Phone Numbers & Telephony
Getting a Phone Number
- Buy from Retell — purchase a number directly in the dashboard
- Import your number — bring numbers from Twilio, Vonage, or other providers
- Custom Telephony (SIP) — connect your own telephony infrastructure via SIP
Number Types
- Local numbers (US, UK, CA, AU, and many more countries)
- Toll-free numbers
- International numbers
Connecting to Agents
- Go to Phone Numbers in the dashboard
- Assign a number to an agent
- Configure inbound/outbound settings
- The agent is now live on that number
Custom Telephony (SIP)
- For enterprises with existing phone systems
- Connect via SIP trunk
- Retell handles the AI, your system handles the telephony
- Lower latency possible with direct SIP integration
Number Management
- View all numbers and their assigned agents
- Transfer numbers between agents
- Release numbers you no longer need
- Port numbers in/out of Retell