it seems that the use of renivite in sip peer configuration is very much dependent on sip endpoint have read of what seems defnite "no no" when using the cisco ata 186 it seems eminently preferable from a networking / performance view for the media data transfer to be between the two endpoints and not using the proxy, especially when all hosts are behind a NAT was wondering if the list could provide me with general view on the use of reinvite given endpoints of cisco 7940 ip phones (latest 7.1 sip image) and cisco 1760 router GT