Taiwan voice guidelines
Voice calling guidelines for Taiwan (TW), covering reachability, caller ID formats, DTMF support, and emergency services.
Locale overview
| Country | Taiwan |
| ISO code | TW |
| Region | Asia-Pacific |
| Dialing code | +886 |
Reachability
| Number type | Inbound | Outbound | Notes |
|---|---|---|---|
| Domestic | Supported | Supported | Taiwan verified caller IDs are not supported for outbound calls to Taiwan |
| International | Supported | Supported | |
| Toll-free | Supported | Not supported | Outbound calls originating from toll-free numbers are not permitted |
Caller ID
| Call type | Inbound format | Outbound format |
|---|---|---|
| Domestic | +E.164 | Local format |
| International | +E.164 (delivery not guaranteed) | +E.164 |
| Toll-free | +E.164 | N/A |
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 Taiwan are not supported. Do not use this service for emergency calling.
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 Taiwan.