bs01

Thanks for the suggestions. The extensions on the m3s all have the correct passwords as they are usually registered on the pbx and work without problem. The blacklisting also only occurs at irregular intervals and up until now each time it was a different extension causing it each time. I will try increasing the number of tolerated attempts and see if that solves it. I still think something strange is going on with the IPs though. The second IP should not be in the log at all as it is no longer attached to the phone. Any ideas where that might be coming from? Or is this not relevant?

We have noticed over the past few days that our IP (dynamic) is being blacklisted because of failed SIP registrations. I can't work out why this is happening, but it seems to be a problem with an expired IP still being stored somewhere. The IP address 92.227.31.* has been blacklisted for 60 minutes because there were 4 unsuccessful authentication attempts (sip). REGISTER sip:***.eu SIP/2.0 Via: SIP/2.0/UDP 78.51.207.*:64567;branch=z9hG4bKe3t97xvquk3criszb Max-Forwards: 70 From: <sip:3431@***.eu>;tag=g9w.sbs To: <sip:3431@***.eu> Call-ID: 05ve9z3jk.wg. CSeq: 35604 REGISTER Contact: <sip:3431@78.51.207.*:64567;line=26375> Allow: INVITE, CANCEL, BYE, ACK, REGISTER, OPTIONS, REFER, SUBSCRIBE, NOTIFY, MESSAGE, INFO, PRACK Expires: 600 User-Agent: snom-m3-SIP/02.11 (MAC=0004132A****; HW=1) Content-Length: 0 The IP 78.51.207.* hadn't been assigned to the phone for about 18 hours. The current IP is 92.227.31.* and this is the one that is being blacklisted. Each time it seems to be adifferent extension. Is this a phone problem or a PBX problem? I don't want to disable blacklisting, but we can't have our phones deregistering every day because of this. I have tried to find the cause of the problem but nowhere is there any record of the old IP not expiring. Is there any way to whitelist phones apart from with the IP, which we can't because they are dynamic?

Thanks. I hadn't realised the ringback could also be selected on individual Hunt Groups, which works fine for us as we have distinct hunt groups for the UK trunks. This is preferable to changing to Message 180 or using differnt domains.

We have several trunks on the same domain, some of which are UK numbers and some of which are German numbers. The default tones for the system are set (intentionally) to German, but this means that callers into the PBX via a UK trunk are hearing a German ring tone. Ideally this should probably be a per-trunk setting, but is there perhaps a workaround for this which will avoid us having to set up a second domain for the UK trunks? Or is it posssible to force the provider to provide the ringback for external incoming calls?