Need help identifying what card I have

I need to identify what card is installed on my remote freepbx. I assume I can log on to the web gui or winncp into a config file or a command line. Im running freepbx asterisk My client has an additional rdsi line which would like to connect to the pbx. I am hopping to find what line card is installed and configure it remotely.
Thank you for any help.

Can you SSH into the Linux command line?

Yes I can and winscp into it too.

lspci, dahdi_hardware, dmesg

Should get you in the right direction.

SSH into the Linux command line and run the command dahdi_hardware. This assumes that you have a DAHDI compatible hardware interface in the system like a Digium or Sangoma card.