Proposed by Martin Perlot, SilverLeaf Electronics New DSAs - 253 (0xFD) Network Bridge Preferred Dynamic Range: 144-159 This was in early versions of the protocol. This is typically a bridge to a high-speed network such as Ethernet, where raw RV-C data is translated across the bridge in its entirety. - 139 (0x8B) External Interface Preferred Dynamic Range: 144-159 This is a connection to non-RV-C devises that are low-speed or high-latency, such as Cellular SMS. Only a small amount of data is typically transmitted across the bridge, providing a limited interface to the external device or network. No PGNs or SPNs are proposed at this time.