List of Value Added Service - VAS

VAS is one of the most important section in Service Layer in Mobile Communication System. I would like to take the opportunity to list down some VAS service names:

1. SMS - Short Message Service
2. MMS - Multimedia Messaging System
3. VMS - Voice Mail System
4. MCA - Missed Call Alert
5. VSMS - Voice Short Message Service
6. RBT - Ring Back Tone
7. UMB - USSD Menu Browser
8. MCC - Mobile Collect Call
9. WAP GW - WAP Gateway
10. DO - Data Optimizer
11. IVR - Interactive Voice Response
12. ADC - Automatic Device Configuration
13. OTA - Over The Air - activating CDMA/ Roaming List
14. Wi-Fi Roaming