Inbound Trunks

DIDWW Inbound SIP Trunking ensures reliable, scalable, and high-quality voice traffic delivery from local, mobile, and toll-free numbers worldwide. Our flexible trunk group architecture provides automatic failover protection, load balancing, and configurable call routing to optimize call handling.

Getting Started with Inbound SIP Trunks

Follow these steps to set up and configure your inbound SIP trunk:

Create a SIP Trunk. See the Creating a New SIP Trunk

Assign Your Trunk to a DID. Learn how in Assigning a Voice Trunk

Configure Routing & Capacity. Adjust settings in Routing Settings

Key Features

Preferred server selection: Choose specific Points of Presence (POPs) for each SIP trunk to ensure redundancy and low-latency services.

Link failure protection: Trunk groups automatically use alternate links in case of failure, based on configured priorities.

Load balancing: Distribute network traffic among multiple servers for optimal performance. Assign weight factors to define traffic sharing between trunks.

Re-routing disconnect rules: Define conditions for trunk failure and specify alternate routing. Rules are based on standard SIP response codes and DIDWW-specific failure conditions.

Configurable ringing timeouts: Set timeouts for call connection failures, with actions determined by re-routing disconnect rules.

Capacity limits: Set the maximum number of concurrent calls per trunk to manage call volumes effectively.

Number List: Block specific phone numbers or prefixes from making calls to your service, helping reduce unwanted or spam calls.

Supported Delivery Methods

SIP: Incoming calls are delivered to your designated infrastructure using the Session Initiation Protocol (SIP) .

PSTN : Incoming calls are routed to your specified telephone number using DIDWW PSTN Termination.

phone.systems™: Calls are distributed via a cloud-based virtual PBX software.