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DCIF means Double CIF, offered as a trade off determination in the middle of CIF and 4CIF that is more adjusted (as far as even versus vertical determination) and suited to normal CCTV gear (with 480+ scanlines however a greatest of around 560 TVL) than 2CIF (704x288).
For making the essential process of communicating more efficient, an IP PBX system will go a long way. You can deploy multiple devices in your office and use them to access different departments easily. The centralized number also helps you communicate and advertise easily.
Telephone conversations are very important for business as well as personal life. In business, the company needs to communicate with clients, employees, investors and stakeholders all over the world. Technology has encouraged global business. This necessitates the need to communicate globally.