D03-AX: Yes
Rationale
The already selected private direct-serial role can use the historical NET/ROM RS232 interconnection with ordinary serial interfaces. A dedicated RF modem or transceiver is not mandatory for that wired role. This finding does not cover the alternative radio deployment.
Assessment method
Specification/source/dependency analysis; no new runtime execution
Source context
Primary documentation and explicitly selected composition; documentary review 2026-10-15
Outstanding qualification
Documented dependency finding only. No live carrier test, capacity result or universal OS/device certification; setup privileges remain separate.