phone.systems™ trunks#

An inbound phone.systems™ trunk delivers calls received on your DIDWW DID numbers to the phone.systems™ PBX associated with your DIDWW account. Use this trunk type to send incoming calls to the PBX rather than directly to an external SIP endpoint or PSTN phone number.

The trunk settings control the format of the caller’s number, an optional caller ID prefix, and optional CNAM lookup for U.S. caller IDs. Configure how calls are answered and routed separately in phone.systems™, using call flows, users, and contact methods.

How phone.systems™ trunks work#

When a caller dials a DID number, the public telephone network routes the call to DIDWW. DIDWW delivers the call through the phone.systems™ trunk assigned to that DID number. The PBX then applies the routing configured for the number to determine where the call goes.

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flowchart LR
    caller["Caller"] --> |dials DID| did["DID number"]
    did --> |assigned trunk| trunk["phone.systems™ trunk"]
    trunk --> pbx["phone.systems™ PBX"]
    pbx --> |configured routing| destination["Call destination"]

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    classDef process fill:#ccfbf1,stroke:#2dd4bf,color:#1f2d3d,stroke-width:1.5px

    class caller,destination endpoint
    class did,trunk,pbx process

    linkStyle default stroke:#0066cc,stroke-width:1.5px

The DIDWW phone.systems™ trunk is separate from Inbound Trunks in phone.systems™, which configure how the PBX receives SIP traffic from VoIP providers.

phone.systems™ trunks and DID numbers#

To route a DID number’s incoming calls to phone.systems™, assign a phone.systems™ trunk to that number in the DIDWW User Panel. Multiple DID numbers can use the same trunk and its caller ID and CNAM lookup settings.

Assigned DID numbers automatically appear under Numbers > Phone Numbers in phone.systems™. These DIDWW number records cannot be edited or deleted from that list. Manage their trunk assignment in the DIDWW User Panel and their PBX routing in phone.systems™. See phone.systems™ Phone Numbers for details about the number records.

The DID number must have sufficient Capacity for concurrent inbound calls. The phone.systems™ trunk configuration does not include a separate Capacity Limit field.

Get started#

An active phone.systems™ subscription and at least one DID number are required. A trunk named phone.systems is created automatically with your subscription. Assign it to your DID numbers, then configure the PBX.

Subscribe to phone.systems™

Start a subscription and choose the number of seats for your PBX.

Subscribe to phone.systems™

Assign a voice trunk

Assign the phone.systems™ trunk to one or more DID numbers.

Assign a voice trunk

Launch and configure phone.systems™

Open the PBX and prepare your app or softphone to receive calls.

Launch and Configure phone.systems™

Configure and manage trunks#

Create an additional trunk only when some DID numbers need different caller ID or CNAM settings. Editing an existing trunk changes the settings used by all DID numbers assigned to it.

Create a phone.systems™ trunk

Create an additional trunk with its own caller ID and CNAM settings.

Create a phone.systems™ trunk

Manage phone.systems™ trunks

View, edit, or delete existing trunks.

Manage phone.systems™ trunks