[SR-Users] new feature: option to remove contacts based on sip nat keepalives

[Juha Heinanen]

daniel,

you wrote:

  This feature should be useful in mobile networks, to avoid stacking lot 
  of invalid contacts which could result in lot of branches causing many 
  retransmissions.

why would a sip ua that runs in a mobile network device be configured to
use udp instead of tcp?

poor battery life seems to be a big problem in so called smart phones.
wouldn't this kind of active pinging make it even worse?

-- juha