CDMA with PCS systems

  1. Time division multiple access was used early in cell phone systems to carry how many voice channels on a single frequency derived channel? 2. What code does CDMA use to encode individual cell phone conversations? 3. Which cell phone transmission technology uses spread-spectrum transmission? 4. Which of the following has a complex security system that is based on encryption: PCS, GMS, PSTN, or WAP? 5. Through a web search contrast CDMA with PCS systems. Which major providers offer CDMA, and which PCS? 6. Search for the keyword WAP on http://Scholar.Google.com. Are there any details on how to hack during a WTLS-to-SSL conversion? Write your findings in detail here, including proper citation and references.