This article provides information and troubleshooting steps when you cannot make outbound calls using the Rainbow Office softphone and when the error message "Calling Unavailable" is displayed
Unable to make outbound calls. "Calling Unavailable" is displayed on the upper-right corner of the Rainbow Office softphone.
Rainbow Office softphone
The Calling Unavailable message generally means that the application is unable to connect to the Rainbow Office SIP servers due to any or combination of the factors below:
● Network configuration
● Internet connectivity
● Third-party applications (e.g., Firewall, Antivirus, VPN, etc.)
Follow the steps below to address the issue:
● Ensure that your internet connection is stable and is fully working
● Disable any applications such as third-party firewalls or VPNs which may affect the flow of traffic within your network
If the issue is still unresolved, please contact Rainbow Office support for further assistance.
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