... , Call back, Calling card, Call shop, Call center, Fax over IP, etc. More and more service functions are customizable for VoIP ... for example, callback, call shop, calling card, call center, Fax over IP, etc. The service-orient architecture in line with the development ... server’, it can handle FAX and Voice at the same time, perfect fit for ‘FAX & Voice’ over IP solution. High Performance-price-ratio 8 ...