Like any VoIP service, CallHippo needs certain network ports open to connect calls. On home networks this usually works out of the box, but enterprise or corporate firewalls often block essential ports by default. This guide shows you which ports to open and how to keep calls flowing smoothly.
Why you need to open specific ports
CallHippo relies on specific network ports for signaling and for transmitting your voice data over the internet. On a personal or home network, no firewall changes are usually required. On enterprise networks, however, firewalls may block these ports, which prevents incoming and outgoing calls from connecting.
Which ports to open
To resolve connectivity issues and ensure seamless calling, open the following ports on your network firewall:
- Port 5060
- Port 5061
- Port 5062
- Port 5063
These ports are used for SIP (Session Initiation Protocol) and the other communication protocols required for VoIP services like CallHippo.
Once these ports are open, you’ll benefit from:
- Seamless communication — make and receive calls without interruptions or connection failures.
- Improved call quality — calls route correctly, giving you better audio and fewer dropped calls.
- Enterprise-level connectivity — every device on the network can use CallHippo, keeping communication consistent across your team.
How to open ports in your firewall
- Access your firewall settings. Log in to your firewall management console.
- Locate the port forwarding section. Depending on your firewall, this may be labeled “Port Forwarding,” “Port Triggering,” or something similar.
- Add the necessary ports. Enter ports 5060, 5061, 5062, and 5063 and specify the protocol (usually UDP or TCP).
- Save settings. Save your changes and restart the firewall if required.
- Test the connection. Open the CallHippo app or dialer to confirm everything works smoothly.
If you continue to experience issues after opening these ports, check with your IT team or contact CallHippo support.
Advanced network configuration
For larger or more restrictive networks, the following settings help with media connectivity and one-way audio issues:
- STUN traffic: If you can’t open the full UDP port range, allow UDP port 3478, which is used for STUN and helps facilitate media connectivity.
- Media traffic: For optimal call performance, allow outbound UDP traffic to the IP range 168.86.128.0/18 on ports 10,000–60,000, used by global edge locations for secure media (ICE/STUN/SRTP).
- SIP signaling: Keep ports 5060–5063 open.
- Proxy bypass: If you use a proxy server, add https://dialer.callhippo.com/ to the bypass list so real-time media and signaling flow directly without being filtered or delayed.
- Domain URL prompts: If your firewall asks for a domain URL when adding or removing rules, use the dialer URL https://dialer.callhippo.com/ without any port numbers or extra paths, then log in again to verify connectivity.
Frequently asked questions
Why do I need to open certain ports in my firewall?
These ports allow proper communication between your devices and CallHippo’s servers for transmitting voice data and handling call signaling. Without them open, you won’t be able to make or receive calls.
What happens if I don’t open these ports?
Your CallHippo account won’t be able to connect properly, which leads to issues such as the inability to make or receive calls.
Will opening these ports affect my internet connection in any other way?
No. These ports are specifically required for CallHippo’s VoIP service and won’t interfere with other online activities.
Why am I experiencing one-way audio on my office network?
One-way audio typically occurs when your firewall blocks media traffic. Confirm that UDP port 3478 (STUN) and UDP ports 10,000–60,000 are open, that the destination IP range 168.86.128.0/18 is not blocked, and that SIP ports 5060–5063 are allowed. Also verify that no proxy or deep packet inspection tool is interfering with VoIP packets.
Can I open these ports myself, or do I need IT support?
If you’re comfortable with firewall settings, you can follow the steps above. If you’re unsure, reach out to your IT team for assistance.
Still need help? Reach us at [email protected].