Describe the technology or concept Summarize its advantages and disadvantages, if any Discuss trends i.e. is its use increasing, decreasing, or staying the same

 After completing all of , please of the technologies/concepts covered this week (e.g., PSTN, VoIP, instant messaging) and, in your own words, provide the following:1. Describe the technology or concept 2. Summarize its advantages and disadvantages, if any 3. Discuss trends i.e. is its use increasing, decreasing, or staying the same  Here are a few more possible topics in case you are having a hard time finding a technology/concept to write about (note that this is not an all-inclusive list): technology convergence (not discussed in this week\’s readings, but useful topic to know about), fax, voicemail, automatic speech recognition, interactive voice response, e-mail, instant-messaging, IMPP, SIMPLE, XMPP, unified messaging, voice and data convergence, central office, and cell phone network. Also, please note that it can be a specific technology or concept. For example, you can write about virtual PBXs rather than PBXs. The goal of this discussion is to obtain a breadth of accurate information and to increase our telecommunications knowledge base, so I still prefer that we do not have several students writing about the same technology or concept (unless there are meaningful differences between the write-ups). Performing a limited amount of research is recommended. .  . Put the reference list at the end of your posting.