ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 52)

4. System Components
MSAP2000 Technical Manual V3.0 4-1
4. System Components
4.1. Overview MSAP is a next generation Broadband Loop Carrier (BLC),
composed of a Central Office Terminal (COT) and a Remote
Terminal (RT). The COT is installed in the Central Exchange
Station, and uses transmission media such as STM-1/4 optic
fibers, E1 circuits, or microwave, to connect to the RT installed in
metropolitan, suburban or remote areas. The subscriber may
also connect to the RT via GSH-R devices.
MSAP2000 uses advanced semiconductor devices and
microprocessors to enhance circuit density, and to reduce space
usage, making MSAP2000 ideal for installation in compact
metropolitan exchange stations, or in constricted outdoor cabinets.
MSAP2000 provides the following modular interfaces:
„ Voice Service Modules: FXS/FXO, Payphone, 2W/4W E&M,
ISDN BRI/PRI
„ Digital Leased Lines: NX64 Kbps, E1, G.SHDSL
„ DSL Services: ADSL G.dmt, G.lite, ADSL2/2+
„ Ethernet Module: ETH, ESM
„ IDLC Module: V5P(V5.1/V5.2 Interface)
„ Ethernet over SDH Module: EoSM
„ Trunk Interface Module: OIM(STM-1), QE1M(Quad E1),
GbE(Gigabit Ethernet)
„ VoIP Module: PVM
„ Common Modules: Power supply modules (RtPSM, CoPSM),
Main Processing Modules(MPM), Expansion Modules(ELM,
EPM)
„ Testing Module: Metallic Line Testing Module (MLTM)
„ All of MSAP2000’s modules are designed as plug-in cards with
ejectors for convenient removal. The modules are built-in into
the System, and can be hot-plugged and unplugged, without
interference to the System’s operation.