How To Fix One-Way Audio On Voip Calls

Summary

This guide helps you troubleshoot and resolve: How To Fix One-Way Audio On Voip Calls. Follow the steps below to fix the issue.

Common Causes

One-way audio is a common VoIP issue where you can hear the person on the other end of the call, but they cannot hear you, or vice versa. Unlike a total call drop, the connection remains active, but the audio stream only travels in one direction. This is typically caused by network configuration issues that block Real-time Transport Protocol (RTP) traffic, such as restrictive firewall rules, SIP Application Layer Gateway (ALG) interference, or incorrect Quality of Service (QoS) settings.

Quick Fix Steps

1. Restart your VoIP handset or softphone application to refresh the network connection.
2. Check that your headset or handset volume is turned up and not muted.
3. Test a call to a different internal extension to determine if the issue affects all calls or only external numbers.
4. Power cycle your modem and router by switching them off, waiting 30 seconds, and switching them back on.

Troubleshooting

Check Handset and Device Settings

If the network is configured correctly, the issue may be with the physical device or software client.

1. Ensure the correct microphone and speaker are selected in your softphone settings.
2. For wireless handsets, check that the device is within range of the base station and has a strong signal.
3. Update the firmware on your VoIP handset to the latest version provided by the manufacturer.
4. If using a computer, check your operating system privacy settings to ensure the VoIP application has permission to access the microphone.

Test Your Network Path

High latency or packet loss can result in audio only travelling one way.

1. Run a speed test to verify your upload and download speeds meet the requirements for VoIP.
2. Use a tool like ping or traceroute to check for packet loss between your office and the VoIP provider.
3. If you are using Wi-Fi, try connecting your handset or computer directly to the router via an Ethernet cable to rule out wireless interference.

If you host with us, you don't need to do this yourself — just Open a Ticket and our Brisbane team will get it sorted.

If you have completed these steps and are still experiencing one-way audio, Open a Ticket with our support team for further assistance.

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