| Subject | English | Lithuanian |
| med. | communication system | abipusio ryšio sistema |
| environ. | communications system A coordinated assemblage of people, devices or other resources designed to exchange information and data by means of mutually understood symbols | ryšių sistema |
| law, commun. | communications system | ryšio sistema |
| commun., chem. | two-way communication system | abipusio ryšio sistema |
| commun. | voice communication system | verbalinio pranešimų perdavimo sistema |