Okay, I don't understand that. I had switched back to the status from yesterday evening (backups) and now when I wanted to record the telephone traffic on OpenWRT using tcpdump, the telephone rings.
Was that a line problem at Telekom that lasted for days? I almost want to believe that because I trust OSS and Linksys/OpenWRT more than Magenta. For now I consider this to be done. Until the next telecom outage.
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Okay,
sngrep is a toll that can see sip messages across your Openwrt router.
install it via ssh opkg install sngrep
run it via typing sngrep
You will see all messages being sent to and from your FreePBX, it saves you having to do lots of other things.
Don't you read the entire thread here? We already had that!