code: private void resetOutboundInterfaces() {
  		List<SipURI> outboundInterfaces = sipNetworkInterfaceManager.getOutboundInterfaces();
  		for (SipContext sipContext : applicationDeployed.values()) {
  			sipContext.getServletContext().setAttribute(javax.servlet.sip.SipServlet.OUTBOUND_INTERFACES,
  					outboundInterfaces);
  		}
  	}
docs: set the outbound interfaces on all servlet context of applications deployed