All topics
  1. Getting started
    1. Create your account
    2. Get started with the guided welcome
    3. Invite your team
    4. Keep your number and forward it to your agent
    5. Set up your first agent
    6. A tour of HiloVoice
    7. Get help
  2. Concepts
    1. What HiloVoice does
    2. The five kinds of agent
    3. Phone numbers and caller ID
    4. Campaigns and recipients
    5. Calls, leads and contacts
    6. Roles and permissions
  3. Building an agent
    1. How the builder works
    2. Describe the business
    3. Name the agent and give it a purpose
    4. Set your opening hours
    5. Handle each kind of caller
    6. Choose what the agent asks
    7. Give the agent answers
    8. Shape how a call sounds
    9. Give a Receptionist its number
    10. Write an outbound agent's opening
    11. Set a follow-up's goal
    12. Set when an outbound agent may call
    13. Give an outbound agent a caller ID
    14. Turn callers into leads
    15. Book appointments on a call
    16. Hand calls to a person
    17. Turn away callers you can't help
    18. Let the agent check your records
    19. Send messages after a call
    20. Review and go live
    21. Start a new agent from one you have
    22. Pause, archive or delete an agent
    23. Call new leads within seconds
  4. Agent playbooks
    1. Set up a receptionist for a clinic
    2. Confirm tomorrow's appointments
    3. Check the details you hold
    4. Ask for feedback after a visit
    5. Follow up on open quotes
  5. Testing and going live
    1. Test an agent with Try it
    2. Put a Receptionist on the web
    3. Check an agent before real calls reach it
    4. Your responsibilities on calls
  6. Campaigns
    1. How a campaign runs
    2. Create a campaign
    3. Import a campaign's recipients
    4. Set a campaign's calling hours and retries
    5. Monitor a running campaign
    6. Work the Needs a person queue
    7. Call a recipient again
    8. Read a follow-up's progress
  7. Day-to-day operations
    1. The Usage page
    2. Review your calls
    3. Follow up your leads
    4. Keep your contacts up to date
    5. Set up transfer destinations
    6. Put callers straight through to a person
    7. Block a number
    8. Keep up with notifications
  8. Integrations
    1. What you can connect
    2. Connect your own Twilio account
    3. Connect your calendar
    4. Send email from your own address
    5. Connect HubSpot
    6. Connect Salesforce
    7. Connect Slack
    8. Connect Zapier
    9. Send leads to your own system
    10. Add a lookup source
  9. Administration
    1. Change your organization's settings
    2. Manage members and roles
    3. Manage your phone numbers
    4. Plans, minutes and limits
    5. Make and revoke API keys
    6. Check who did what in the activity log
    7. Manage your own account
    8. Join the HiloVoice affiliate program
  10. Reference
    1. Glossary
    2. Campaign statuses
    3. Recipient statuses
    4. Follow-up dispositions
    5. Call statuses and outcomes
    6. Agent builder fields
    7. CSV columns
    8. Error messages
    9. Frequently asked questions

Phone numbers and caller ID

For BuildersChecked against the app on October 1, 2026

A phone number in HiloVoice can do two different jobs, and the difference explains most of what the Phone numbers page shows you.

Two jobs, one number

Answering calls for a Receptionist. When someone rings the number, this is the agent that picks up. A number answers calls for at most one Receptionist, and a Receptionist needs a number of its own to be reachable. This is set on the Receptionist's Phone Number step, and the Phone numbers page names the agent beside the number.

Being the caller ID for outbound agents. When an outbound agent calls someone, this is the number they see on their phone and the number they get if they ring back. It is set on the outbound agent's Caller ID step, where the chosen number reads Calls from this agent show this number. Any number of outbound agents can call from the same number.

An outbound agent's Caller ID step: the main line answers calls for the Receptionist, Front desk, and the ticked reminders line reads Calls from this agent show this number.

The two jobs do not conflict. The usual setup for a small business is one number: the Receptionist answers it, and every outbound agent calls from it. A customer who misses a confirmation call and rings back reaches the Receptionist, which is exactly what you want.

   (323) 555-0142
   ├── answers calls for: Riley (Receptionist)
   └── caller ID for:     Appointment confirmations, Follow-ups

Note: Outbound agents do not own numbers. If you try to give one a number the way you would a Receptionist, HiloVoice refuses; use the Caller ID step instead. This is why the outbound builder never offers to move a number away from your Receptionist.

When you need more than one number

  • Two Receptionists. Each needs its own number — a sales line and a support line, say.
  • A different caller ID for a different audience. A follow-up campaign to trade customers might call from a number that rings a different desk. Buy a second number and pick it on that agent's Caller ID step.
  • Local presence. Calling people in another area code from a number they recognise.

Buying a number

Numbers are bought inside HiloVoice, under Phone numbers or directly from an agent's Phone Number / Caller ID step. A number bought from an agent's step is attached to that agent straight away. Buying a number needs the Owner or Admin role.

Important: A number costs money every month from the moment it is bought. Release numbers you no longer use.

Releasing a number

Releasing gives the number back and cannot be undone — you will not get the same number again. HiloVoice will not release a number that is still in use, and tells you what is using it:

  • a Receptionist answers calls on it, or
  • an outbound agent calls from it, or
  • a campaign that hasn't finished calls from it, a draft included.

Free it first, the lightest way: disconnect it from the Receptionist, stop using it as the outbound agent's caller ID, or give the campaign another number to call from. Then release.

What "Retry" means on the Caller ID step

Before a number can be shown as caller ID, HiloVoice gets it ready to call from. If that failed — usually a passing problem — the number's row on the Caller ID step reads Not ready to call from yet, with a Retry button, and campaigns using the agent pause with the reason The agent has no caller ID to call from. Click Retry; if it keeps failing, contact support with the number.

A caller ID that isn't ready yet: the chosen number's row reads Not ready to call from yet, with Retry beside it.