I have used https://service.ringcentral.com/faxapi.asp. It raised upgrade your browser error. Couldn't send the fax viia API in C#
I have used https://service.ringcentral.com/faxapi.asp. It raised upgrade your browser error. Couldn't send the fax viia API in C#
Hi there. You are currently using our legacy fax API which was recently upgraded to require TLS 1.2 for security purposes. The error you are receiving indicates that your system does not support TLS 1.2. Please see our Knowledge Base article 8778 on how to resolve this:
TLS 1.2 KB Article: https://support.ringcentral.com/article/8778.html
Additionally, you may want to consider upgrading to our new API which you can learn about at https://developers.ringcentral.com.
We also have a C# SDK available for the new API:
C# SDK on GitHub: https://github.com/ringcentral/ringcentral-csharp
C# SDK on NuGet: http://www.nuget.org/packages/RingCentralSDK
Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.
Download RingCentral Phone for Desktop:
Tip: switch to the "sandbox mode" before logging in the app:
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