LOSS OF RADIO COM RESULTED IN A NEAR MISS.

Narrative

I WAS WORKING ARTCC AS THE RADAR/INTERPHONE CTLR. I RECOGNIZED A POTENTIAL CONFLICTION BTWN A WDB #1 AND A WDB #2 AT FL330 ON CONVERGING COURSES. WHEN THE L1011 ENTERED MY AIRSPACE; COM HAD NOT BEEN ESTABLISHED. I THEN CALLED THE PREVIOUS SECTOR TO RE-ATTTEMPT COM XFER; WITH NO SUCCESS. I THEN ASKED MY SUPVR TO INITIATE A COMMERCIAL RADIO CALL TO WDB #2 FLT. THIS TOO WAS UNSUCCESSFUL. THEREAFTER; THE XFERRING CTLR FOR THE WDB #2 FLT INFORMED ME THAT THEY HAD ALSO LOST COM WITH THE FLT. A COMMERCIAL RADIO CALL TO WDB #2 FLT WAS ALSO UNSUCCESSFUL. I INFORMED MY SUPVR THAT THE SIT WAS GETTING CRITICAL (ABOUT 10 MINS TO TARGET MERGE) I ATTEMPTED TO ESTABLISH COM WITH ATC EMER GUARD FREQ 121.5 WITH NO SUCCESS. I ALERTED THE ZKC RECEIVING CTLR OF THE SIT. NEXT; I OBSERVED THE 2 TARGETS MERGE; AND COME OUT THE OTHER SIDE. SUPPLEMENTAL INFO FROM ACN 429530: TCASII ON EITHER ACFT WOULD HAVE STOPPED THE ENTIRE CHAIN OF EVENTS. SUPPLEMENTAL INFO FROM ACN 429610: NEITHER ACFT WAS EQUIPPED WITH TCASII.