module). The function of Common Modules is to
provide basic power, control functions, and testing functions to
MSAP2000.
Trunk Modules
Trunk Modules are used to connect the different Main Shelves within
the Network. Different trunking methods will result in different
bandwidths, and different trunking modules are required for different
topologies and protection switch modes. MSAP2000 currently offers
GSH (G.SHDSL trunking), QE1M (E1 trunking), OIM/SM1 (STM-1
optical trunking), and SM4 (STM-4 optical trunking). More trunking
methods will subsequently be provided.
Network Modules
(COT Interface
Modules)
MSAP2000’s analog and digital COT interface Modules are used to
provide connection to COT Exchange facilities. MSAP2000 Network
Interface Modules include FXO, FXO-P, V5P, QE1M, LUNT, ETH,
CEoSM, PVM and GbE (used at the Network end).
Service Modules
Service Modules allow MSAP2000 to connect to User end facilities.
Service Modules include: FXS, FXS-P, E&M, QE1M, LULT, GSH,
ETH, REoSM, ESM, and AAM. MSAP2000’s modular design allows
Users to expand their Module interfaces as they grow, at their own
pace.