Beta Draft Confidential
Configuring ATM PVCs
Configuring Frame Relay-to-ATM Interworking Circuits
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0510-65
EFCI Mapping
(ATM endpoint 
only) 
Select one of the following options:
0 – Ignores EFCI to FECN bit mapping. 
fr fecn – (default) Maps the EFCI bit on the ATM endpoint to the 
frame relay FECN bit. 
Note: For FRF.5, EFCI is always mapped to FECN for 
ATM-to-Frame Relay Interworking PVCs; EFCI is set to zero (0) 
for Frame Relay-to-ATM Interworking PVCs.
Table 10-13. Add PVC: User Preference Tab Fields (Continued)
Field Action/Description