[Ekiga-list] Ekiga cant connect behind adsl

[jtd <jtd mtnl net in>]

Hi all

Ekiga 3.2.5 on standard lenny.
Everything works fine on a lan between two machines. But behind an 
adsl modem, with ports forwarding as per 
http://wiki.ekiga.org/index.php/Internet_ports_used_by_Ekiga
neither is able to connect to the other. On recieving a call the 
accept call  pops up. on clicking accept, the user is immediately 
brought back to the default screen (local video). Both machines are 
on adsl on two different isps at two different locations. 
Telnet to port 1720 from either machine is successful (after port 
forwarding).
Also %gconf.xml history entries show client2 0 0 0 0 for the 
unsuccessful tries, which is 100% behind adsl. OTOH calls on the lan 
show the correct ip client2 192 168 xxx yyy 

Both machines are at remote locations and i have only ssh console for 
debugging. -d4 produces no output.

Any suggestions?

-- 
Rgds
JTD