[Freeswitch-users] Custom NOTIFY message in FS

Hi! Is there any way that a custom NOTIFY message can be built and sent in FS without cutting code? I have a bunch of Linksys SPA's and I want to implement the Resync_From_SIP option, which enables a resync to be triggered via a SIP NOTIFY message. (ie Event: resync in the NOTIFY message) Is this at all possible? Thanks!