Outbound Dialing

This section describes the dialing format requirements and local routing options for DIDWW Outbound trunks.

Number Format

Calls to DIDWW Outbound gateway should be sent in the E.164 dialing format: country code + area code + subscriber number. Any leading prefixes such as 00 or + will be automatically removed before being passed to the PSTN. The same rule applies for Caller ID. Correct example:

To: Bob <sip:123456789@out.didww.com>  // Called destination number in SIP "To" header
From: Alice <sip:1987654321@Caller.com>  // Caller ID in SIP "From" header

Note

To block calls to unwanted destinations, update the Destination Dialing Settings on your outbound trunk. For detailed instructions, see: Destination Dialing Settings.

Local Routes

Local routes, also referred to as in-country routes, enable calling destinations that may be unreachable when routed via international networks, such as Toll-Free, Shared-Cost, or Emergency numbers.

When a DIDWW local DID is used as the Caller ID and a corresponding in-country route is available, the call is automatically routed via the local route. Using local routes is generally more cost-effective compared to international routing, as local termination rates typically apply.

Local routes are available in the following countries:

Albania	China	Georgia	Lithuania	Panama	Sweden
Argentina	Costa Rica	Germany	Luxembourg	Peru	Switzerland
Australia	Croatia	Hong Kong	Malaysia	Poland	Thailand
Austria	Cyprus	Hungary	Malta	Portugal	United Kingdom
Belgium	Czech Republic	Iceland	Mexico	Serbia	United States
Bosnia and Herzegovina	Denmark	Ireland	Netherlands	Singapore
Brazil	Ecuador	Israel	New Zealand	Slovakia
Bulgaria	Estonia	Italy	Nigeria	Slovenia
Canada	Finland	Japan	North Macedonia	South Africa
Chile	France	Latvia	Norway	Spain

Note

The listed countries require DIDWW DIDs to be used as Caller ID for local dialing. For more information and country-specific restrictions, please contact our sales department at sales@didww.com .