So up front, this is a play system for goofing around and trying different things. I have a Merlin Legend v7 with (2) 100D cards in it (slots 4 and 5). (One shows as 100D, another shows as 100D-U in inventory).

Wondering if anyone's seen these kinds of issues, or if one or both of my 100D cards are duds. When I first got this thing, I believe I had it set up and working well between the Legend and a Magix (and/or possibly this Adtran). I set it all aside as I got tangled up in the ARS stuff. I think. Since then, I've been trying to SIP-enable it using an Adtran 908e. I've had literally nothing but issues and wondering if I'm doing something wrong or if the thing maybe is starting to have a corrupted config somewhere.

For example, one issue I ran into was when trying to add the B-channels from slot 4 into a b-channel group, it doesn't let me enter them, so for example, b-channel group 1, enter 0423 (enter) just beeps. Previously, it only let me enter 0401-0403, and 0412-0423. When looking at the line assigned to that B channel under maintenance, it says its "maintenance busy", and although it says restore successful if I opt to restore, it still says its busy.

Does this sound like a dud card?

The card in slot 5 allows me to enter all B channels into the group, however the Adtran reports D-channel down on that card, despite all error lights being out.

Any words of wisdom would be appreciated; I'm ready to throw in the towel and just assume that perhaps both T1 cards are duds. I do also have a Magix, so tempted to try that on the Adtran next.