1. As part of GSM, describe the three rudimentary services provide by SMS.
2. What is CAMEL? Briefly describe it.
3. Do all text messaging systems use SMS? Explain how they use SMS, or if not give an example of one that does not use SMS.
4. What is used for transmitting short messages between SMSC and the hand-held device?
5. When does SMS spoofing occur? Please describe a typical scenario.
6. How does televoting work?
