Can I test TE210P without E1 line?

As I understand E1 ports of te210p can act as both “fxo” and “fxs”.
Can I connect one port to another and try to call from one ext of * box to another ext using this line? I just would like to play with this card and be shure that it works.
What cable do I need if this is possible?

Thank you in advance.