signaling said PBX to connect said adapter through said {HEAD ~ PBX} to said {TAIL ~ voice message system}, 
to
signaling said PBX to connect said adapter through said { HEAD ~ PBX } to said { TAIL ~ voice message system } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH