Every call answered, resolved and logged without the hold music.
Zero Line puts an AI voice agent on your phone line. It picks up instantly, any hour, in your caller's language. It looks up the account, fixes the problem, takes payments, and hands the hard calls to your team with a summary ready.
Incoming call · +1 (415) 555-0192
Answering…
Teams we've built for
Recent client calls, and a few of the companies we work with.
How it works
One call, from first ring to closed ticket
Follow Sarah's call to Northwind Fiber: the agent answers, works out what she needs, fixes it, takes a payment and logs the ticket.
Step 1 · Answer
Every call picked up on the first ring
Day, night or weekend, and as many calls at once as come in. Callers are greeted by name the moment their number matches an account.
EricZero LineStep 2 · Understand
It hears what the caller actually needs
Natural speech, not a phone menu. Zero Line picks out every request in a sentence, notices frustration, and switches language if the caller does.
EricZero LineStep 3 · Resolve
It does the work, not just the talking
It checks the account in your CRM, runs your troubleshooting steps and calls your own systems, so the problem is fixed while the caller is still on the line.
EricZero LineStep 4 · Payments
Payments taken on the call
Overdue balances, deposits and renewals are collected through your own payment provider after the caller says yes. A receipt goes out by text.
EricZero LineStep 5 · Escalate
Hard calls go to the right person
Your rules decide what a human handles. Zero Line transfers to the right team with a written summary, so the caller never repeats themselves.
EricZero LineStep 6 · Log
Every call logged and measured
Each call becomes a ticket with the transcript, summary and tags in your helpdesk. The dashboard shows volumes, resolution rate and what callers ask most.
EricZero Line
Calls it takes off your team's plate
Customers call you. Zero Line answers every one, resolves what it can and routes the rest.
Support line
Account questions, troubleshooting and order status, answered from your knowledge base and systems.
Your order shipped this morning. Want the tracking link by text?
Billing and payments
Balances, refunds policy, payment plans and card payments taken on the call.
I can take the $64.00 now with the card ending 4242.
Bookings and appointments
Books, moves and cancels appointments straight into your calendar.
Thursday at 2:30 is free. Shall I book it for you?
Lead qualification
Asks your qualifying questions, scores the caller and sends hot leads to sales.
How many locations would you need this for?
After hours and overflow
Takes every call your team can't, so nothing goes to voicemail.
The office opens at 9, but I can sort this for you now.
Ticket triage
Opens, updates and routes tickets with the right priority and tags.
I've logged that as urgent for the engineering team.
Everything a support line needs
Not a phone menu with a nicer voice. A full agent that talks, looks things up, takes action and keeps your records.
Human-quality voice
Natural, low-latency conversation that handles interruptions and changes of topic.
Unlimited concurrent calls
Every caller is answered at once, whether that's three calls or three hundred.
30+ languages
Speaks the caller's language and switches mid-call if they do.
Trained on your knowledge
Answers from your help centre, policies and product docs, never from guesswork.
Takes real actions
Looks up accounts, updates records and calls your own APIs during the conversation.
Payments on the call
Collects balances and deposits through Stripe, Square or PayPal once the caller agrees.
Warm human hand-off
Transfers to the right team with a written summary, based on rules you set.
Ticket routing
Creates and routes tickets in Zendesk, Intercom, Salesforce or HubSpot with priority and tags.
Appointment booking
Books, moves and cancels appointments in Google Calendar or Calendly.
Outbound campaigns
Reminders, collections, confirmations and follow-ups, called on your schedule.
SMS and WhatsApp follow-ups
Receipts, links and confirmations sent by text the moment the call ends.
Transcripts and summaries
Every call recorded, transcribed and summarised, searchable by caller or topic.
Analytics dashboard
Call volume, resolution rate, handle time, sentiment and top reasons for calling.
Guardrails you control
Approved answers, topics it won't discuss, and when it must hand over to a person.
Keep your number
Forward your existing line or get a new local or toll-free number.
One agent instead of a call centre stack
Covering every hour usually means extra staff, an answering service, a phone menu and a separate dialer, and callers still wait.
Your stack today
- Extra agents for peak hours~$3,000 / agent
- After-hours answering service~$300+ / mo
- Phone menu (IVR) system~$100+ / mo
- Outbound reminder dialer~$150 / mo
- Call transcription and QA~$40 / seat
One workspace
Zero Line
From $149 / month with 500 minutes
- Answers every call, 24/7, in 30+ languages
- Resolves, takes payments and books appointments
- Hands hard calls to your team with a summary
- Logs every call as a ticket with the transcript
Connected to your systems during setup
The live demo uses sample tools. For your business we connect the agent to your own phone system, helpdesk, CRM and payment provider, so it works on your real accounts.
