Hi,
We are using an in-house developed CRM system.
I need to create an outgoing call from this CRM system.
I was able to create the call, but I need the call to be connected to the specific extension of the caller.
I appreciate it if anybody can help me in this.
Hi 
Everything what you need for this is described on this site: https://www.voip-info.org/wiki/view/Asterisk+auto-dial+out
You should enter an correct contex, extension and priority. Lets try with context for internal calls
If you are planning to Initiate a call from an external system use the Originate AMI action https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+ManagerAction_Originate