6-hour long calls?

FreePBX
1

(FreePBX 2.11.0.38)

I got an alert from shmooze a couple of days ago saying I was approaching my soft limit on my two SIP trunks with them. I instantly figured I must have been hacked but after a little investigation, I don’t think that’s the case.

The CDR spreadsheet from shmooze showed about nine calls that were each 21600 seconds long (6 hours). They were all from outside numbers I know (family, vendors, etc…) and they were all aimed at the same DID which is directly aimed at my internal extension.

I logged into my freepbx system and saw that the hard drive space was peaked. I deleted all the voicemails for the two accounts we have (mine and my business partner) and the space was back down to 25% or so as it usually is. (I didn’t need to keep them as they’re emailed to us anyhow).

I emailed shmooze and they said they have a 6-hour safety cutoff so that seems to have kicked in here (thankfully).

I think most of the calls were actually voicemails although I never got a giant voicemail emailed to me. They might have been bounced back from my gmail account if they were too big.

I’ve now set the max voicemail time to 5 minutes and tested it and it seems to be working. That might mitigate the problem but I’d sure like to know what else I can do to prevent this from happening.

2

We’ve set this as the default voicemail length in FreePBX 13 moving forward.

3

That’s great to hear. Makes a lot of sense. Any reason why this happens in the first place that you can think of?

4

People can call into your system and just leave long voicemails for hours at length just because.

5

After reading this post, I also want to restrict voicemail length to 5 minutes.

Under Settings> Voicemail Admin > Settings > maxmessage

do i set to 5 or 120? (Is it in minutes or seconds?)

Thanks tm

6

Seconds. It says this if you hover over the (?)

7

Thanks! I figured it was seconds.

It actually doesn’t say if you hover over the (?)

Says “Max message time length.”

Latest version of FreePBX Distro

8

In the sample configurations that I wrote for the Wiki, I recommend setting this and several other default Voicemail settings, but TheJames removed those references in the name of uniformity…

You can read the old version and my suggested defaults here:

http://wiki.freepbx.org/pages/viewpage.action?pageId=28180689