and pride of this land as the holy guardian that our ancestors entrusted to us with the will of pul adin and we will hand over this country to our future generations more proud and victorious than ever. finally, 3 months after the victory the islamic revolution provisional government officially cancels the capitulation agreement. managing phone calls in companies and businesses by localizing the cloud call center. if a company is a small company he wants a call center. it should have a separate set of equipment, including transmission equipment, servers that actually coordinate and broadcast the ivr for the subscriber , buy a specific phone number, etc. it is not related to any of these equipments, and now , by providing a technological product to the telecommunications company , danesh banyan provides this possibility to the companies. they have dear compatriots they use, in addition to all the features of messaging, such as group chat, video conference channel, it actually has the ability to provide call center services to customers, there is no need for companies to buy any other hard