Telephone:  1.505.881.6262

Toll Free:  1.866.478.4491

Fax:  1.505.883.1375

Technical Support

If you have a technical support question related to a GRT product, please open a support ticket at: 

If you need to consult an engineer with technical questions on ARINC 818 or HOTLink protocol, applications or architecture, please fill out the form below and one of our design engineers will contact you.