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
Our Recommendation: For most users, Zoiper Free works well for basic calling. If you need encryption (TLS/SRTP) for secure calls or G.729 for low-bandwidth connections, the one-time $49.95 Premium license is worth it.
Downloading Zoiper
Zoiper is available for all major platforms. Download the version that matches your operating system:
Zoiper 3 vs Zoiper 5: Zoiper 5 is the current version with the latest features. Zoiper 3 is a legacy version that some users prefer for its simplicity. Both work with IPComms, but we recommend Zoiper 5 for better codec support and security updates.
Creating Your IPComms Account
Before configuring Zoiper, you need SIP credentials from IPComms. Here is how to get them:
1
Sign Up for IPComms
Visit portal.ipcomms.net/signup and create your account. You can start with a free test trunk.
2
Access Your SIP Credentials
After signup, navigate to the SIP Trunking section of your dashboard. Your credentials will be displayed there.
3
Note Your Settings
Copy the following information - you will need it for Zoiper configuration.
Your IPComms SIP Credentials Format
SIP Server: sip.ipcomms.net
Port: 5060 (or 5061 for TLS)
Username: your-username
Password: your-password
Auth Username: your-username (same as username)
Caller ID: +1NPANXXXXXX (your DID number)
Screenshot: IPComms Portal - SIP Credentials Page
Building this? Your PBX will need a number
Find a phone number for your trunk
Local numbers $1.50 a month, toll-free $2.00, $1.00 one-time setup. Pick one here and it carries into signup.
Enter an area code, or wait a moment for numbers near you.
Show more More numbers, porting and E911 in the portal
Outbound US and Canada $0.010 /min
Inbound $0.009 /min
Local number $1.50 /mo
Per channel $0 no set limits Sign up now or see the full rate table . No contracts.
Configuring Zoiper for IPComms
Follow these steps to configure Zoiper with your IPComms SIP trunk:
Desktop Configuration (Windows/Mac/Linux)
1
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
2
Select Account Type
Choose SIP as your account type (not IAX or XMPP).
3
Enter Account Details
Fill in the following fields with your IPComms credentials:
4
Configure Advanced Settings
Click Advanced to access additional settings:
5
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:
1
Open Zoiper and tap Settings > Accounts
2
Tap the + button and select Manual configuration
3
Choose SIP as account type
4
Enter your IPComms credentials (same as desktop)
5
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
1
Go to Settings > Accounts > [Your Account] > Codec
2
Drag codecs to reorder them by priority (top = highest priority)
3
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:
G.729 Codec Support
G.729 uses only 8 kbps of bandwidth while maintaining good voice quality. Ideal for:
- Remote workers with slow internet
- Mobile users on cellular data
- Locations with limited bandwidth
TLS/SRTP Encryption
Secure your calls with encryption:
- TLS : Encrypts SIP signaling
- SRTP : Encrypts voice data
- Required for HIPAA/PCI compliance
Enabling TLS/SRTP with IPComms
# TLS Settings in Zoiper
Transport: TLS
TLS Port: 5061
SRTP: Required
Verify server certificate: Yes
Note: TLS/SRTP is only available with Zoiper Premium ($49.95 one-time purchase). IPComms supports TLS on port 5061. Contact support if you need help enabling secure connections.
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:
MicroSIP (Windows Only)
Ultra-lightweight, open-source softphone for Windows. Only 10 MB and includes TLS/SRTP for free.
Free TLS/SRTP
Open Source
Windows Only
MicroSIP Setup Guide
Linphone (All Platforms)
Fully open-source with TLS/SRTP included free. Works on Windows, Mac, Linux, iOS, and Android.
Free TLS/SRTP
Open Source
All Platforms
Linphone Setup Guide
