Broadcasting With DUAL

All countries have amateur regulations that enforce the periodic broadcast of amateur callsigns. This is satisfied in AX.25 by using callsigns as link addresses. DUAL, however, allows other forms of link addresses. Therefore, a mechanism must be provided to periodically broadcast the node's amateur callsign. This section explains how DUAL satisfies this regulation by using PR_BCAST protocol Id.

• Broadcasting Link Addresses - PR_BCAST/AD_CALL
  • AD_CALL
• Broadcasting Textual Information - PR_BCAST/AD_BEACON
  • AD_BEACON
• Callsign Policy