Starting in version 16, the default configuration for the Asterisk Manager Interface (AMI) has changed. In previous versions the AMI bind address was set to 0.0.0.0 which would allow an AMI request to be served from any interface on the system. Starting in 16, the bind address is 127.0.0.1 so that only AMI requests from localhost will be served. This will be fine for most users and admins, but if you need to allow external access to the AMI, you will need to reconfigure it.
Steps to Allow AMI access from external hosts
Log into the PBX command line and edit the file /etc/asterisk/manager.conf
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