4.7.1 The communication links for mobile-satellite
data communication systems should be connectable to the public data
communication network in accordance with relevant ITU-T Recommendations.
The system should provide the capability to transfer the identity
of the calling subscriber to the called subscriber. Maritime distress
alerts/calls and distress messages should include the ship identity
and the earth station identity, or other means of identifying the
point of access to the satellite network.
4.7.2 Satellite systems using the public switched
network for routeing distress alerts/calls and distress traffic to
and from MRCCs should, on receipt of ship-to-shore or shore-to-ship
distress alerts/calls or distress traffic, immediately attempt to
establish the connection necessary for transfer of the distress alert
or distress message.