Basic Node
3.9.5 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
7.3 on page 128, plus an external optical combiner/splitter, see Figure 49 on
page 51, 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 61.
9358
Figure 49 Optical s
plitter/combiner
51
4/1555-CSH 109 32/1-V1 Uen B 2007-09-14
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