Hi all I've done the same where SER can pass calls to my CISCO and Lucent EXCEL switch, but when EXCEL tries to pass calls to SER (even when I placed the src ip into the MYSQL trusted table), it seems like the call just hung there. Also, instead of using the default SIP port (5060), I have changed it to something else since the internet in China doesn't provide 100% non-restricted communications, they sometime block or filter ports & data. Based on this, I have the EXCEL sent data based on my customized port (eg. 5000). but when I view the /var/log/messages, it passes the call to my IP PHONE using standard 5060 port. How do I go about solving this??? Also, I'm using Mediaproxy for NAT environment, if calls from Cisco/Excel were to sent to SER (while SER is authenticating the gateways via trusted table), how would the calls be proxied and sent to an IP PHONE running behind a router?? I need the calls to be proxied! Does anyone have a solution for this?!? Please advise!! Best Regards, Samuel Yeung Quoting Iqbal <iqbal(a)gigo.co.uk>uk>: ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.