50 CFR § 600.1502 - Communications functionality.
(a) Unless otherwise specified, this subsection applies to all VMS units. Units that can operate as both an EMTU and EMTU-C must meet the requirements for both an EMTU and an EMTU-C in order to gain type-approval as both. The VMS unit must:
(1) Be able to transmit all automatically-generated position reports.
(2) Provide visible or audible alarms onboard the vessel to indicate malfunctioning of the VMS unit.
(3) Be able to disable non-essential alarms in non-Global Maritime Distress and Safety System (GMDSS) installations.
(4) EMTU/EMTU-Cs must be able to send communications that function uniformly throughout the geographic area(s) covered by the type-approval, except an EMTU-C only needs to be capable of transmission and reception when in the range of a cellular network.
(5) EMTU/EMTU-Cs must have two-way communications between the unit and authorized entities, via MCS, or be able to connect to a device that has two-way communications.
(6) EMTU/EMTU-Cs must be able to run or to connect to a dedicated message terminal and display component that can run software and/or applications that send and receive electronic forms and internet email messages for the purpose of complying with VMS reporting requirements in Federal fisheries. Depending on the reporting requirements for the fishery(s) in which the requester is seeking type-approval, an EMTU-C type-approval may not require the inclusion of a dedicated message terminal and display component at the time of approval, but the capability to support such a component must be shown.
(7) Have messaging and communications mechanisms that are completely compatible with NMFS vessel monitoring and surveillance software.
(b) In addition, messages and communications from a VMS unit must be able to be parsed out to enable clear billing of costs to the government and to the owner of a vessel or EMTU/EMTU-C, when necessary. Also, the costs associated with position reporting and the costs associated with other communications (for example, personal email or communications/ reports to non-NMFS Office of Law Enforcement entities) must be parsed out and billed to separate parties, as appropriate.