phone.systems™ trunk settings reference#

This reference describes the fields available when creating or editing an inbound phone.systems™ trunk. The settings are grouped by the tabs shown in the DIDWW User Panel and cover the trunk name, caller ID format and prefix, and CNAM lookup. Calls are delivered to the phone.systems™ PBX associated with the DIDWW account.

For configuration steps, see Create a phone.systems™ trunk or Manage phone.systems™ trunks.

General#

The General tab identifies the trunk.

Field	Availability	Description
Name	Required	Name used to identify the trunk in the DIDWW User Panel. The default value is `phone.systems`.

Unlike SIP and PSTN trunks, a phone.systems™ trunk does not require a SIP destination, PSTN destination, trunk-level capacity setting, or ringing timeout setting.

Number Translations#

The Number Translations tab controls the caller ID delivered to phone.systems™.

Field	Availability	Description
CLI Format	Editable	Format applied to the caller ID in the SIP `From` header. The default value is E.164.
CLI Prefix	Optional	Prefix added before the caller ID after format conversion. Enter up to six characters containing digits or `#`, optionally preceded by `+`. The optional `+` is not included in the six-character limit. For example, `+` alone adds that symbol to every delivered caller ID. The field is empty by default.

CLI Format values#

Value	Format	Description
E.164	Country code, area code, and number	Converts the caller ID to E.164 format. This is the default and recommended value. The number is delivered without `+`. For example, `12125551234`.
Raw	Unmodified	Sends the caller ID unchanged, as received from the originating network.
Local	Area code and number	Converts the caller ID to the local numbering plan of the DID number’s country of origin. For example, `2125551234`.

Note

DIDWW transfers the caller ID accurately for local calls. International caller ID conversion depends on third-party providers and may not always produce the expected value.

Additional Services#

The Additional Services tab controls caller name lookup for incoming calls.

Field	Availability	Description
Enable CNAM Lookup	Optional	Looks up the caller name associated with a U.S. caller ID and delivers it as the display name in the SIP `From` header. An additional charge applies to each call from a U.S. source number. The default value is Disabled. See CNAM IN.