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DTA-SDH/155
Operating Manual
Shineway Technologies, Inc.
15
Figure 2-18 Clock Setup
2.3. LED Interface
LED interface comprises SDH interface and TCM interface, of which SDH interface includes all
alarms and errors of PDH.
2.3.1. SDH Interface
For the interface, see Figure 2-19 as follows:
Figure 2-19 LED Indicating Diagram
LINE: line-related
LOS: loss of signal on line side
AIS: alarm indicating signal on line side
LOL: loss of locking of line clock