I have two users at two of our locations that experience one-way audio when calling the other individual. Both of these users are using Cisco IP7945 phones. The person who can hear the audio (let’s call her Shannon), has a phone on the 192.168.4.0/24 subnet and the other user (let’s call him Mike), who is unable to hear Shannon, has a phone on the 192.168.2.0/24 subnet. It only occurs between these two phones. Shannon can call other employees at Mike’s location and they can hear her fine.
Any ideas as to what is causing this issue?