The EXC-8000cPCI is an advanced Multi Protocol card (up to 6 modules) and together with the M8K708 (2 channel) module gives you a ARINC-708 test and simulation board for the Compact PCI bus.
The EXC-4000cPCI is an advanced Multi Protocol card (up to 4 modules) and together with the M4K708 module gives you a ARINC-708 test and simulation board for the Compact PCI bus.