Has anyone got Secure SIP to work on a Grandstream phone. I can get the phone to register and receive calls, However every time i try and call out 3CX does not even show an attempted call in the server activity log.
BY SIZE
BY DEPLOYMENT
BY EDITION
BY INDUSTRY
SUBSTANTIAL SAVINGS
FREEDOM OF CHOICE
REMOTE WORKING READY
BOOST PRODUCTIVITY
TRIED AND TESTED
GETTING STARTED
ADVANCED