- Twilio
- Aircall
- Zendesk
- Intercom
- Salesforce
- HubSpot
- Zoho Desk
- Stripe
- Square
- PayPal
- Shopify
- Google Calendar
- Calendly
- Slack
- Zapier
- KBYour knowledge base
- APIYour own API
“Half our calls came in after five, and every one of them went to voicemail. We were losing customers to whoever picked up first.”
Log in and look around the portal
Try it now, no signup needed
- demo@zeroline.computerized.ai
- Password
- ZeroDemo2026!
Real leads, a real pipeline, and real analytics. The same product a paying customer sees.
Simple, public pricing
Flat monthly plans with minutes included. No setup fees, no per-seat pricing. Every plan starts with a 14-day free trial.
Starter
For a small team's main support line.
500 minutes · 1 agent · 3 seats
- AI agent on 1 phone number
- Knowledge base from your site and documents
- Call recordings, transcripts and summaries
- Tickets and callbacks
- Warm transfers to your team
- Call analytics
Growth
For busy lines and outbound calling.
2,000 minutes · 3 agents · 10 seats
- Everything in Starter
- 3 agents on 3 numbers
- Outbound campaigns from a CSV
- Custom actions on your own API
- Text follow-ups from your number
Business
For multi-line support teams.
6,000 minutes · 10 agents · unlimited seats
- Everything in Growth
- 10 agents and numbers
- Audit log
- Priority onboarding
Enterprise
For contact centres with their own requirements.
Custom minutes and agents
- Everything in Business
- Volume minute pricing
- SIP trunking and SSO
- SLA and dedicated support
Prices in USD. Extra minutes are $0.15 each; every call rounds up to the next minute. Trials include 60 minutes. Phone numbers and call charges come from your own Twilio account.
Hear it answer your calls
A 30-minute call with our team. We set up an agent for a business like yours before we meet, so you hear it on your kind of calls.
A live call
Talk to an agent set up for a business like yours.
Payments and actions
See a payment and a CRM update happen mid-call.
Human hand-off
Watch a transfer arrive with its summary.
Your rollout plan
Which calls to automate first, and a quote.
Rather pick a confirmed slot now?
Open the calendarQuestions support teams ask
Zero Line is an AI voice agent for customer support. It answers your phone line instantly, 24 hours a day, resolves calls using your knowledge base and systems, takes payments, books appointments, and transfers complex calls to your team with a written summary.
Yes. By default the agent introduces itself as a virtual assistant at the start of the call. You choose its name, voice, greeting and personality.
Yes. Zero Line collects payments through your own Stripe, Square or PayPal account, only after the caller agrees, and sends a receipt by text.
You set the rules for what a person must handle. When a call needs a human, Zero Line transfers it to the right team and passes on a written summary, so the caller does not have to repeat anything.
Yes. You can forward your existing number to Zero Line, or get a new local or toll-free number.
More than 30, including English, Spanish, French, German, Arabic, Hindi and Urdu. It answers in the caller's language and can switch if the caller does.
Yes. Zero Line runs outbound calls for payment reminders, appointment confirmations, renewals, lead follow-up and surveys, on the schedule you set.
The agent on this page plays Eric (or Ava, if you pick the female voice) at Northwind Fiber, a made-up internet provider with sample customers. It can look up an account, check for an outage, reset a line, read invoices, take a demo payment, log a ticket and hand the call to a team. No real card is charged and no real customer data is used.
During setup we connect the agent to your phone system, helpdesk, CRM and payment provider through their APIs, for example Twilio, Zendesk, Salesforce, HubSpot or Stripe, or your own API. The agent then uses them during calls the same way the demo uses its sample tools.
Starter is $149 per month (500 minutes · 1 agent · 3 seats). Growth is $449 per month (2,000 minutes · 3 agents · 10 seats). Business is $1,199 per month (6,000 minutes · 10 agents · unlimited seats). Enterprise is custom priced for Custom minutes and agents. Each plan includes call minutes; extra minutes are $0.15. Annual billing costs less and every plan starts with a 14-day free trial.
Zero Line is built by Computerized.ai, an AI software agency with offices in London and San Francisco.
Stop sending customers to voicemail
Talk to the agent yourself right now, or book a demo set up for your business.