Introduction
The Rockwell Collins CMU-900 is a state-of-the-art communication management unit designed to meet the demands of the current CNS/ATM environment. It is part of the Series 900 line of avionics and is recognized for its advanced data link capabilities, offering fast and flexible communication management.

Specifications
The CMU-900 is ARINC 758 compliant and interfaces with various aircraft systems such as ACMS/DFDAU, SATCOM, VHF, HFDL, and FMS. It supports both current and future airspace operations, including AOC and ATC data link implementations like FANS, ADS-C, AFN, CPDLC, and ATN CPDLC. The unit weighs a maximum of 12 lbs (5.5 kg) and operates on primary 115 V ac, 400 Hz power, with an optional 28 V dc. It is environmentally qualified under RTCA DO-160C standards.

Capabilities
The CMU-900 provides multiple air/ground protocols, including Plain Old ACARS (POA), AOA/VDL Mode 2, and ATN. It supports encryption and compression for secure communication. The unit is Boeing FANS-1 AEIT qualified and certified via TC and STC on most aircraft types. It includes certified core software and user-modifiable AOC applications without certification impact.

Components
The CMU-900 consists of a hardware platform, core software, AOC application function, and optional ATN ATC datalink functions. Updates can be made using an ARINC 615 data loader.

ATC Datalink Capabilities
The CMU-900's ATN Router and CPDLC applications are certified, with over 200 aircraft currently utilizing its ATN CPDLC capability. It supports FANS operations and interfaces with all physical layers for worldwide operations.

Additional Services
Rockwell Collins offers a full suite of connectivity services through its acquisition of ARINC. These services aim to enhance operational efficiency, including shorter aircraft turnaround times, more accurate reporting, and reduced maintenance costs.

Contact Information
For more information, contact Rockwell Collins at 400 Collins Road NE, Cedar Rapids, Iowa 52498, or via email at [email protected]. Additional details can be found on their website.