Is it possible to send SIP NOTIFY messages to * users through asterisk through an external application? Does that external application have to be a registered * user in order to send the NOTIFY message to other users. I have tried sending unsolicited NOTIFY messages to * but the application receives a Method not Implemented back from * Please advise as the best way to proceed, in order to have * route SIP NOTIFY messages from an external application. Thank you, in advance. -John