E&M-FGD(Feature Group D) vs FGD-EANA(Exchange Access North American)
The e&m-fgdsetting allows E&M interface connections for PBX trunk lines (tie lines) and telephone equipment to use Feature Group D switched-access service.
FGD-EANA is a Feature Group-D (FGD) signaling protocol of type Exchange Access North American (EANA). This provides certain call services, such as emergency (USA-911) calls.
ds0-group 0 timeslots 1-12 type e&m-fgd
ds0-group 1 timeslots 13-24 type fgd-eana