Phone Numbers | Smallest AI Docs

Atoms provides full telephony infrastructure — buy phone numbers, receive inbound calls, make outbound calls, and integrate with existing phone systems.

Capabilities

Type	Description
Inbound	Customers call your number, reach your agent
Outbound	Your agent calls customers (single or campaigns)
Transfer	Agent connects to human agents when needed
SIP	Connect to existing phone infrastructure

Getting Numbers

Buy from Atoms:

Available in 40+ countries
Local, toll-free, and mobile options
Instant provisioning

Bring your own:

Port existing numbers
Connect via SIP trunk

Type	Best For
Local	Regional presence, lower cost
Toll-free	National reach, professional image
Mobile	SMS capability

Call Controls

During calls, agents can:

Action	Description
Transfer	Connect to human or external number
Hold	Place caller on hold with music
End	Gracefully terminate call
DTMF	Detect keypad presses
Record	Start/stop recording

SIP Integration

Connect Atoms to your existing phone system:

Twilio
Telnyx
Vonage
Any SIP-compatible provider

Get Started

Platform

Buy and manage phone numbers

Developer Guide

Programmatic telephony control