Austria voice guidelines
Voice calling guidelines for Austria (AT), covering reachability, caller ID formats, DTMF support, and emergency services.
Locale overview
| Field | Value |
|---|---|
| Country | Austria |
| ISO code | AT |
| Region | Europe |
| Dialing code | +43 |
Reachability
All major call types are supported for Austria. The table below summarizes inbound and outbound support by number type.
| Number type | Inbound | Outbound |
|---|---|---|
| Domestic | Supported | Supported |
| International | Supported | Supported |
| Toll-free | Supported | Supported |
Caller ID
Caller ID presentation varies by call direction and number type.
| Call type | Direction | Caller ID format |
|---|---|---|
| Domestic | Inbound | +E.164 |
| Domestic | Outbound | Local (non-guaranteed) |
| International | Inbound | +E.164 (non-guaranteed) |
| International | Outbound | +E.164 |
| Toll-free | Inbound | +E.164 |
| Toll-free | Outbound | Local (non-guaranteed) |
Non-guaranteed means the carrier network may alter or suppress the caller ID before delivery to the called party.
DTMF support
RFC 2833 is the supported DTMF signaling format for Austria. DTMF is supported on both inbound and outbound calls.
Emergency services
Outbound calls to emergency services numbers (such as 112 or 133) are not supported. Do not route emergency calls through voice calling services for Austria.
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 Austria.