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FreeDMR/docs/freedmr-2/adr/0008-data-packet-forwarding...

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ADR 0008: Data Packet Forwarding Policy

Status

Proposed

Context

FreeDMR currently supports DMR data forwarding, including data gateway concepts and last-known-location routing. GPS/SMS application processing is better handled outside the core.

Decision

FreeDMR continues forwarding DMR data packets but does not become a general GPS/SMS application processor.

Rationale

Data support is part of network interoperability. Application processing would add complexity and CPU cost to the packet process and is better done by FBP-connected systems or sidecars.

Consequences

The core must preserve data packet routing semantics while keeping application parsing out of the hot path.

Compatibility

Existing SUB_MAP / last-known-location behaviour remains intentional. DATA-GATEWAY remains a supported concept where useful.

Testing Requirements

Tests must cover group-addressed data, unit-addressed data, last-known-location routing, data-vs-voice reporting, and preservation of data forwarding over FBP.

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