Pco full form: STD full form is Subscriber Trunk Dialling

STD full form is Subscriber Trunk Dialling ISD full form is International Subscriber Dialling PCO full form is Public Call Office The terms STD ISD PCO are used in the telephone system. They allow subscribers to dial trunk calls without operator assistance through trunk lines. Learn the meaning, history, operation, features, importance, pros and cons of PCOs in India and Pakistan. PCO stands for public call office, a phone installed for the common public in various areas. Are you looking for the meanings of PCO? On the following image, you can see major definitions of PCO. If you want, you can also download image file to print, or you can share it with your friend via Facebook, Twitter, Pinterest, Google, etc. To see all meanings of PCO, please scroll down. The full list of definitions is shown in the table below in alphabetical order. What is the full form of PCO? - Public Call Office - Public Call Office (PCO) is a telephone facility located in a public place.