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SIP Calls

What is a SIP call?​

A SIP (Session Initiation Protocol) call is a voice (and optionally video) call carried over the internet using SIP signaling. Instead of using a traditional PSTN line, calls are routed through SIP trunks provided by telephony providers (for example, Twilio) and forwarded to your application or platform.

How it works​

  • A caller dials a purchased phone number (PSTN).
  • The SIP provider receives the call and forwards it via SIP trunking to ConnectNow using the configured origination SIP URI.
  • ConnectNow receives the SIP INVITE and routes the call to the configured AI agent or human agent flow.

Benefits​

  • Lower cost and greater flexibility compared to legacy phone systems.
  • Easier integration with cloud platforms and AI agents.
  • Scalable inbound call handling and centralized management.

Setup steps​

  1. Purchase a phone number from a SIP-capable provider (for example, Twilio).
  2. In the provider's console, configure SIP trunking for the purchased phone number and set the origination SIP URI to exactly:
sip:miim0jxyc5h.sip.livekit.cloud;transport=tcp

This ensures calls coming to the purchased number are forwarded to ConnectNow.

Set the priority and weight of the SIP URI to 1.

  1. Confirm other provider settings as needed (transport protocol, codecs, authentication) per the provider's documentation.
  2. In ConnectNow, open the Dashboard, go to Settings, and click Edit SIP Inbound Trunk.
  3. In the pop-up window, enable the SIP inbound trunk option, add all phone numbers you purchased, and click Save.
  4. After completing these steps, the SIP calls configuration is finished.

Testing​

Dial one of the purchased phone numbers from a regular phone. If the ConnectNow AI agent is enabled, it will answer the call.

Notes​

  • Provider UIs differ; follow your SIP provider's documentation for exact trunking steps.
  • The origination SIP URI above must be used for forwarding calls to ConnectNow.