[Asterisk-Users] SIP qualify time - best practices?

[Bryan Field-Elliot]

For the typical home user who has a SIP ATA behind (usually) a Linksys home router/firewall, what's the best practice "qualify=" time we should be running on the server, to keep the home user's NAT happy?

The default, 2 seconds, is way too short (generates too much net traffic).

I am wondering how high we can go, and still make the majority of our customers' home nat's happy. 1 minute? 2 minutes? 10 minutes?

Thanks for opinions,

Bryan

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