The terminologies are defined below.
Terminology |
Meaning |
|---|---|
MAC port |
Media Access Control, that is a media access control port, such as the 8 ports of ET1. |
Manual switch |
When the protection channel is efficient and there is no higher-level switching request, this mode switches the service from the working channel to the protection channel, thus testing whether network still has the protection capability. |
Masked status |
Under suppression status, NE will not monitor the corresponding alarm conditions and the alarm will not occur even when the alarm conditions are met. |
MP port |
A logical port which achieves transparent transmission of the MAC service over SDH, for example, the 16 ports of the ET1. |
MS node |
The ALC node configured with the MS2 board and used by the ALC link, which is unique on the ALC link. |
Multiplex section protection |
The nodes online achieve protection switching through the K1 and K2 bytes in the multiplex section, including linear 1+1 MS protection switching link, linear 1:n MS protection switching link, dedicated MS protection ring and shared MS protection ring. |
Multi-trail protection service |
It is a protection mode in which multiple services with different trails but with the same sink protect an important service with the same sink. This protection mode supports protecting important services through non-optical network trails, such as microwave. It presently supports that three protection trails protect one service trail. At the trail sink, it monitors the quality of protection trail signals and protects important services according to the priority and the signal quality. The most significant characteristic of the multi-service protection trail is: Flexible networking. It supports either the protection trail passing the line board or the protection trail passing the tributary board. It supports the trails other than the optical ones, for example, a microwave trail, to provide protection. |