FGD (Feature Group D)

FGD (Feature Group D) is an MF signaling protocol, originally developed to support equal access to long distance services, capable of carrying one or two ten-digit telephone numbers.

Relevant NENA Documents

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• NENA-INF-008, NENA NG9-1-1 Transition Plan Considerations Information Document
• NENA 03-002, NENA Standard for the Implementation of Enhanced MF Signaling, E9-1-1 Tandem to PSAP