AudioCodes Detect function

Hi Robert,
Thanks for the great audiocodes plugin :)
Just to let you know: At least for me all of the checks are also working on version 7.40A (EXCEPT the acgateway_alarms).
With your last commit you changed the detect function for all checks to only run on 7.20A, which to me doesn't seem correct.
I simply reverted this change and the checks are running fine!
Best regards