intercom
| intercom | |
| gen. | talkback |
| commun. | intercom system; intercommunication system; key system |
| telecom. | key telephone system; press-to-talk system; two-way telephone system |
| |||
| talkback | |||
| intercom system; intercommunication system; key system | |||
| key telephone system; press-to-talk system; two-way telephone system | |||
| communications | |||
|
intercom : 17 phrases in 3 subjects |
| Communications | 13 |
| Telecommunications | 2 |
| Transport | 2 |