Glossary C

Cascade

In practice, it may be necessary to transmit the payload bigger than the VC4 capacity (for instance, the GE signal). Currently, the cascaded service provided by the OptiX 10G(Metro 5000) can combine the payloads of multiple successive (4, 8, 16 or 64) AU-4 services and use the same set of higher order path overhead and AU-4 pointer value to form AU4-xC (x=4, 8, 16 or 64), which is multiplexed, cross-connected and transmitted in the network as a single entity.

Charging zone

The time zone between the start time and end time of charging.

Client mode

The client login mode includes single-user login mode and multi-user login mode, and the system defaults the latter.

Concentrated routing Ethernet trail

It means that several SDH end-to-end trails (such as VC12, VC3, VC4, cascade service, etc) transporting Ethernet services have the same server trail.

Configuration data

It refers to the data that configures the NE hardware for coordination between this NE and other NEs in the entire network and operation of specified services. Configuration data is the instruction file of NEs, and it is the key for efficient network running. The typical configuration data includes board configuration, clock configuration and protection relationship.

Current alarm

Current alarm is the alarm that does not end, or has ended but is not acknowledged.

Current performance data

For each performance parameter of each performance monitoring entity, the NE provides two types of registers: (1) 15-minute register: Accumulates the performance event data within 15 minutes; (2)24-hour register: Accumulates the performance event data within 24 hours

Each type of register can be further divided as follows: (1) Current register: The current 15-minute register or current 24-hour register (only one for each) is applied to collect the performance data in the current monitoring period. It changed within the monitor period. (2) History register: The 15-minute history register (16 pieces) or 24-hour history register (6 pieces) is a first-in-first-out queue. If the history registers are full, the register storing the earliest history data will be overwritten. The performance data stored in the current register is called current performance data.

Custom view

The user-defined view is a subset on the Main Topology. Included network entities can be NE, NM, link and sub-network. Generally, the network management personnel need to customize some custom views and select the network entity under their management from the Main Topology.