[CentOS] Sangoma A101DE 1 Port E1/T1 With Hardware Echo Cancellation ( PCI Express ) Card installed on the box

>Even so, the card with no driver would be listed in lspci...

Sort of, it may be incorrectly identified as something else, all
those pretty names are simple mappings in a text file. See
/usr/share/hwdata/pci.ids

But then again, multiple people have suggested the same suggestions
and/or hints over and over, sigh...