If you can’t make outgoing VoIP calls, work through these checks. Most issues are quick to fix.
Quick Checks
1. Confirm Internet Connection
VoIP won’t work without internet.
- Open a website or run a speed test
- If offline or unstable, fix your connection first
2. Check VoIP Registration
If your line isn’t registered, calls won’t go through.
- Log into Client Zone
- Confirm your VoIP account is active
- Re-enter credentials if needed
3. Check Your Device Setup
- VoIP device properly connected to router
- No loose or damaged cables
- Handset powered and working
4. Using a Softphone (Zoiper / GS Wave)?
- Connected to WiFi or mobile data
- App shows Ready / Registered
Common Causes
No Dial Tone
- Restart router and VoIP device
- Wait for full reconnect before testing again
Incorrect Number Format
- Make sure you dial the full number
- Include area code (e.g. 021, 011)
Firewall or Router Blocking Calls
- Some routers block SIP traffic
- Test using mobile data (softphone)
→ If it works there, your router is the issue
Insufficient Airtime / Balance
- VoIP is prepaid
- Check your balance in Client Zone
Network or Routing Issue
- If only certain numbers fail
- Note the number and time
- Report it for investigation
Still Not Working?
Before contacting support, have this ready:
- The number you’re trying to call
- Time of the issue
- Error message (if any)
This speeds things up.
Quick Tip
If your VoIP was working before and suddenly stopped, and you haven’t changed anything, it’s usually:
- A network issue
- A router setting
- Or registration dropped
Restarting your setup fixes a surprising amount of problems.