Fortinets have a SIP session-helper. Sometime this causes issues, try turning it off. To do this you need to enable telnet on the forinet management interface. Telnet into the cli and type the following
config system session-helper edit 12 set port 5066 end Instead of turning this off or taking it out I am changing the port so it will not affect 5060 anymore. This way you can put it back if this doesn't work for you. John Bittner Simlab.net -----Original Message----- I have a customer with a Fortinet Firewall that is having stability issues with Asterisk and SIP endpoints (PAP2T) outside his network. The first issue I see is that Asterisk sees all phones as the IP address of the Fortinet. Since the parameter "localnet" defines the local network and that address falls in that range, how will Asterisk treat the endpoints? I have "nat=yes" for all phones and "canreinvite=no" as well. The "externip" parameter is set to the outside public IP address. Still we have calls with one way audio. This is the first setup with a firewall that rewrites the IP address of the endpoint so I do not know how that is affecting the packet flow. On my other servers I can always see the public IP of the endpoint. -- Telecomunicaciones Abiertas de México S.A. de C.V. Carlos Chávez Prats Director de Tecnología +52-55-91169161 ext 2001 _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users