I have a big problem with IP Phone when I configure forward for it.
On CUCM , I configure one IP phone with Noanswer External forwarding to a mobile.
When I Call from PSTN to this IP Phone but no ones answer , it is going to forward the call to my mobile. My mobile ring but the call is "one side calling " ( one phone was ringing but one another can heard what you say on the phone which was ringing )
I try to change CUCM but, It not work .
Please help me to solve this problem