In order to use TLS and SRTP, do the following:
Enable TLS in Sipelia™ from the General tab.
Set SRTP mode to Prefer in SipServer.config from the path C:\ProgramData\Genetec Sipelia\SipServer. A Sipelia Plugin Role restart is required afterwards.
From the Zenitel Turbine Video Station device’s webpage, navigate to the SIP Configuration tab.
In Certificates, click Choose File and upload a PEM certificate from your Sipelia Server.
Once the import is completed, you should see your certificate among the list of certificates imported to the device.
In the SIP Configuration tab, click Account/Call.
Configure the Outbound Proxy with the SIPS port configured on the Sipelia Server (the default is 5061).
From the Outbound Transport drop-down list, select TLS.
From the SIP Scheme drop-down list, select sips.
From the RTP Encryption drop-down list, select srtp_encryption.
Select the SRTP Crypto Type.