Zyxel-communications Multi-service Access Platform MSAP2000 Manuel d'utilisateur Page 222

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9. Network Management System (NMS) Functions
MSAP2000 Technical Manual V3.0 9-8
Loopback Testing
All RT Modules support Channel Loopback functions. Operators may
activate or deactivate Channel Loopback, via the OptiCore or LCT
Interface. Loopback Testing proceeds by two directions: Facility
(external) Loopback, and Terminal (internal) Loopback. The
following diagram shows Loopback Testing directions:
Protection Switch
Operators can enforce the OIM Module to activate manual switching
and Ring-type protection switching for optical fibers, via OptiCore
NMS and LCT Interface.
Pattern Test
MSAP2000 supports Test Patterns such as Fix pattern (Byte-base),
2
11
-1, and 2
15
-1, to provide Module Testing for digital leased lines.
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