FusionPBX API assistance

Hi, We have an installation of FusionPBX. We have some basic requirements to assist us to integrate into our CRM. We do not need an integration developed, we simply need examples of the best practices to make the API calls we need. Firstly a prerequisite is that all calls must be recorded. Extensions are set to record all. 1a. API call to originate an call from an internal extension to an external phone number 1b. We must be able to dynamically set the external callerid through the API call 1c. The local device must auto answer. We can confirm the following header works with our devices (sip_h_Call-Info=\;answer-after=0) 2. API call to hangup all active lines on an extension 3. API call to view all active calls on the PBX