Quote Originally Posted by digger16309 View Post
That's what I meant - the ATA SIP register expiration.

Why is that set at 1 hour intervals?

Mostly, I'm just curious about it.
3600 secs is the default value specified by most ATA/SIP phone manufacturer
I do not recall if there is a specific value recommended by any RFCs
since you're curious, you can consult my library, and let us know