CLRNC INTERP PROBLEM WHERE FLC READBACK XING ALT AT 1 INTXN; CTLR CLAIMED READ BACK FOR DIFFERENT INTXN. MISSED XING RESTRICTION.

Narrative

FLT WAS CLRED TO DSND AND CROSS WOMAC INTXN ON THE MACEY ARR INTO ATLANTA. THIS CLRNC WAS UNDERSTOOD BY BOTH PLTS AND READ BACK TO THE CTLR. THE ALT ALERTER WAS SET FOR 13000 FT AND THE RESTRICTION WAS PROGRAMMED INTO THE FMS. JUST PRIOR TO MACEY WE RECEIVED A TCASII TA ON AN ACFT LESS THAN 2000 FT ABOVE US. ATC REQUESTED OUR POS WHICH WE RPTED AS DIRECTLY OVER MACEY. OUR ALT WAS 14600. ABOUT 2 MINS LATER THE CTLR ADVISED US THAT WE HAD BEEN CLRED TO CROSS MACEY AT 13000 FT. THE CAPT TRIED TWICE TO EXPLAIN THAT WE HAD COPIED AND READ BACK 'WOMAC AT 13000' WHICH THE CTLR DID NOT UNDERSTAND. HE CONTINUED TO MISUNDERSTAND THE CAPT TO BE SAYING 'MACEY.' I CLARIFIED THIS TO THE CTLR BY SPELLING 'WOMAC' TO HIM. HE SAID WE DID NOT READ BACK 'WOMAC.' WE BOTH BELIEVE WE WERE CLRED TO CROSS WOMAC AT 13000 FT AS THE STAR SAYS TO EXPECT. A CONTRIBUTING FACTOR IS THE POOR QUALITY OF TRANSMISSIONS RECEIVED FROM THIS CTLR. HE WAS VERY SOFT SPOKEN AND OTHER CTLRS AND ACFT TRANSMISSIONS IN THE BACKGND WERE QUITE LOUD. HE ALSO APPEARED TO BE HAVING TROUBLE UNDERSTANDING OUR TRANSMISSIONS.