Issues with second call

I have an Asterisk over FreeBSD, and the issue is that whenever users dials a call, he doesn’t show as busy to the queue.

It only happens when the agent makes a call. The incoming call comes into the second line of X-Lite.

Can somebody help?

I searched for someting like that on the forum, but found nothing similar. If there’s any I haven’t found, please let me know too.

Also, the second line must not be disabled.