This examle shows Call Blocking Capabilities. It makes the sip servlet acts as
Based on the from header it blocks the call if it founds the address in its hard coded black list.
Creates a new instance of CallBlockingSipServlet
logger.info("the call blocking sip servlet has been started");
logger.info(fromUri + " has not been blocked, we proxy the request");
logger.info("Call Blocking doesn't handle BYE requests");
logger.info("the call blocking sip servlet has been initialized");