The ICG NxtLink Series ICS-400 Iridium Communications System incorporates four Iridium transceivers with an internal CTU, providing a standalone comprehensive communications system with connectivity to other aircraft systems. The ICS-400 permits connections of conventional telephony devices or legacy CTU systems through either standard 2-Wire “Tip and Ring” circuits, 4-Wire audio connections or via CEPT-E1 digital circuits.
CTU features include intercom calling, call transfer, conferencing, follow-on dialing and voice prompts. Designed
into a 4 MCU Line Replaceable Unit (LRU), the device can be installed on any
size of aircraft as the sole communications facility or as an additional/restorative
The ICS-400 also provides ARINC 429 connections and
a dedicated Short Burst Data (SBD) modem for ACARS services.
The device is
simple to operate offering standard dialing conventions and PABX operations
with familiar call progress tones. It is the ideal solution for aircraft requiring up to
10 telephony connections and seamless global communications services without
the inconveniences of hand-offs or no-service areas.