Olorunfemi Ajibulu Can you please guide on how to achieve this? While client parameters behaviour allows sending only 2 parameters (namely %CallerNumber% %CallerDisplayName% ) through External Applications; I am looking for solution to append 4 parameters in Web URL (other 2 parameters being Number where call is recieved and extension number). In case you have any blog referring to this approach, or can share reference material to achieve needful, will be a great help. Thank you.