| Subject | French | English |
| avia., Canada | Comm. internat. | Int’l Comm |
| avia., Canada | Comm. internat. | international communication services |
| avia., Canada, tech. | comm. voc. | vx comm |
| avia., Canada, tech. | comm. voc. | voice communications |
| avia., Canada, tech. | réseau comm. ACC | ACC Comm Net |
| avia., Canada, tech. | réseau comm. ACC | area control centre communications network |