من قبل
Abdullah Bashnain , VAS & IN Senior Engineer , SABAFON, Yemen GSM Company for Telecommunication and Telephony
It is the most used and the high important for the company and the content provider also VAS provide a Solution for the company and the users (Subscribers) by using the USSD services.
VAS responsible for the design and how to create a simple way to provide the service and to be used, dealing and implementing with other department all services with local platforms.
