... capacity, it guarantees the maximum performance of 8*E1/T1trunk gateway ( G.711/G.723/G.729 codec calls and T.38/Pass-through ... chassis - Support SIP, SS7/PRI. - G.711, G.726, G.729, T.38, optional AMR codec, all E1 timeslot G.729, T.38 concurrent - Dual ... chassis - Support SIP, SS7/PRI. - G.711, G.726, G.729, T.38, optional AMR codec, all E1 timeslot G.729, T.38 concurrent - Dual ...