I installed FreePBX 188.8.131.52,
Asterisk 18.20 and I can call voicemail using *97 and it plays the menu. However it does not recognize button presses from either phone. I do not have a password set on the accounts. What the problem? I am using Cisco 7841 3PCC version mterm-78xx.11-3-1MSR1-3_REL and my Zoiper in HP laptop. Is it from firmware Cisco because it can support only Asterisk 11?