телефонне з’єднання
field telephone set
telephone operator
radio telephone operator (RTO)
private line, telephone (PLT)
battery powered telephone
intratank telephone
telephone channel
telephone communication
wire telephone
amplifying telephone
voice telephone channel
electronic telephone switchboard
barrel-type connection
connection pipe leading
water pipe connection
base junction; rotary collector ring (box); rotary base junction (of a tank); rotary connection; slip ring; traverse rotary base junction
drain connection
pneumatic ground service connection
accordant connection
back-to-back connection
base connection
cascade connection
establishment of voice connection
voice connection
voice or data connection
aiding connection
delayed connection
delta connection
bridge connection
bridging connection
built-up connection
dial-up connection