Looking for captures of TRAU-UL frame stream from E1 BTS

Hello Osmocom community, Would anyone here happen to have a capture of a TRAU-UL frame stream from some historical E1 (or T1) BTS? And if no already existing UL capture is available, if I found someone with access to such equipment who would be willing to do a few tests for me, what would be the way to make such capture? I mean raw Abis UL capture, *not* converted to RTP or anything else, and because I don't have any T1/E1 hardware currently, I am not really familiar with Osmocom tools for working with such hw and what tap/trace/capture mechanisms are available. And yes, I see on the wiki page for OsmoDevCon that some E1 BTS hw will be present at the event - but my lack of an updated travel document from USCIS still precludes me from traveling anywhere outside of USA+Canada+Mexico territory. :( M~