Pay for 61 seconds,
not 2 minutes.
Most calling services round every call up to the nearest 60 seconds. Telvio bills to the nearest second with zero connection fees. You pay for the conversation, not the billing interval.
How most services bill you
Most international calling services — including traditional carriers and many VoIP providers — bill calls in 60-second increments. This means a 61-second call costs exactly the same as a 119-second call: two full minutes.
If your average call runs 70 seconds, you're paying for 120 seconds every time. That's 71% more than the actual call duration. Over 50 calls, you've paid for roughly 42 extra minutes that you never talked.
Many services add a connection fee on top of that — $0.05 to $0.20 per call — charged the moment the call connects, before a single second of conversation.
Billed to the second. No connection fees.
Telvio measures call duration in seconds. A 61-second call costs 61 seconds at the destination rate. A 119-second call costs 119 seconds. The billing meter starts when the call is answered and stops when it ends.
There are no connection fees. The per-second rate is the only charge. What you see on the rates page is what you pay, with no surprises on your minute balance.
A 61-second call to Canada
Rate: $0.07/min ($0.001167/sec). Same destination, same call.
61 sec
$0.071
61 seconds × $0.001167/sec
$0.00
120 sec
$0.140
2 full minutes × $0.07/min
+ $0.05–$0.20
That one call saves 50% on billing alone — before connection fees.
Multiply across 50 calls per month and the difference becomes significant.
How the savings add up
Calls to Canada at $0.07/min. Comparing Telvio (per-second) vs 60-second block billing.
| Calls | Avg duration | Telvio cost | 60-sec billing | You save |
|---|---|---|---|---|
| 10 calls | 61s avg | $0.71 | $1.40 | $0.69 |
| 50 calls | 61s avg | $3.56 | $7.00 | $3.44 |
| 100 calls | 61s avg | $7.12 | $14.00 | $6.88 |
| 10 calls | 91s avg | $1.06 | $1.40 | $0.34 |
| 50 calls | 91s avg | $5.31 | $7.00 | $1.69 |
Calculations based on $0.07/min to Canada. Actual savings vary by destination and call length.
1 sec
Billing granularity
$0.00
Connection fee
50%
Saved on a 61-sec call vs 60-sec billing
200+
Destinations, all per-second
Billing questions
What exactly is "per-second billing"?
Per-second billing means Telvio charges you for the exact number of seconds your call lasts, rounded to the nearest second. A 73-second call costs 73 seconds of rate, not 2 minutes. There is no rounding up to the nearest 30 or 60 seconds.
Are there any connection fees per call?
No. Many VoIP services charge a connection fee of $0.05 to $0.20 just to connect a call, on top of the per-minute rate. Telvio charges nothing to connect. You only pay for seconds on the line.
How can I see exactly how long a call was?
Your call duration is shown in the call log inside the app immediately after the call ends. The log shows the destination, date, duration in seconds, and the cost in minutes deducted from your balance.
Does the billing start when I dial or when the call connects?
Billing starts when the call connects — meaning when the other person answers. Ringing time before the call is picked up is free. You are only charged for the seconds you are actually talking.
Does per-second billing apply to all countries?
Yes. Per-second billing applies to all destinations worldwide. Whether you are calling the United States, Germany, India, or anywhere else, you pay for the exact seconds of connected call time.
How do per-second rates compare to carrier international plans?
Most carrier international add-ons bill in 60-second increments and charge $0.25 to $3.00 per minute. Telvio rates start at $0.03 per minute, billed per second, with no connection fees. The combination of lower rates and fair billing typically means 80–95% lower cost for the same calls.
Fair billing. Cheap rates. Try free.
Every install includes one free minute to any country. See the difference for yourself.
Download TelvioWhat rounding actually costs
A provider that bills per minute charges for every minute started. That is not a rounding error in the arithmetic sense; it is a pricing decision, and its size depends entirely on how long your calls are.
