SoundPoint 335 - Ghost Calls mac.cfg vs mac-web.cfg

Hi

I am receiving unwanted ghost calls on my soindpoint 335

Phone Model SoundPoint IP 335

Part Number 2345-12375-001 Rev:A

MAC Address 00:04:F2:BD:XXXX

IP Address 192.168.1.XXX

UC Software Version 4.1.1.0731

BootROM Software Version 5.1.1.0132

I have read this post however I still have some questions.

My {mac}.cfg file is attached (zipped)

As you can see I've added the line for strict user validation at the end. Is this all I need to do?

Additionally can you tell me the revelance/precedence of the {mac}-web.cfg file? Do i need to add the same voIpProt lines into that file? Is there anyway to validate this strict user validation setting from within the phone itself or via the web gui?

Thanks for reading

Tony