rfc7614.txt:Robert Sparks:nostrum:usa:14:aug:2015:UNKNOWN:kwd,seccons,ianacons:draft-ietf-sipcore-refer-explicit-subscription:2003-08-07:2003-01-10:63:56:0:88:207:3:2002-4-12:0::2002-4-12:273:2003-11-11:94