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 |
France |
Latvia |
North Macedonia |
Slovenia |
Argentina [1] |
Colombia |
Georgia |
Lithuania |
Norway |
South Africa |
Australia |
Costa Rica |
Germany |
Luxembourg |
Panama |
Spain |
Austria |
Croatia |
Hong Kong |
Malaysia |
Peru |
Sweden |
Belgium |
Cyprus |
Hungary |
Malta |
Poland |
Switzerland |
Bosnia and Herzegovina |
Czech Republic |
Iceland |
Mexico |
Portugal |
Thailand |
Brazil |
Denmark |
Ireland |
Netherlands |
Puerto Rico |
United Kingdom |
Bulgaria |
Ecuador |
Israel |
New Zealand |
Serbia |
United States |
Canada |
Estonia |
Italy |
Nicaragua |
Singapore |
|
Chile |
Finland |
Japan |
Nigeria |
Slovakia |
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 .