Maxexpiry range

I have a simple question (I hope):

Back Story: I am porting numbers into Sangoma SIPStation, but it may take 5 or 6 days to complete the port. I want to maintain registration with my soon-to-be former trunk provider for 6 days.
On my trunks, maxexpiry is set to 3600 (1 hour), and after an hour the old trunk goes down until I disable/reenable the trunk in FreePBX. Then I get another hour. Rinse/Repeat…

Question: Would bad stuff happen in I set maxexpiry to 518400 (6 days)? Is there a range for the maxexpiry parameter?


No, but the provider might well negotiate it down to even less than 3600. (I’m assuming it is handled as a long integer, internally, so there won’t be a numeric overflow.)

See the paragraph starting “The registrar MAY choose” on RFC 3261: SIP: Session Initiation Protocol

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