Cisco Firepower SIP

[Learnercisco]

Hi Tech people,

I have  two-Way audio problem in two IP phones. The remote phone is located in the partner network which connected to the Switch and then firewall in between. Two IP phones are registered with CUCM.  

The physical connection is :

IP Phone--->Access Switch---->Cisco firepower(2130)----Layer 3 switch-----Call Manager.

FMC Version 7.0 & FTD 6.4

i have disabled the SIP inspection on the FTD but problem is still there.

'configure inspection sip disable'

RTP and SIP ports are allowed in the Firewall. 

i can see the RTP Packets in the Wireshark capture. 

Somebody face this problem in their environment ?

Thanks in advance

[balaji.bandi]

Are you managing FTD using FMC, then you need to use flexconfig :

https://www.cisco.com/c/en/us/td/docs/security/firepower/623/fdm/fptd-fdm-config-guide-623/fptd-fdm-advanced.html

https://wrmem.net/index.php/2020/05/08/disable-sip-inspection-on-firepower-through-flexconfig/