Asterisk E1/R2 signalling

Hi all,

I would like to use Asterisk in the E1/R2 digital compelled enviroment. Which card is better TE210P Dual T1/E1 card or Sangoma A102U Dual T1/E1? I heard Asterisk’s Unicall add-on can support R2 signalling. But I dont have no idea. Would you give me advice?

Thanks for help