Mysterious entries in CDR

I am getting a lot of mysterious entries in CDR

It appears none are successful, but it is annoying - all appear to be going to congestion

Mon, 3 Jan 2022 18:59 1641236390.4324 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 18:50 1641235854.4323 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 18:41 1641235309.4322 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 18:32 1641234771.4321 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 18:31 1641234671.4320 111 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 18:23 1641234203.4319 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 18:14 1641233642.4318 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 18:05 1641233109.4317 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 17:56 1641232582.4316 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 17:47 1641232041.4315 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 17:40 1641231610.4314 100 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 17:38 1641231480.4313 8001 Congestion s [from-sip-external] ANSWERED 00:13
Mon, 3 Jan 2022 17:22 1641230561.4312 120 Congestion s [from-sip-external] ANSWERED 00:13

from-sip-external is used for incoming calls that do not match any configured trunks. I often see these calls with a server is not properly locked down (firewall, SIP guest/anonymous call settings).

Are you accepting unknown or anonymous calls?

Thanks

the pbx is locked down with Firewall

where do I set SIP guest/anonymous settings?

repsonsive firewall is active and fail2ban

Are you accepting unknown or anonymous calls?

Anonymous/Unknown numbers - yes

Then don’t :wink:

How about customers who call with withed numbers?

That’s not the same. That’s the CallerID presense or not

made sure it is all blocked

still get load of entries in CDR

Call Date Recording System CallerID Outbound CallerID DID App Destination Disposition Duration Userfield Account CDR Table CDR Graph
Tue, 4 Jan 2022 15:57 1641311847.4687 3301 Congestion s [from-sip-external] ANSWERED 00:13
Tue, 4 Jan 2022 15:55 1641311725.4686 3301 Congestion s [from-sip-external] ANSWERED 00:13
Tue, 4 Jan 2022 15:53 1641311601.4685 3301 Congestion s [from-sip-external] ANSWERED 00:13
Tue, 4 Jan 2022 15:51 1641311482.4684 3301 Congestion s [from-sip-external] ANSWERED 00:13
Tue, 4 Jan 2022 15:49 1641311359.4683 3301 Congestion s [from-sip-external] ANSWERED 00:13
Tue, 4 Jan 2022 15:47 1641311239.4682 3301 Congestion s [from-sip-external] ANSWERED 00:13
Tue, 4 Jan 2022 15:45 1641311118.4681 3301 Congestion s [from-sip-external] ANSWERED 00:13
Tue, 4 Jan 2022 15:43 1641310992.4680

Provide a SIP trace and call logs

set both to “no” in Asterisk SIP Settings and your problem will go away.

Thank you

That seems to have solved it