I'd add most computer stuff is higher grade, most printer stuff medium, and most TV & radio boards on the lower end.
For Computer stuff if it's screwed on or socketed it goes in it's own pile, but never recommend breaking off a soldered component until you know exactly what you're doing. Some aluminum heatsinks are stuck on with plastic anchors that it's easiest to break those tho.
The boards you mentioned are likely tele-com boards, usually the highest value, and it's possible those type units have resale value well above scrap. You just need to do some research on the unit such as google the make and model number till you know for sure what you've got. Most of us have broken down or scrapped things that might have brought much more so it's best to go slow at first until you know more about the different categories of ewaste and what units and components are worth attempting to sell whole.
There's also other categories such as vintage, which are maybe worth more, or newer systems, which are maybe worth more, plus a whole bunch of stuff in between that's not worth messing with other than for scrap. You'll learn as you see more and more of it
and as always, read read read ; ) Good luck!
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