inquire about zoom phone concurrent call limit

[BoBoAung]

Hi All,
Currently, we have four phone lines, and we've recently acquired 10 Zoom Phone Pro licenses to transition to Zoom Phone. Our plan is to port only two numbers from the existing four lines—one for incoming and another for outgoing calls. I would appreciate it if you could provide information on the maximum number of concurrent calls we can make and how the phone lines will be utilized for both incoming and outgoing calls.