Fixed Dialing Number (FDN) is a service mode of SIM, where outgoing calls are allowed to only a set of phone numbers. These numbers are added to the FDN list.

External links

• What Is An FDN? at Axiom Telecom

History In 1997 Axiom Telecom was founded by an Emarati entrepreneur Faisal Al Bannai with four employees at the start of its operations

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