You have someone answering. They cannot answer two calls at once
Overflow is the most misdiagnosed lost revenue in a service business, because it never looks like a missed call. It looks like a busy tone, a fourth ring, or a hold that lasted eleven seconds too long. Vandial takes the calls your own phones do not get to, and only those.
From $99 a month · Robocalls are never billed
Incoming callNadia Farrell“I have been on hold twice this morning and gave up both times.”
Fourth call at once · Answered in 2 rings, booked
- Second call
- The one that arrives while the first is still being handled. It has nowhere to go today
- No replacement
- Your receptionist keeps the calls they answer. This is what happens after they are busy
- Invisible
- The caller reaches your number and gets an answer. There is no transfer, no queue, no menu
Not a message. A booking
Every one of these is something the product does on a real call, not a capability statement. Where it refuses to act, that refusal is the design.
It answers on the condition you set, not on every call
After a set number of rings, when the line is busy, at particular hours, or all of the above. The rule is yours. Everything else rings your own phones exactly as it does today, which is the point. This is not a replacement for the person at the front desk.
The overflow call gets the full treatment, not a message
This is where an overflow arrangement usually degrades: the calls your team handles get booked, and the ones that spill over get a callback slip. Here the second call gets the same triage, the same capture and the same booking into the same calendar as the first. Being the caller who rang at the wrong moment costs them nothing.
Your calendar is one calendar
It writes into the Google, Outlook, Apple or CalDAV calendar your team is already working from, reading the capacity that is actually left. There is no second book to reconcile at 5pm and no double-booking to apologise for at 9am.
The lunch hour stops being a hole
One person on a front desk means an hour a day with nobody on it, plus every break, every walk-in and every time they are on the other line. Nobody staffs a second receptionist for that hour, and nobody has ever measured what it costs, because a call that got a busy tone leaves no record anywhere.
Your team sees what happened while they were busy
Every overflow call is recorded, transcribed, classified and in the same log as everything else, with what it captured and what it booked. The front desk reads it rather than being told about it, and nothing lands as a surprise.
A spike costs nothing extra
The day a storm rolls through and your phone does a week's volume in four hours is the day a per-call overflow service is most expensive. Here it is the same monthly price as a quiet Tuesday, because plans are sized on how many customers you cover, not how many times the phone rang.
What people say before they say yes
In the words they are usually put in. Where the objection is right, it says so.
“We don't miss that many calls.”
Almost nobody thinks they do, because the evidence is missing by definition: a busy tone and a hang-up on the fourth ring leave no voicemail, no callback number and nothing in a missed-call list worth reading. The only businesses that know their overflow number are the ones that started measuring it after they fixed it.
“I don't want customers getting a robot when they expect Sarah.”
They expect Sarah and today they are getting a busy tone, which is the actual comparison. Sarah still answers every call she can. This is what happens on the calls that were going to go unanswered anyway.
“Isn't this just a second phone line?”
A second line gets you a phone that rings in the same room, at the same person, who is already on the first one. The constraint has never been lines; it is a human who can hold one conversation at a time.
What it will never do
You are handing your phone to something that talks to your customers when you cannot. These are the lines it does not cross, and the words it uses instead.
It never invents a price
It states the call-out fee and the rates you configured, and nothing else. Where it does not know, it says so and brings it to you rather than guessing — a number said on the phone is a number you are held to at the door.
What it actually says
“I'm not going to guess at the repair before someone's seen it — you'd only be annoyed if I got it wrong.”
It never promises an hour it cannot keep
Work in the field is booked in windows, because a specific time is a promise the traffic breaks. It offers the window that actually has capacity left, and it will not invent one to end the call politely.
What it actually says
“I can do Tuesday morning, between eight and twelve — I won't give you an exact hour and have you waiting in all day.”
It never sends anyone to voicemail
If the transfer ladder runs out and nobody accepts, it takes the details, commits to a specific callback window and flags it. A beep is the one outcome worse than not answering at all.
What it actually says
“I can't reach anyone this minute, so let me take the details and someone will call you back before nine tomorrow.”
The job lands where you already work
Google, Outlook, Apple, Exchange, CalDAV — whichever calendar you already keep. Then your payments, your CRM, and whatever you automate with.
…and a lot more besides
- Warm transfersWarm transfersAnnounced — who is calling and why, before you take the line.
- Spam never billedSpam never billedRobocalls are spotted, zero-rated, and never become a customer.
- A number per sourceA number per sourceVan, yard sign, Google listing — see which line brings the work.
- Team & on-callTeam & on-callTries you, then a second number, then whoever is on call.
- Run it by textRun it by textReply to a text to move a job, block a morning, clear a day.
- Clear a day, everyone toldClear a day, everyone toldCall off a wet Tuesday; every customer is told and re-offered.
- Never invents an answerNever invents an answerNo price or slot it was not given. It takes a message instead.
- Any trade, no codeAny trade, no codeGoal, questions and guardrails are settings, not a rebuild.
How does it know a call is overflow?
Your phone system does. You forward on busy, on no-answer after N rings, or on a schedule, using the same forwarding rules you already have, and the agent answers whatever arrives. Nothing about the caller's experience changes.
Will my receptionist know when it picked up?
Yes. Overflow calls sit in the same log as everything else, with the transcript, the classification and what was booked, so the desk can see at a glance what happened while they were on the other line.
Can it hand a call back to us?
It can transfer, and the transfer ladder is yours to configure. Each leg has to be accepted by pressing 1, so a call is never handed to a phone that is going to send it to voicemail.
Does an overflow call cost the same as a normal one?
There is no per-call price at all. Plans are sized on unique customers per month with unlimited call flows, so overflow volume does not change the bill, which is the opposite of how an overflow service normally prices, since spikes are precisely what they sell.
Can I use it only at certain hours?
Yes. The commonest setup is lunch, the first hour of the morning and the last of the afternoon: the three windows a single-person front desk cannot cover. It is a forwarding rule, so you can change it whenever you like.
When it answers
The hour, not the trade. Every one of these is a time your phone rings and nobody picks it up.
Answered for your trade, in your words
The questions, urgency rules and escalations are configuration. 31 trades have their own page.