Sample 1

Topology

sip.cfg

listeners :
{
interfaces = (

,

);

/****************************************************************************

• The default interface address used to send out requests if not explicitly*
• set using the java script sendInterfaceAddress() function. This is also *
• used by Karoo Bridge command line utilities like the --reset-log-level *
• to send the SIP RPC request to the running Karoo Bridge instance. *
  ****************************************************************************/

default-interface-address = "10.0.40.5";

/****************************************************************************

• The default interface port used to send out requests if not explicitly *
• set using the java script sendInterfacePort() function *
  ****************************************************************************/

default-interface-port = 5060;

/****************************************************************************

• The low value marker for the TCP client port range *
  ****************************************************************************/

sip-tcp-port-base = 10000;

/****************************************************************************

• The high value marker for the TCP client port range *
  ****************************************************************************/
  sip-tcp-port-max = 15000;

/****************************************************************************

• The low value marker for the RTP proxy port range *
  ****************************************************************************/

rtp-proxy-port-base = 30000;

/****************************************************************************

• The high value marker for the RTP proxy port range *
  ****************************************************************************/
  rtp-proxy-port-max = 60000;

/****************************************************************************

• The read timeout for RTP Proxy before it decides to automatically *
• tear down the RTP channel. This is expressed in seconds. *
  ****************************************************************************/
  rtp-proxy-read-timeout = 600;

/****************************************************************************

• The number of worker threads for the RTP proxy. Take note that Karoo *
• Bridge uses async IO and the number here does not limit the number of RTP*
• channels that can be supported. This threadpool will be shared equally *
• by all RTP channels. 30 threads has been tested to be enough to cater *
• to 1000 RTP proxy sessions *
  ****************************************************************************/
  rtp-proxy-transport-thread-count = 30;

/***************************************************************************

• Karoo has a built-in STUN server. STUN would only work if the server *
• Karoo Bridge is installed in has two or more NICs directly routable from*
• the WAN. The addresses must be different. Virtual IP is also ok but is*
• not advised. If you don't want to use the default port you can include *
• a port with the address separated with a colon. *
• Example: stun-primary-ip = 10.0.40.5:3478 *
  ***************************************************************************/
  stun-primary-ip = "";
  stun-secondary-ip = "";

/***************************************************************************

• Karoo bridge uses libfreeswitch for sip trunking and transcoding *
• functions. These values set the listener port for the internal event *
• layer handler. Since freeswitch is configured independently, the sip *
• address used by freeswitch must be made known to Karoo as well *
  ***************************************************************************/
  switch-event-listener-port = 9000;
  switch-sip-listener-ip = "10.0.40.5";
  switch-sip-listener-port = 5080;
  switch-sip-context = "sofia/karoo";

/****************************************************************************

• The packet rate ratio allows the transport to detect a potential DoS *
• attack. It works by detecting the packet read rate per second as *
• designated by the upper limit. If the value of packet rate is 50/100, *
• the maximum packet rate before the SBC raises the alert level if a *
• potential denial of service attack is 100 packets per second. *
• When this happens, the transport layer checks if there is a particular *
• IP that is sending more than its allowable rate of 50 packets per second.*
• If the sender is violating the threshold, it will be banned for 1 hour *
• which is the third parameter of 3600 seconds. *
  ****************************************************************************/
  packet-rate-ratio = "50/100/3600";

/*****************************************************************************

• One may statically define a list of known IP addresses or networks so that*
• they get immunity against the packet-rate-ratio algorithm. This would *
• normally contain the ip addresses of known traffic sources or destinations*
• like the local iPBX or trunk gateways. For Call Centers with predictive *
• or progressive dialers in the network, it would be wise to also white-list*
• those applications. *
  *****************************************************************************/
  packet-rate-white-list = (
  /*
  Unknown macro: {source-ip = "192.168.1.10";}
  , */
  Unknown macro: {source-network = "1.1.1.1/4";}
  );
  };

user-agent :
{
/****************************************************************************

• Show your appreciation by not changing this value *
  ****************************************************************************/
  user-agent-name = "OSS Karoo Bridge";

/****************************************************************************

• Karoo bridge uses the contact header to store some states about sip *
• session. It can either do thi by storing a unique id as the user info of*
• the contact-uri or by storing it as a contact paramameter. If your *
• switch/pbx supports paramaters in contact, setting the two parameters *
• below to true is the recommended value. *
  ****************************************************************************/
  register-state-in-contact-params=false;
  dialog-state-in-contact-params=true;
  };