CXR Larus CV-SE35-CU E1 G703/2Mbps, G704/ N x 64K (version CE) or T1 CSU-DSU, D4/SF/ESF format, Nx 64 kbps converter (vertion CU) to V35 with DTE M34/M(US) cable , alluminium case w front connectors, internal power supply 48Vdc