EPABX electronic private automatic branch exchange is an inevitable communication system for big offices where dozens of people work at the same time. If you each of them were to be provided with a telephone line the cost would be so high as to make them prohibitive. With an intercom system in place you can avoid buying a separate connection for each of them. This will save the organization substantially. PBX systems have become one of the most widely used telephone systems by businesses nowadays. This tremendous popularity is due to the low cost of acquiring one, the flexibility of their usage and the significant improvement in corporate communications