How Twilio Powers Your NovaVoxx Phone Numbers

Twilio operates one of the largest developer-facing telephony networks in the world, with coverage across North America and most major international markets. Twilio Programmable Voice is the specific API that NovaVoxx uses to search, purchase, and route the phone numbers attached to your campaigns and receptionists.

What actually happens when you assign a phone

When you click Assign Phone on a NovaVoxx campaign, a few things run in sequence:

1. Availability lookup. We query Twilio's available-numbers API filtered by your chosen area code and feature set (voice, SMS).
2. Purchase. On confirm, Twilio assigns the number to your Twilio account and bills the monthly rental to it.
3. Webhook config. For inbound receptionists, the number's voice webhook is pointed at the AnswerStaff worker that handles your tenant. For outbound campaigns, the number becomes the Caller ID for all calls in that campaign.
4. DB record. NovaVoxx records the assignment so the dashboard can show you which numbers belong to which campaigns.

Picking the right area code

Neighbor-dialing — using an area code that matches the contact's — typically lifts answer rates versus an out-of-market number. For an inbound receptionist, pick an area code that matches your business location. For outbound campaigns targeting a specific region, match the region.

What you pay

Twilio charges you directly for the number rental (typically $1–$2/month for US local numbers) and for inbound/outbound minutes (fractions of a cent). NovaVoxx's monthly subscription covers talk-minutes toward your plan cap but doesn't mark up Twilio rental fees — you pay Twilio their published rate.

Releasing a number

When you delete a campaign or receptionist, NovaVoxx optionally releases the number back to Twilio so you stop paying for it. If you want to keep a number across campaigns (for brand continuity), you can — just detach it from the campaign instead of releasing it.