Home > Application > WDM / OTN Protection


WDM / OTN Protection

Optical Transport Network (OTN): Linear Protection      ITU-T G.873.1
This Recommendation defines the APS protocol and protection switching operation for the linear protection schemes for the Optical Transport Network.
Protection switching will occur based on the detection of certain defects on the transport entities (working and protection) within the protected domain. How these defects are detected is the subject of the equipment Recommendations (e.g., ITU-T Recs G.806 and G.798).
The following architectures are possible:
1+1 – In a 1+1 architecture, a single normal traffic signal is protected by a single protection entity.
The bridge at the head end is permanent. Switching occurs entirely at the tail end.
1:N – In a 1:n architecture, 1 or more normal traffic signal(s) are protected by a single protection entity. The bridge at the head end is not established until a protection switch is required. In the case where n > 1, it cannot be known until a defect is detected on one of the protected signals even which of the normal traffic signals should be bridged onto the protection entity.

Click Product Name view details
Latest Product
The latest product release!
10G SR/SW Quad port fiber bypass module
It is design expressly for Intrusion Prevention System (IPS) provides complete visibility to network traffic.
Learn more >>