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  1. Troubleshooting Kamailio DNS Settings

    Problem VoipNow 3, which by default has DNS caching enabled, comes with a different version of Kamailio. The problem is that, in some situations, customers manually set an IP…
    4PSA Knowledge BaseJul 21, 2015
  2. How to Debug Asterisk and Kamailio

    disable SIP debugging using: For VoipNow Professional 2 asterisk -rx "sip set debug off" For VoipNow Professional 1: asterisk -rx "sip no debug" The Kamailio Logs These logs…
    4PSA Knowledge BaseJan 06, 2016
  3. Fail2Ban for Kamailio on VoipNow 4.0.0

    http://kamailio.org/docs/modules/1.5.x/pike.html module is used to log and throttle incoming request IP addresses. The messages logged by Kamailio look like this: 1449744585: L1 Pike block from…
    4PSA Knowledge BaseDec 14, 2015
  4. How to Configure TLS Support for Snom

    ) do the following: STEP 1: Open /etc/kamailio/kamailio.cfg STEP 2: Check the value of the verify_certificate parameter for the TLS module: # Check an user certificate…
    4PSA Knowledge BaseJul 21, 2015
  5. How to Use a TLS Certificate in VoipNow Professional

    1024 STEP 3: Next, change the line below from the /etc/kamailio/tls/user.conf file: commonName = your_server_ip by replacing your_server_ip with your server's IP address/hostname…
    4PSA Knowledge BaseJul 21, 2015
  6. Troubleshooting Calls and Debug Steps

    infrastructure layer where the call seems to fail: Kamailio Asterisk (Dialplan or Asterisk Applications) Kamailio Troubleshooting Make sure your SIP traffic reaches Asterisk…
    4PSA Knowledge BaseJan 06, 2016
  7. How to monitor VoipNow with Homer

    to analyze. The Capture Agent feeds the capture node with SIP signaling, Logs, RTCP and more, using the HEP protocol (i.e. Homer Encapsulation Protocol). Asterisk and Kamailio natively…
    4PSA Knowledge BaseApr 22, 2016
  8. How to detect abnormal traffic using Pike

    Applies to VoipNow 4.0.0! VoipNow 4.0.0 comes packed with Pike. Pike is not a programming language. It's a module implemented in Kamailio that keeps track of all incoming…
    4PSA Knowledge BaseDec 21, 2015
  9. Understanding codec negotiation

    . Codec negotiation in VoipNow As mentioned above, because the audio path includes Asterisk, an extra negotiation occurs. The SIP signalling also passes through Kamailio. In the case…
    4PSA Knowledge BaseJul 21, 2015
  10. How to Use VoipNow 3 Behind a Firewall

    The SIP port used by Kamailio to accept connections from phones. 5050 The Asterisk port. 5061 The TLS SIP port used for encrypted connections. 5222, 5280, 5269 The IM…
    4PSA Knowledge BaseJul 21, 2015