Before you start calling or texting on CallHub, make sure your device, browser, and connection are ready. Here's everything to check so your sessions run smoothly.
Devices and operating systems
CallHub works on Windows and Mac, and on phones, laptops, desktop computers, and tablets.
Browser compatibility
All major browsers support account creation, admin tasks, and campaign creation. For browser calling specifically, Google Chrome is recommended, since it comes with the WebRTC plugin built in. Safari, Edge, Brave, and Firefox also support browser calling.
✓ Run a browser check before your first calling session, especially if you're not using Chrome.
ⓘ Ad-blocker and pop-up blocker extensions can interfere with calling sessions. Disable them if calls have trouble connecting.
ⓘ Keep your browser updated to avoid minor software issues.
Internet and bandwidth
Use a minimum upload and download speed of 4 Mbps during calls. Avoid running bandwidth-heavy apps, like video streaming or screen sharing, at the same time as a browser call.
Hardware
| Component | Minimum |
|---|---|
| RAM | 4 GB |
| Processor | Dual-core 1.5 GHz or higher |
⚠ Don't use a VPN or proxy while calling. Their settings can interfere with browser calling and cause dropped or failed calls.
ⓘ Grant your browser access to your microphone. Browser calls won't work without it.
Audio
Use a wired headset or earphone connected via a 3.5mm port, USB-A, or USB-C. Keep other electronic devices away from your headset to avoid audio distortion during calls.
Screen resolution
| Device | Recommended resolution |
|---|---|
| Windows | 1024x768 |
| Mac (older versions) | 1280x800 |
| Mac (Apple M1 chip and higher) | 2560x1600 |
| iMac | 2560x1440 or 5120x2880 |
CallHub Mobile App
| Platform | Minimum version |
|---|---|
| Mac | macOS 12.0 or higher, Apple M1 chip |
| iPhone | iOS 12.0 or higher |
| Android | Android 10 or higher |
FAQs
Which browser is best for browser calling?
Chrome, since it has WebRTC built in. Safari, Edge, Brave, and Firefox also work, but run a browser check first if you're not on Chrome.
Why do my calls sound distorted or keep dropping?
Check that you have at least 4 Mbps of bandwidth, turn off any VPN or proxy, and keep other electronic devices away from your headset.
Do ad-blockers affect calling?
Yes. Ad-blocker and pop-up blocker extensions can interfere with calling sessions. Disable them if you run into issues.
Is there a CallHub mobile app?
Yes, for Mac (macOS 12.0+ with an Apple M1 chip), iPhone (iOS 12.0+), and Android (10+).
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