Ships and marine technology. Navigation and ship operations. Guidelines for onboard telephone equipment
47.020.70 - Navigation and control equipment
This document provides general and specific recommendations
related to the quality of communication, connectivity,
installation, performance and maintenance of onboard telephone
equipment, including automatic telephones, common battery
telephones, battery-less telephones and sound-powered
It also specifies requirements for the related performance tests
(shop tests and onsite tests) and for the maintenance tests.
It is not applicable to digital telephones, LAN (VoIP)
telephones, and wireless telephones.
These telephones are excluded because they were under
development during the elaboration of this document so that their
specifications remained to be determined.
Table 1 further illustrates the
applicability of this document.
X: covered in this document.
n.a.: not applicable.
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