Direct inward system access (DISA)

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Direct inward system access (DISA),

Definition of Direct inward system access (DISA):

  1. Private branch exchange (PBX) feature in which a caller (upon entering a code through a touch-tone phone) gets another dial tone for accessing some or all of the features of the PBX, such as making an overseas call or leaving a voice mail message.

Meaning of Direct inward system access (DISA) & Direct inward system access (DISA) Definition