In the context of a ship or vessel, these communication systems take on specific maritime roles for operations, safety, and crew connectivity
Classic vs. Virtual PBX
A traditional physical telephone exchange box installed in the ship's rack room. It connects internal analog or digital phones across different cabins, the bridge, the engine room, and the mess hall. It is isolated, highly stable, and doesn't rely on internet data, but it is rigid and hard to update or link with shore numbers.
A modern, software-based or cloud-integrated phone routing system. On a ship, it can run locally via onboard servers and is integrated with satellite broadband. It allows guests and crew members to use IP desk phones, softphones on laptops, or mobile apps to call different cabins or dial straight to land via the ship's satellite link, offering massive flexibility and easier extension management.
Fleet Broadband Communication Systems
A dedicated maritime satellite service using L-band (and often bundled with high-speed Ka-band) designed specifically for commercial ships, cargo vessels, and yachts. It provides continuous, weather-resilient "always-on" internet data and simultaneous voice lines. It is heavily used for operational tasks like submitting noon reports, downloading real-time electronic nautical charts and weather updates, tracking the vessel, managing corporate emails, and providing crew internet hotspots (optional).
Iridium Phones & Terminals
Satellite communication devices that connect directly to the Iridium low-Earth orbit constellation. Unlike regional satellite systems, Iridium guarantees 100% true global coverage, including the poles (crucial for Arctic/Antarctic shipping or high-latitude fishing). On ships, Iridium marine terminals are often used as vital backup communication systems, GMDSS (Global Maritime Distress and Safety System) safety lifelines, or primary voice/data links for smaller vessels and lifeboats where traditional VSAT antennas might lose signal due to extreme rolling or blocked horizons.
