we (me and my guys) switched on the tech slang like PBX , UCS, ICMP, RTP , SIP ...
Tried and trusted methods when asked stuff like this:
Have two PowerPoint files sitting on your laptop's desktop. One named something like "<subject>-short.ppt", the other "<subject>-detailed.ppt". Plug the laptop into the projector when they ask for an explanation and show them the two ppt files icons. Ask them if they want a short or a detailed explanation while you move with the mouse between the two file icons.
They almost always pick "<subject>-short.ppt". However, it doesn't matter what they pick, since both files are the same

. In the presentation you carpet bomb them with technical details until their pea-sized brains shuts down. Make sure you comment slides with complicated images with words like "this is a simplified view of ...", "when omitting complex details we end up with ...", "not going into technical details ...".