Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, REFER, MESSAGE, OPTIONS Supported: 100rel, norefersub Content-Length: 0 ]]> ;tag=[call_number] To: "30" ;tag=1 Contact: [last_Call-ID:] CSeq: 15540 NOTIFY Event: dialog Subscription-State: terminated;reason=noresource Allow-Events: dialog, refer User-Agent: Prima 2.00.00 Content-Length: 0 ]]>