Network managers have long awaited (1) voice-over-IP(VOIP)solutions. VOIP (2)ease network management and decreases costs by converging a company' s telephony and data infrastructures into one network.And a VOIP solution implemented at a company' s head - quarters with far - reaching/3 ) offices can save tremendous amounts of (4)in long distance phone bills, provided that solutiori de- livers POTS -like voice quality (5)the Internet.
(1)
A、practice
B、practical
C、practicably
D、practicum
(2)
A、promising
B、promised
C、promises
D、promise
(3)
A、small
B、local
C、branch
D、end
(4)
A、cash
B、money
C、space
D、time
(5)
A、in
B、through
C、over
D、above