HCI (Host Computer Interface) is an open API protocol that allows an (external) Host PC,Automation software or router control software to manage the audio switching functions and system monitoring features found in ECS./ EHX

Any of the Eclipse matrices including the E-Pico can support HCI. The HCI-API interface has been used widely by many broadcasters in MCRs installations and studios to integrate the control of the Eclipse matrix and other equipment like Video, Audio switchers, mixers & VT machines all onto a single Host PC (on to a single control surface). 

In the Defense & Simulation market, the HCI API has been used widely in all types of tactical trainers and command & control systems

The HCI interface (API) is intended to allow software developers to write code or develop applications which will allow the user to control the Eclipse matrix. 
When a customer orders HCI, Clear-Com provides:

• HCI Reference manual,

• A diskette of C++ library commands

• NetSim (an Engineering test tool for exercising the matrix system using HCI commands)

• Technical support (either one day at the factory with an S/W Dev engineer or 8 hrs telephone support). This allows the customers (or 3rd party automation company) S/W developers to talk to Clear-Com S/W developers to ensure the API is used correctly

See attached for a general overview and list of features that HCI supports. 
Please contact Clear-Com sales for more information about the uses and possible implementation of HCI.