[SR-Users] Media server can't return ACK correctly

Alexandru Covalschi 568691 at gmail.com
Thu Feb 25 01:24:52 CET 2016

Hello everyone.

The setup is:
Carrier ip is CARRIER_IP
Public network Kamailio IP will be PUBLIC_IP
Private network Kamailio IP will be KAMAILIO_PRIVATE_IP
Private network Freeswitch IP is FREESWITCH_PRIVATE_IP


And freeswitch tries to actually send ACK back to PUBLIC_IP which he can't

Kamailio trace: http://pastebin.com/raw/1W1sXuUa
Freeswitch trace: http://pastebin.com/raw/KkZCwTTJ

request_route: http://pastebin.com/raw/Y17pXUGY
NATMANAGE route: http://pastebin.com/raw/0BpPDjN0
WITHINDLG route: http://pastebin.com/raw/5LpwSigF

I'm seeking help with that - what parameter I need to change/add to solve
Maybe it's a networking problem - but why then ACK reaches Freeswitch and
all other requests flow OK?

Thanks in advance, Alex

Alexandru Covalschi
VoIP engineer and system administrator
phone: +37367398493
web: http://abs-telecom.com/
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