Internetworking CCSDS AOS and ATM requires address tranlation between the two protocols. In CCSDS AOS the Application Process ID (APID) is used as the address of the communicating process. The CCSDS Version-1 packet allows up to 2048 APIDs. The APID may be combined with an 8-bit spacecraft ID to produce a unique address. In ATM the virtual circuit identifier combined with the virtual path identifier provide a unique address. Virtual path identifiers may be used to route many services as a group back to the Jet Propulsion Laboratory from the Deep Space Network earth stations. Virtual circuit identifiers may then be used to split the individual services apart.