;tag=[call_number] To: sut Call-ID: [call_id] CSeq: 1 SUBSCRIBE Contact: sip:sipp@[local_ip]:[local_port] Max-Forwards: 70 Subject: Performance Test Event: presence Expires: 600 Accept: application/pidf+xml, application/xpidf+xml Allow-Events: presence, refer Content-Length: 0 ]]> ;tag=[call_number] To: sut Call-ID: [call_id] CSeq: 2 SUBSCRIBE Contact: sip:sipp@[local_ip]:[local_port] Max-Forwards: 70 Subject: Performance Test Event: presence Expires: 0 Accept: application/pidf+xml, application/xpidf+xml Allow-Events: presence, refer Content-Length: 0 ]]>