Philippines voice guidelines
Voice calling guidelines for Philippines (PH), covering reachability, caller ID formats, DTMF support, and emergency services.
Locale overview
| Field | Value |
|---|---|
| Country | Philippines |
| ISO code | PH |
| Region | Asia-Pacific |
| Dialing code | +63 |
Reachability
| Call type | Inbound | Outbound |
|---|---|---|
| Domestic | Supported | Supported (best effort — not guaranteed when using a registered non-local caller ID) |
| International | Supported | Supported |
| Toll-free | Supported | Not supported |
Outbound calls to Philippines numbers placed with a registered non-local caller ID are best effort and delivery is not guaranteed. Toll-free outbound calling is not permitted in this locale.
Caller ID
| Call type | Direction | Format |
|---|---|---|
| Domestic | Inbound | E.164 (e.g. +63XXXXXXXXXX) |
| Domestic | Outbound | Local format — delivery not guaranteed |
| International | Inbound | E.164 (delivery not guaranteed) |
| International | Outbound | E.164 |
| Toll-free | Inbound | E.164 |
| Toll-free | Outbound | Not applicable |
DTMF support
RFC 2833 is the supported DTMF format for Philippines calls. DTMF is supported for both inbound and outbound call directions.
Emergency services
Calling emergency services in Philippines is not supported. Do not rely on voice calling for emergency use cases in this locale.
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 Philippines.