Dear Nyagundi, We sell VOIP-PRI, VOIP-GSM & VOIP-FX gateways, some have more than 2 Media's

From your request, I bet you are looking for an interconnect gateway with PRI, SS7 and SIP/H.323.

You can check us out on www.talinda.net We have several local installation (ISP) Regards, Eunice