A call shop is a business that provides physical phones for the purpose of making long-distance telephone calls. There are two main types of call shop payment methods; prepaid and postpaid.
A device or a program, which is makes the transformation of data or
signal. Codecs can both code flow/signal (often for transfer, storage or
encoding) and decoding – for review or changes in the size, more suitable also
for these operations. Codecs are often used during the digital processing of
video and sound.