Thanks so much IPKII for all your help.
I tried unplugging the phone and that didn't work.
I looked at the class of service programming and found this option checked which seems to be the option?
Under System Data 20-08: Class of Service Options(Outgoing Call Service):
10 - Handsfree Answerback/Forced Intercom Ringing Switching
Do you know if this is the setting for switching ringing on and off? If not, do you know by any chance?
I will try to reboot the system tonight after hours to see if that works.
Such a strange problem since it just started happening and isolated to just one phone.
Thanks again for all your help.
