Colombia voice guidelines
Voice calling guidelines for Colombia (CO), covering reachability, caller ID formats, DTMF support, and emergency services.
Locale overview
| Field | Value |
|---|---|
| Country | Colombia |
| ISO code | CO |
| Region | South America |
| Dialing code | +57 |
Reachability
Colombia supports inbound and outbound voice calls for domestic, international, and toll-free number types.
| Call type | Inbound | Outbound |
|---|---|---|
| Domestic | Yes | Yes |
| International | Yes | Yes |
| Toll-free | Yes | Yes |
Note: Domestic outbound calls from numbers not provisioned on the local network are best effort and may not connect reliably to all destinations.
Caller ID
| Call type | 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) |
Caller ID delivery is non-guaranteed for domestic outbound, international inbound, and toll-free outbound call types due to inconsistent carrier handling of Caller IDs across the Colombian networks.
DTMF support
Colombia supports DTMF signaling using RFC 2833 in both directions.
| Direction | Supported |
|---|---|
| Inbound | Yes |
| Outbound | Yes |
Emergency services
Calls to emergency services numbers in Colombia are not supported. Do not rely on this service for emergency communications.
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 Colombia.