FIAS Data Dictionary

A practical reference to FIAS, organised by record family — purpose, direction, common fields and examples. It reflects our implementation experience; always check against the official specification for the FIAS release you integrate with.

LS LA LE LD LR

Link control

Handshake, record/field declaration, keep-alive and disconnect.

Guest in / out / change

Check-in, check-out, changes and room moves — the core data for locks, room control and gateways.

Room status

Housekeeping status, DND and make-up room requests.

Postings / folio

Posting call charges, minibar, pay-TV and Internet fees to the folio.

Keys / encoding

OPERA requests a key, the lock system answers, keys are deleted at check-out.

Wake-up / messages

Wake-up set, clear and result; message notifications and lamps.

Resync / night audit

Bulk resync of in-house data; night audit start and end markers.

<STX>RecordType|FieldIDvalue|FieldIDvalue|...|<ETX>

Example: <STX>GI|RN1203|G#100234|GNSmith|GA261020|GD261023|<ETX>

Convention	Detail
Framing	STX (0x02) / ETX (0x03)
Separator	pipe `\|`
Field	2-character ID + value, e.g. `RN1203`
Date / time	`YYMMDD` / `HHMMSS`
Field selection	declared by the third party in `LR` records during the handshake

FAQ

What does a FIAS record look like?

Each record starts with STX (0x02) and ends with ETX (0x03). The first field is the two-character record type (e.g. GI); fields are separated by |, and each field is a two-character field ID followed by its value, e.g. RN1203 for room 1203.

What are the date and time formats?

Dates (DA) are YYMMDD and times (TI) are HHMMSS.

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