Luxembourg voice guidelines
Voice calling guidelines for Luxembourg (LU), covering reachability, caller ID formats, DTMF support, and emergency services.
Locale overview
| Field | Value |
|---|---|
| Country | Luxembourg |
| ISO code | LU |
| Region | Europe |
| Dialing code | +352 |
Reachability
Luxembourg supports inbound and outbound calling for domestic, international, and toll-free number types. There are no special outbound restrictions or requirements.
| Call type | Inbound | Outbound |
|---|---|---|
| Domestic | Supported | Supported |
| International | Supported | Supported |
| Toll-free | Supported | Supported |
Caller ID
Caller ID format varies by call type and direction.
| Call type | Inbound format | Outbound format |
|---|---|---|
| Domestic | +E.164 | Local (non-guaranteed) |
| International | +E.164 (non-guaranteed) | +E.164 |
| Toll-free | +E.164 | Local (non-guaranteed) |
Note: “Non-guaranteed” indicates that the carrier network may not preserve or deliver the caller ID value in all cases.
DTMF support
DTMF signaling uses RFC 2833 format and is supported for both inbound and outbound calls.
Emergency services
Calls to emergency services numbers in Luxembourg are not supported. Do not rely on voice calling to reach emergency services.
Compliance note
These guidelines summarize carrier requirements at the time of publication and do not constitute legal counsel. Verify that your implementation complies with all applicable telecommunications regulations in Luxembourg.