I have a Cisco 7960 IP phone that can send calls with no issue, but it cannot receive calls. I tried port forwarding port 5060 and it doesn't make a difference. I have also turned off SIP ALG and that didn't make a difference either. Since the VoIP c...

Hello everyone, Before I state the issue I am experiencing, I will state a brief background of the scenario. I have somewhat moderate working knowledge regarding IP telephony thus some things may not as be as clear to me as it is for others. I am wor...