PureEngage On-Premises

I've an old version of agent desktop (or softphone) which was intergrated with Genesys ActiveX Desktop Toolkit. There were three line buttons in the old version and I found that the buttons are the components inherited from the ActiveX Desktop Toolkit. Currently I'm developing a new version of agent desktop and the interface is similar to the old one, with the use of PSDK 8.5. So, how can I configure the line number in my new agent desktop? I want to do exactly the same as the old version, which had three line buttons.

And the issue/problem is?

The problem is how can I differentiate the line? Because what I'm thinking now is I create three buttons, each name as Line 1, 2, 3, then I assign a parameter (let say isLine1Active, isLine2Active...) to each of them in my codes, and the default line is Line 1. So when calls come in, I set the parameter isLine1Active = true, when i want to do internal transfer, I use Line 2 and set isLine2Active = true. If the way to do so is like what I've mentioned, then I can have a lot of lines. I just don't know how to assign each line to each button. I know that the lines are under the same DN,

I think it depends on used PBX type, if the type allows it. If yes, you have to just develop code, which allows you to create new dialog with PBX or SIP gateway. There is nothing special related to the Genesys, because as you said, the "lines" are not physical.

Just note : from my point of view, it is not necessary to create three buttons for any lines. There is no advantages of that, just filling the customer needs.