I'm very new to Kamailio application and trying to setup the test environment for Android RCS client (https://github.com/android-rcs/rcsjta).
Parallelly we have deployed the Kamailio on ECS2 and able to make a call/text using any other sip clients.

Apparently, we had enabled the MSRP modules over TCP and tried to test with Android RCS. But getting stuck at the connecting screen.
Although we could see SIP exchange logs between two clients.

Can anyone help me in fixing this issue?