Hello,
I have installed cisco phone (7960) and another SIP phone in the local network which is behind firewall.
I'm able to register both the phones with different usernames of iptel.org
I have tested both the phones seperately with echo tester. Thats working.
 
But, I am not able to make call from cisco phone to my sip phone and vice versa.
I am not getting any response for the invite. Not even 100 trying.
Is it because both the phones are working behind nat/firewall or some other reason.
 
can anybody in the public ip try san@iptel.org  or dheeraj@iptel.org ..?
 
Kind Regards,
Santhosh.S