Uptime monitoring with phone call alerts means your phone rings when your site, server or job goes down. A monitor checks the target on a schedule. When it fails, the service calls the person on duty, reads out what broke and when, and asks them to press 1 to acknowledge or 2 to hand it to the next person. If nobody answers, it keeps escalating. Email and chat alerts can't do that, because nothing makes anyone read them.
This post covers why calls work better than inbox alerts, how a call-based monitor decides who to ring, and how to set one up on the free plan of Edesy OnCall.
The problem with email and chat alerts
Most monitoring tools default to email, and many teams forward alerts into a chat channel. Both share the same weakness: they are silent until someone looks.
- At night, phones are on Do Not Disturb and nobody opens email.
- Busy channels bury alerts under other messages. After a few false alarms, people mute them.
- Nobody owns the alert. Five people see it, and each assumes someone else is on it.
- There is no "nobody responded" signal. The outage runs until a customer complains.
For a small Indian team, an agency or a SaaS founder who is also the on-call engineer, these gaps are the difference between a ten-minute blip and a morning of lost orders. The downtime cost calculator shows what an hour of downtime costs your business.
What a phone call alert does differently
| Email or chat alert | Phone call alert (Edesy OnCall) | |
|---|---|---|
| Gets attention at night | Rarely | Rings like any call |
| Needs a response | No | Press 1 to acknowledge |
| Handles "nobody answered" | No | Escalates to the next step |
| Hand-off | Manual | Press 2 to escalate now |
| Language | Usually English | English or Hindi, per contact |
| Record of who responded | Scattered | Incident timeline |
An Edesy OnCall alert call sounds like this: "This is an alert from Acme Retail. Checkout API is down since 2:14 AM. Reason: HTTP 503." Then: "Press 1 to acknowledge this alert. Press 2 to escalate it to the next person." If no key is pressed, the message repeats once, then the call ends and escalation carries on.
Acknowledging stops further calls. You can also acknowledge from the link in the alert email or from the dashboard.
What you can monitor
OnCall has five monitor types. Details are on the features page.
| Monitor | What it checks |
|---|---|
| HTTP | A URL with GET, HEAD or POST, against the status you expect (2xx, 200 or a list like 200,204) |
| Keyword | The same, plus a word that must appear (or must not appear) on the page |
| TCP port | That a host accepts connections on a port, such as a database or mail server |
| Heartbeat | That a cron job or worker pings its URL on time |
| Alert webhook | Firing alerts from Prometheus Alertmanager, Grafana, Uptime Kuma or any tool that can post JSON |
The webhook monitor matters if you already run monitoring: keep your existing checks and use OnCall only for the phone call and escalation. See the Alertmanager and Grafana guide and the Uptime Kuma guide.
How it avoids false alarms
A phone call at 3 am for a one-second network hiccup is worse than no alert. OnCall waits for a configurable number of consecutive failures before it opens an incident (default 2, up to 10). After the first failure it rechecks within about 20 seconds instead of waiting a full interval, so a real outage is confirmed quickly and a blip is ignored.
When the check passes again, the incident resolves by itself, and everyone who was paged gets a "back up" email.
Who gets called: escalation policies
Each monitor uses an escalation policy, a ladder of steps:
- Step 1: call the primary engineer.
- Step 2, after 5 minutes: call the backup and email the team lead.
- Step 3, after 10 more minutes: call the founder.
A policy can have up to 10 steps, each with its own wait, one or more contacts, and call, email or both. You can repeat the whole ladder up to 10 times. Read more in escalation policies explained.
OnCall does not manage on-call schedules or rotations. A policy always calls the same people in the same order. If you rotate weekly, edit the policy when the shift changes.
Night-time calls
Between 21:00 and 09:00 IST, alert calls still go out. If your workspace has the standard calling window, the night call is a plain spoken alert without "press 1", so you acknowledge from the email link or dashboard. Edesy support can enable 24x7 alert calls with press-1 for your workspace. Details are in the night mode doc.
What it costs
| Plan | Price | Monitors | Fastest check | Contacts |
|---|---|---|---|---|
| Free | Rs 0 | 3 | Every 5 minutes | 2 |
| Starter | Rs 499/month | 20 | Every 60 seconds | 5 |
| Pro | Rs 1,499/month | 100 | Every 30 seconds | 25 |
Alert calls, including test calls, are billed per minute from your Edesy wallet at your workspace's call rate. Prices exclude 18% GST. New accounts get Rs 20 of welcome credit, no card needed. Plans are set by the Edesy team: start on Free and ask support when you need more. See pricing.
What you need
- An Edesy account (one login across Edesy apps)
- An Edesy phone number in your workspace, used as the caller ID for alert calls. Buy one in the voice app first.
- Contacts with a phone number, each verified by a short code read out on a call
Then: sign in at oncall.edesy.in, press Connect, add a monitor, add contacts, build a policy and send a test call. The quick start walks through it, and this step-by-step guide does it for one website on the free plan.
What OnCall does not do
To keep expectations clear: no SMS, WhatsApp, Slack or Teams alerts; no ping, SSL-expiry or DNS checks; no status pages; no schedules, rotations or maintenance windows; no multi-region checks; no mobile app. Phone alerts depend on telecom networks and your wallet balance, so don't make OnCall the only alarm for life-critical systems.
FAQ
What is uptime monitoring with phone call alerts?
A service checks your website, port, cron job or alert feed on a schedule. When something fails, it phones the people you chose, reads out what is down and asks them to press 1 to acknowledge or 2 to escalate. Edesy OnCall does this in English or Hindi.
Why is a phone call better than an email alert?
An email or chat message waits silently until someone looks. A call rings out loud, even at night, and needs a response. If nobody presses 1, the alert moves to the next person instead of sitting unread.
How much does it cost?
Edesy OnCall has a Free plan (3 monitors, 5-minute checks, 2 contacts), Starter at Rs 499 a month and Pro at Rs 1,499 a month. Alert calls are billed per minute from your Edesy wallet. Prices exclude 18% GST.
Can it send SMS or Slack alerts too?
No. Edesy OnCall alerts by phone call and email only. It does not send SMS, WhatsApp, Slack or Teams messages.
Start free with 3 monitors at oncall.edesy.in.