This document will provide instruction on how to set a forward on a SIP Trunk in MetaSwitch
Step 1: Search the name or number of the SIP trunk that you want to set the forward on
Step 2: Navigate to the services tab
Step 3: Select the Call Forwarding (Unconditional) dropdown and select enable and input desired number
Step 4: Navigate to the bottom right panel and select apply and refresh.
Check out this video: https://share.vidyard.com/watch/EzyhJEpGXXAGJPP8TNTDYC?