Zoiper Softphone Setup Guide: Configure with IPComms SIP Trunk

What is Zoiper?

Zoiper is one of the most popular SIP softphones available, known for its intuitive interface and cross-platform support. It transforms your computer or mobile device into a fully-featured VoIP phone that can connect directly to IPComms SIP trunks or your Asterisk/FreePBX system.

Zoiper Free vs Zoiper Premium

Downloading Zoiper

Zoiper is available for all major platforms. Download the version that matches your operating system:

Creating Your IPComms Account

Before configuring Zoiper, you need SIP credentials from IPComms. Here is how to get them:

Sign Up for IPComms

Visit portal.ipcomms.net/signup and create your account. You can start with a free test trunk.

Access Your SIP Credentials

After signup, navigate to the SIP Trunking section of your dashboard. Your credentials will be displayed there.

Note Your Settings

Copy the following information - you will need it for Zoiper configuration.

Your IPComms SIP Credentials Format

Screenshot: IPComms Portal - SIP Credentials Page

Configuring Zoiper for IPComms

Follow these steps to configure Zoiper with your IPComms SIP trunk:

Desktop Configuration (Windows/Mac/Linux)

Launch Zoiper and Create Account

Open Zoiper and click Settings (gear icon) then Accounts. Click Add to create a new account.

Screenshot: Zoiper Settings - Add Account

Select Account Type

Choose SIP as your account type (not IAX or XMPP).

Enter Account Details

Fill in the following fields with your IPComms credentials:

Configure Advanced Settings

Click Advanced to access additional settings:

Save and Register

Click Save. Zoiper will attempt to register with IPComms. A green status indicator means you are connected and ready to make calls.

Mobile Configuration (iOS/Android)

The mobile setup is similar, but accessed through the app interface:

Open Zoiper and tap Settings > Accounts

Tap the + button and select Manual configuration

Choose SIP as account type

Enter your IPComms credentials (same as desktop)

Enable Push Notifications for incoming calls when app is closed (Premium feature)

Audio and Codec Settings

Proper audio and codec configuration ensures the best call quality. IPComms supports all major codecs.

Recommended Codec Priority

Configuring Codecs in Zoiper

Go to Settings > Accounts > [Your Account] > Codec

Drag codecs to reorder them by priority (top = highest priority)

Disable codecs you do not want by unchecking them

Audio Device Settings

For best results, configure your audio devices properly:

• Use a USB headset for clearer audio and echo cancellation
• Set your headset as the default audio device in Zoiper settings
• Enable echo cancellation and noise suppression in audio settings
• Test audio levels using Zoiper's built-in audio test

Advanced Features (Premium)

Zoiper Premium unlocks several advanced features that are valuable for business use:

Enabling TLS/SRTP with IPComms

Troubleshooting Common Issues

"Registration Failed" or "403 Forbidden"

• Double-check your username and password
• Ensure the domain is exactly sip.ipcomms.net
• Verify your IPComms account is active
• Check if your IP is whitelisted (for IP auth accounts)

No Audio / One-Way Audio

• Check your firewall - allow UDP ports 5060 and 10000-20000
• Disable any VPN during testing
• Enable STUN in Zoiper: stun.ipcomms.net
• Try switching between UDP and TCP transport

Poor Audio Quality / Choppy Audio

• Switch from WiFi to ethernet if possible
• Lower codec priority - try G.729 if on slow connection
• Close bandwidth-heavy applications during calls
• Check for packet loss with a speed test

Calls Drop After 30 Seconds

• Your router may have strict NAT - enable STUN
• Reduce registration expiry to 300 seconds
• Enable keep-alive packets in advanced settings

Mobile App Does Not Receive Incoming Calls

• Enable push notifications (Premium feature)
• Disable battery optimization for Zoiper
• Allow Zoiper to run in background
• Check notification permissions in phone settings

Zoiper Alternatives

While Zoiper is excellent, you might want to consider these alternatives based on your needs: