Specifications

MGX 8220 Service Modules 4-11
Frame Service Module
Congestion Indication
Congestion Indication mapping is provided in both directions.
FUNI to ATM Direction
EFCI is set to 0 for every ATM cell generated by the segmentation process.
ATM to FUNI Direction
If the EFCI field in the last ATM cell of a received segmented frame is set to 1, the CN bit in the
FUNI header is set to 1. The two reserve bits (the same positions as C/R and BECN in Frame Relay
header) are always set to 0.