problem1. When talking about unified communication there are two very important concepts that need to be understood:

i. Concept of Presence

ii. Single number reach

describe both of them in detail

problem2. Since we are speaking of integration, just everything at the service of communication can be integrated. List and describe the four common things that can be integrated.

problem3. How can unified communications be useful? Describe four exs that would show the usefulness of unified communication.

problem4. What are the pros and challenges of having an IP telephony network?

problem5. What is the technical difference between Internet Protocol Telephony and PSTN networks?

problem6. Can two IP phones on the same network have same IP address?

problem7. How is Reliability different from Availability in a voice system? Your answer must be supported with exs and appropriate use of formulae.