NEC Electra Elite IPK II Programming Manual page 277

Document Revision 1
Feature Cross Reference
J
2 - 242
Conditions
When the trunk type is set to a 3 (DID) in 22-02-01, the DID Transfer Destination
H
for each DID feature is not supported. This feature is only supported for DID
trunks when assigned as VRS.
Direct Inward Dialing (DID)
Electra Elite IPK II
Program 22 : Incoming Call Setup