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FXO groundstart line issue

Hey everyone--you all have helped me out before, and i'm hoping you can help me

again...TAC is pretty much stumped

I've got a client that has a 2851 router, with PVDM2-64 5510 DSP module and a VIC2-4FXO card with groundstart lines.  I'll attach debug output from a test call that was made.  From the look of it, it times out waiting for ground on the tip lead.  The line tests fine with a butt-set, and it is definitely GS...

I'm at a loss as to what the issue is.  From the research i've done, it looks to be a potential issue with the 5510 DSPs, the DSPware, and GS lines, but it doesn't match all the symptoms exactly.  I'm hoping someone else has run into this and can provide some insight.

Also, the sh run.txt file is a snippet of the running config, relative to the voice config.