WIC-2T is one of our VOIP products, and it is very useful and important, and the quality of it is very good, we can supply you with the good quality together with the good price. And please see below the features of it: 1) 2-port serial wan interface card 2) Other modes: WIC-2T, WIC-1ENET, WIC-IDSU-T1, WIC-1DSU-T1-V2 If you are interested in any of them, please don't hesitate to contact me, i sincerely hope to establish business relationship with you and your company, wish we could work together long and long.