Protection
All types of protection schemes implemented in the FOX51x or FOX61x platforms are supported:
• End-to-end 1+1 path protection,
• 1+1 section protection,
• 1+1 multiplex section protection on SDH,
• Linear trail protection on VC-12 layer.
When NP sets up the protection paths, it automatically avoids using the same NE for passing the direct and the protected path.
In case of a failure in the working path the switchover to the protecting path is done in the hardware of the corresponding network elements, which leads to a very short traffic interruption time.