[Serusers] performance on nat binding

[Richard]

Hi,

We have some SIP UAs behind NAT. It is capable of sending NOTIFY messages to
keep NAT binding fresh. I am thinking about two setups and would like to
know which one has less hit on ser's performance.

. Register with ser every 150 seconds, assume that most NAT udp binding is
180 seconds.
. Send Notify every 50 seconds, the NOTIFY includes the authentication nonce
from REGISTER message. So ser can verify that the message is real and send a
200 OK back.

Your option is appreciated.

Thanks,
Richard

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