Steve,
I doubt support has been removed. As you can well guess, most people in this list are not using them.
Jim would be the best to answer, but since he has not, I think he is unavailable.

Your best bet at this point is to give them a try. Look in the dahdi modules file and see if there is something close.
I would say Google is your friend in this endeavor. If not send them to me, I'll give them a try. :)

73, Steve N4IRS

On 2/13/2015 6:59 AM, app_rpt-users-request@ohnosec.org wrote:

Message: 4
Date: Fri, 13 Feb 2015 06:59:49 -0500
From: Steve Gladden <steve@michiganbroadband.com>
To: "'app_rpt-users@ohnosec.org'" <app_rpt-users@ohnosec.org>
Subject: [App_rpt-users] *Please Reply* Are the O'l Digium FXS or FXO
	pci	cards Supported?
Message-ID:
	<FEFD25773376F6448FE2884F5C1FA527B51C97C572@X2.michiganbb.local>
Content-Type: text/plain; charset="us-ascii"

Or will they work?

I remember reading they worked on old  versions of apt_rpt

I also figure they may be a better option than USB but relatively rare/expensive.
I was just given a bag of them and was wondering if they'd be useful on Acid and what's going on now.

Thanks!

Steve Gladden

Michigan Broadband Systems
Connecting Your Business!