What are the pros/cons of changing defaultexpiry in sip.conf?
We were receving a lot of registration timed out messages with our
VoIP provider. Occasionally, we could not receive or initiate calls for short periods of time when we were receiving these messages.
I changed defaultexpiry to 300 from the default 120.
This seemed to improve things, but did not complete resolve our
What can go wrong if I change defaultexpiry to 3600?
Does this mean that if we lose our Internet connection to our provider,
we may not initiate another registration for one hour?
Is there a document that describes in details the underlying semantics of changing this value, or any value in sip.conf? (I have read Van Meggelen et. all, but I need more detail)