On a forty-seven second call — "the flight landed", "are you home", "can you call me back" — a per-minute biller charges sixty seconds. That is 28% more than the time you used. On a two-minute-ten-second call it charges three minutes, 38% more. On a forty-minute call it charges forty-one, and the difference disappears into noise.
So the effect is largest exactly where most people's calling volume sits. A person who makes six short calls a week to family is paying a quarter to a third more than the advertised rate implies, permanently, and no comparison table shows it because both services quote the same headline.
The cost calculator prints both figures side by side for any country and any duration, which turns this from a claim into arithmetic you can check in ten seconds.
Why most services still round
Per-minute billing is inherited from circuit-switched telephony, where a call occupied a physical circuit and billing systems counted whole units because that was what the switch reported. None of that is true of a voice call carried as packets, and the wholesale market moved to per-second billing years ago.
What has not moved is retail. Rounding is worth real money on a large base of short calls, and it is invisible on a pricing page, so there is no commercial pressure to remove it. A provider that bills per minute is not doing something technically necessary; it is doing something profitable.
The tell is the pricing page. A service that bills per second says so, because it is a selling point. A service that does not state its increment bills per minute — the omission is the answer.
The other two charges that hide in the same place
| The connection fee | A flat charge per call, regardless of length. Historically standard on calling cards, still present on some apps at around five cents. On a one-minute call a five-cent fee can double the total. Telvio has none. |
|---|---|
| The minimum duration | Some services bill a floor — often one or three minutes — even on a call that is answered and ended immediately. A wrong number costs the minimum. Telvio bills from the first second with no floor. |
| Post-call rounding on the total | Rarer, and it means the sum of a month's calls is rounded rather than each call. It is the least damaging version and worth knowing exists. |
| Credit expiry | Not a per-call charge, but the same shape of cost: money paid and not spendable. Several large services expire unused balance after 180 days. |
How Telvio bills
- Per second, from the first second. A twelve-second call costs twelve seconds of credit at the destination rate.
- No connection fee and no minimum duration. An answered call that lasts three seconds costs three seconds.
- Billing starts when the call is answered, not when it starts ringing. Ringing is free, as it should be.
- The rate is the destination's published rate, quoted separately for landline and mobile, and is the entire cost. Nothing is added afterwards.
- Credit does not expire, so the arithmetic above is not undone by a deadline you did not notice.
Bottom line
Per-minute billing charges a whole minute for a forty-seven second call — 28% more than the time you spent talking. The effect is largest on short calls, which is where most people's volume actually is, and it does not appear anywhere on a pricing page.
Telvio bills per second from the first second, with no connection fee and no minimum duration. The published destination rate is the entire cost, and the calculator will show you the difference against a rounding provider for any call length you like.
Frequently asked questions
What is per-second billing?
Charging for the exact time a call lasts rather than rounding up to whole minutes. A call that ends at four minutes twelve seconds costs four minutes twelve seconds. Per-minute billing charges five minutes for the same call.
How much does per-minute rounding cost me?
On a 47-second call, 28% more than the time you used. On a two-minute-ten-second call, 38% more. On a forty-minute call, almost nothing. The effect is largest on short calls, which is where most people's calling volume sits.
How do I know whether a provider rounds?
Read the pricing page for the billing increment. A service that bills per second states it, because it is a selling point. A service that does not mention its increment is billing per minute — the omission is the answer.
Is there a minimum call charge with Telvio?
No. Billing starts when the call is answered and runs by the second, with no floor and no connection fee. A three-second answered call costs three seconds of credit.
Do I pay while the phone is ringing?
No. Billing begins when the call is answered. Ringing time is not charged.
Why do most calling services still bill per minute?
Because it is inherited from circuit-switched telephony and it is profitable on a large base of short calls. The wholesale market moved to per-second billing years ago; retail largely did not, because rounding is invisible on a pricing page.
