can't hear voice when microsoft team to cisco phone throught check point firewall.

[kyithuaung2023]

Dear All,

I have an issues that is I can't hear voice when I call Microsoft team to cisco phone (there is sip, cucm server) through to firewall. Do you have any solutions or similar case. I got microsoft team requested some changes that is disable to SIP ALG. I already disabled and updated latest hot fix version in check point (HOTFIX_R81_10_JUMBO_HF_MAIN Take: 110). 

My issue is following as;

          Cisco Phone to Cisco Phone - OK

          Cisco phone to Microsoft team - OK

          Miscrosoft Team to Cisco Phone - can reachable , ringing and pick up but can't hear.

Could you please any solutions and suggestions help for me?

Thanks and Regards,

Kyi Thu Aung

kyithuaung007@gmail.com