VoIP Not Working? Quick Fix Guide

Updated 1 September 20201 min read5 steps

Common Issues

• Can’t make or receive calls
• No sound or one-way audio
• Choppy, lagging, or dropped calls
• Noise or static

Start Here

1. Check Your Internet

   VoIP needs a stable connection.
   If your internet is down or slow, fix that first.

2. Restart Your Setup

   Switch everything off, then back on in this order:

   1. Router
   2. VoIP device

3. Check Connections

   • Cables plugged in properly
   • No damage
   • Handset powered

4. Using an App (Zoiper / GS Wave)?

   • Must be connected to WiFi or mobile data
   • Status should show Ready / Green

5. Check Registration

   Not registered = no service
   Check your VoIP details in Client Zone

Quick Fixes

No dial tone
→ Restart router and VoIP device

You can hear them, they can’t hear you
→ Try mobile data
→ Check router/firewall settings

Calls breaking up
→ Too many devices using internet
→ Reduce usage during calls

Bad quality on one number only
→ Likely routing issue
→ Report number + time of call

Echo
→ Lower volume
→ Move device away from electronics

Static or buzzing
→ Try another handset
→ Check cabling

Call takes long to connect
→ Normal with VoIP sometimes

“Number does not exist”
→ Check full number with area code

Bandwidth Guide

• 1 call: ~60 Kbps
• 3-way call: ~90 Kbps

If your line is busy, calls will suffer.

Still Not Working?

Have this ready before contacting support:

• Time of issue
• Number called
• What happened

Quick FAQs

Tech Info

Codecs: G729, G711