GTE 政府系统公司组合了美国的 AN/TTC-39、SB-3614,以及欧洲的 RITA 系统设备,为美国陆军战术通信要求提供了移动用户设备(MSE)系统。AN/TTC-39是野战自动数字交换机。SB-3614是标准的自动战术电话交换机,已在美国、加拿大及其他13个国家武装部队使用。RITA 是全保密的自动战术移动通信系统,现时正在法国和比利时运转使用。 The GTE Government System Company combines the AN / TTC-39, SB-3614 in the United States with the RITA system equipment in Europe to provide the Mobile User Equipment (MSE) system for US Army tactical communications requirements. AN / TTC-39 is a field automatic digital switch. The SB-3614 is a standard automatic tactical telephone switch that is used by the Armed Forces in the United States, Canada and 13 other countries. RITA is a fully confidential automated tactical mobile communications system that is currently operating in France and Belgium.