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  1. 100s of Robo-Calls - how can i stop this?

    Thanks! Reading your comment gave me an idea. Wouldn't it be a sufficient solution for 3CX to implement something like "custom strings"? Let's say the admin could add an individual string to the sip traffic of all devices so that they could identify themselfs at the firewall level and get...
  2. Blocking "User Agents" similar to "friendly-scanner"

    Yes that's the part i dont fully understand. I disabled "Allow calls from/to external SIP URIs". Still i reviece those calls.
  3. Blocking "User Agents" similar to "friendly-scanner"

    thank you very much! is a firewall block the only option to avoid such attacks? is't there a an option in 3cx to disable direct sip calls completely? or change something to only allow autorized sip calls to enter the pbx?
  4. 100s of Robo-Calls - how can i stop this?

    I get calls almost every minute all day long. These calls are not coming from the trunk, but they are direct sip calls with fake caller id's like "test" or "1234567899". The robot call is no message on my mailbox, just 14 seconds of silence. What can i do to stop those calls? How can i...
  5. Blocking "User Agents" similar to "friendly-scanner"

    Oh such a List would be great! Please be so kind and share it with us! Thank you very much!
  6. BLF Buttons on GrandSteam Wave App?

    I think the GrandSteam Wave App is the best VOIP App out there. It's free and supports BLF. Those work great with Asterisk based PBXs, unfortunately i couldnt get 3CX PBX to show the presence status of other extensions. Anyone has some experience with Grandstream Wave and 3CX?
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