<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><P>Hi </P>
<P> </P>
<P>i use ccm 4.1.3 in lan. But also i made an aggrement with an isp(i have already have internet conection with the same isp) so that i will use their backbone for international calls.</P>
<P>CCM is behind a FW. Also for pstn calls i have on 2821 gateway . CCM and my gateway has mgcp connection</P>
<P> </P>
<P>what should i do on FW and CCM for route my international calls to the isp/ </P>
<P>How the ip phones will send up packets to the softswitch of isp</P>
<P>Also which ports for ip phones and CCM do i have to open from firewall</P>
<P> </P>
<P>design is below</P>
<P> </P>
<P>CCM > CISCO2821 gateway(mgcp) > ip phones </P>
<P> </P>
<P>Firewall > internet router with ISP </P>
<P> </P>
<P> </P>
<P> </P>
<P> </P>
<P> </P></div><br>
<hr size=1>No need to miss a message. <a href="http://us.rd.yahoo.com/evt=43910/*http://mobile.yahoo.com/mail
">Get email on-the-go </a><br>with Yahoo! Mail for Mobile. <a href="http://us.rd.yahoo.com/evt=43910/*http://mobile.yahoo.com/mail
">Get started.</a></body></html>