Basic Node
3.10.5 Enhanced Equipment Protection
Enhanced Equipment Protection (EEP) (optical) protects the STM-1 line on
MMU2 E/F 155. Through a Small Form Factor Pluggable (SFP), see Section
6.3 on page 130, plus an external optical combiner/splitter, see Figure 49 on
page 59, the STM-1 input/output are protected; while one MMU Tx laser is
transmitting, the other one must be switched off (Laser Shut Down). See also
MMU2 F 155 in Section 4.2 on page 69.
9358
Figure 49 Optical splitter/combiner
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