Only real downside other than the NAT issue you already mentioned is a poorly designed phone that may fall off the network and not re-register for hours etc.
A longer registration period is ideal and its good to try to get it to the longest possible value feasible based on network conditions, phones etc.



On Wed, Nov 4, 2015 at 4:23 PM, Nathan Neulinger <nneul@mst.edu> wrote:
Besides NAT traversal timeouts (for me, rare case that I can deal with specially) - is there any downside to setting an
expires of say 1800 with deviation of 600 or so - instead of what appears to be the default of 30 seconds, which is
resulting in an excessively high volume of REGISTER requests on a continuous basis?

-- Nathan

------------------------------------------------------------
Nathan Neulinger                       nneul@mst.edu
Missouri S&T Information Technology    (573) 612-1412
System Administrator - Architect

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