Good Afternoon John, Maximizer has a limited capability to detect incoming calls as explained below:
support.maximizer.com/scripts/support.cfg/php.exe/enduser/std_adp.php?p_sid=pkh1X3Ai&p_lva=&p_refno=001207-000073
However the incoming call detect is not a supported function so if it doesn't work for your specific system then I am afraid that Maximizer Software will not provide any additional assistance and will not accept escalated cases from a business partner related to it.