Originating Call Restriction OCR

coin call(pay-phone call)

over-restriction and reverse restriction

120First-aid call center

a call of nature

a call to arms

a close call

a duty call

a house of call

abandoned call

abbreviated address call

abbreviated call

abbreviated call letters

abnormal function call

accept the call

Access and Call Control Function ACCF

acoustically tunable optical filterautomatic call sequencer

acrylateautomatic call sequencer

ACSautomatic call sequencer