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Signaling

Voxtronics operates two main control planes: a SIP control plane and an HTTP control plane exposed via APIs. These control planes are logically separated but can interact to improve platform capabilities and integration flexibility.

These capabilities allow the platform to integrate with a wide range of environments.

In its current version, Voxtronics primarily handles incoming calls.

Inbound (Endpoints)​

Endpoints represent external SIP systems that can authenticate against and interact with Voxtronics for SIP signaling.

They can:

  • Perform REGISTER requests to establish reachability (dynamic contact binding)
  • Send or receive calls using INVITE requests

Registration is required for call delivery.

Endpoints must use the configured outbound proxy for SIP signaling. This is required for reaching the tenant instance.

Outbound proxy settings are available in the Tenant overview.

Each Endpoint uses the domain and credentials generated during endpoint creation for authentication and routing.

Outbound (UAC)​

For UAC configurations, Voxtronics acts as a SIP client and performs REGISTER requests toward an external SIP system.

This allows the external system to route incoming calls to Voxtronics using the established registration.

Voxtronics can also initiate outbound calls using INVITE requests toward that system.

Transport Support​

Voxtronics supports the following SIP transports:

  • TCP
  • TLS

UDP is currently not supported.