Call Transfer to Extension

The operators of our call-center have a program that they use to record calls, talk topics, customer consultation results and other supporting purposes. The program has a phone book of employees, which is used to record the transfer of customer calls to company employees. That is, if a client requests to be transferred to an employee or department, the operator opens the phone book, presses the "transfer" button opposite the employee, then dials an internal number on the phone and transfers the call. That is, the operator translates manually, and in the telephone directory, clicks only for accounting statistics, specifying the call subject of the transfer result, that is, what can be obtained only from a conversation with the client.

It would be desirable that the translation was carried out from the telephone directory itself, when you click on the "transfer" button. Since this is a web application, I see it as follows: when I press a button, an application is launched on the server that instructs the tit to transfer the call.

Naturally, I started by reading the documentation. At the moment, I am looking in the direction of JTAPI, which, in theory, allows me to implement what I need. But since I previously encountered cisco only in the form of a phone in my workplace, I want to ask the pros for advice, maybe I missed something, are there simpler solutions?
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The company uses this product: Cisco Unified Contact Center Express