Telecom is one of the most difficult grades to work with because of the wide variety and different qualifiers/disqualifiers.
A golden rule of thumb is that High Telecom cannot have transformers. But there are times a board still has qualities that grade it above midgrade and even above Peripheral. A lot of your older phone systems (pbx style) have boards that look really bad but actually have some value. We have always struggled with them because of the challenge of creating a rule to judge them by.
So we created a low grade telecom grade. This is for boards that we know came from actual telecommunications systems, and they have chips, pins, wide or long gold connectors, likely tantalum but they also have transformers and capacitors and junk. It is a grade that is always subject to interpretation. We do a lot of downgrading out of the low grade telecom.
Folks mistakenly consider Peripheral (even midgrade) as Low Grade Tele quite often, which is fine...it is hard enough for us to judge it sometimes. But pretty much if it came from an actual telecommunications system (phone room) and it has some of the qualities mentioned above, it "could" be low tele, if not high tele of course.
But for the record, those particular boards are all Low Tele based on what they are and where they came from.
This grade is always subject to change.
Thanks everyone!
|