Τηλεφωνικά Κέντρα
Voice over IP (VoIP)
Voice over Internet Protocol (VoIP), allows voice services over high-speed IP networks.you make telephone calls using a broadband Internet connection instead of a regular (or analog) phone line. Some services using VoIP may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers. Also, while some services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone through an adaptor. As VoIP expands, the cost of maintaining separate voice and data networks will also decrease, bringing savings .