There seems to be a hard limit on incoming calls set a certain way- a telephone engineer told me about this, but I don't know the specifics. When on a call, the moment the call hits 15 minutes it drops. Does anyone know the specifics of this behaviour, and how to change it?
Asterisk 15-minute drops calls
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Best Answer
This is a classic symptom of a NAT session timing out on a firewall. Options without changing your firewall: