CXR Larus CV-SE35-IU E1 G703/2Mbps, G704/ N x 64K (version IE) or T1 CSU-DSU, D4/SF/ESF format, Nx 64 kbps converter (vertion IU) to V35 with DTE M34/M(US) cable , alluminium case w front connectors, internal power supply 110/230 Vac