The telephone exchanges are indispensable for the development of the Businesses, PRO SERVICES presents the same analogous as IP with advantageous features of activities as, answering machine to transfer the clients to the extensions in a call and desired departments without intervening the receptionist, recording of messages, automatic fax recognition, blocking of 1 and 0 with access code, can use all types of phones, among others.

IP PBX systems are convenient for the use of corporations that manage several branches to avoid the costs of national and international calls in addition to the use of the same extensions even if the person moves from place, reports via PC.