[Freeswitch-users] Is it possible to force FreeSWITCH/Sofia to use only one port TLS?

https://wiki.freeswitch.org/wiki/SIP_TLS#Limitations_of_the_Freeswitch_TLS.2... mentions that lib_sofia and FreeSWITCH uses two ports, by default, for TLS (client -> server for registration and client to server signaling, and server->client for NOTIFYs, etc.). In one setup, I need to get CSIPSIMPLE (an Android SIP client with ZRTP support) working. It appears to accept the server->client connections, but will not ring, etc. for incoming calls. This does seem to be a bug there, and it only exists with TLS (not tcp/udp). So, is it possible to force FreeSWITCH/Sofia to use the client->server connection for server->client NOTIFYs? Thank you, Trever