Phone Numbers for AI Voice Agents

Phone Numbers let your agents make and receive real phone calls. Rent numbers directly through the platform, or import your own via SIP.

Your Numbers

The main view shows all your phone numbers with key details:

Field	Description
Number	The phone number
Provider	Telephony provider (e.g., Plivo)
Answering agent	The agent that answers calls to this number
Rent Date	When you acquired the number
Monthly Cost	Recurring cost
Status	Active or inactive

Click any number in the list to see its details and manage it.

Adding a Number

Click Add Number in the top right. You have two options:

Rent Number

Bring your own (SIP)

Rent a new phone number directly through the platform.

Click Add Number → Rent Number
Select your country and preferences
Choose from available numbers
Complete the rental

For most countries, the number appears in your list immediately, ready to attach to an agent.

Indian phone numbers require regulatory compliance approval before activation. You may need to submit identity or business documents, such as registration and GST certificates, before the number can be activated.

Connecting a Number to an Agent

Inbound and outbound are configured separately, on the agent’s Telephony tab (open your agent, then the phone icon in its left sidebar):

Section	What it controls
Answers on	Which numbers and inbound trunks this agent picks up. Each number or trunk is answered by exactly one agent.
Dials from	The caller IDs this agent can present on outbound calls. Caller IDs are shared: many agents may present the same number, and a call that doesn’t name its own `fromNumber` uses the first one attached.
Transfer from	The number shown when this agent hands a call to a human. Without one, transfers on inbound calls are refused (outbound calls fall back to their own line).

Attach the number under Answers on and calls to it are handled by this agent. Attaching a caller ID under Dials from does not make the agent answer the number, and vice versa; the two bindings are independent.

Releasing a Number

To stop using a number, click it in the list and click Release. Release is blocked while an agent still answers on the number or dials from it; detach it on the agent’s Telephony tab first.

Releasing a number expires it at the end of the month and cannot be undone. The number cannot be reused.

Call Controls

During an active call, agents can perform these actions:

Action	Description
Transfer	Connect the caller to a human or an external number
Hold	Place the caller on hold with music
End	Gracefully terminate the call
DTMF	Detect keypad presses (menu navigation, PIN entry)
Record	Start or stop call recording

Configure these on the agent under Agent Config. See Agent Config for the End Call and Transfer Call settings.

SIP Providers

The platform works with any provider that supports standard SIP trunking. Common choices:

Provider	Notes
Twilio	Elastic SIP Trunking; termination + origination URIs on your Twilio console
Telnyx	Global SIP trunk; termination URI from your Telnyx portal
Vonage	SIP trunking (Nexmo); requires trunk provisioning through account manager
Your own PBX / VoIP	Any provider that speaks SIP works. provide your termination URL and we handle the rest

The platform routes outbound calls to your SIP termination URL and gives you an Origination URL to configure in your provider so inbound calls reach your agent.

Audiences

Manage contact lists for campaigns

Campaigns

Use numbers for outbound calling