Which two are typical traditional telephony terms? (Choose two

Which two are typical traditional telephony terms? (Choose two.) Select exactly 2 answer(s) from the following:

Which two are typical traditional telephony terms? (Choose two.) Select exactly 2 answer(s) from the following:

A.
QoS

B.
trunk lines

C.
IP phone

D.
private branch exchange

E.
presence



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