Lots of calls within CDR report through 's [from-trunk]

General Help
1

Hi all,

Just had a look at the CDR report, and the usual calls are there, but there are lots of strange ones with called ID such as ‘401’ ‘4000’ ‘2000000’ ‘3333’ and so on. All of the calls last for 00:00 or a few seconds, and all have the destination ‘s [from-trunk]’.

Any clues what’s going on?

Thanks!

2

You are being probed disallow guest and anonymous calls in your sip settings and install and maintain an effective firewall/ids, the last bit should just be standard for everybody.