FLC OF EMB120 RECEIVES CLRNC NOT MEANT FOR THEM BUT WITH THEIR CALL SIGN.

Narrative

WHILE ON ARR TO ATL; 40 MI SE AT 11000 FT; WE RECEIVED THE CALL 'ACR X DSND AND MAINTAIN 9000 FT HDG 080 DEGS.' WE ANSWERED THE CALL AND QUERIED THE ALT. THE RESPONSE WAS ACR X NOW HDG 090 DEGS 7000 FT. WE READ BACK THE CLRNC AGAIN AND I ASKED THE FO IF HE THOUGHT IT WAS 'STRANGE' TO BE DOING THAT AND HE AGREED IT WAS. NO COMMENTS ABOUT BLOCKED RADIO CALLS WERE MADE AND WE HEARD NO OTHER ACFT RESPONDING TO THE XMISSIONS. HDG 090 DEGS AND DSNDING THROUGH 10000 FT; ATL APCH CALLED US AND SAID 'ACR X WHAT ARE YOU DOING?' WE RESPONDED 'HDG 090 DEGS DSNDING OUT OF 10000 FT FOR 7000 FT PER YOUR REQUEST; ACR X.' APCH RESPONDED WITH 'THAT WAS FOR ACR Y; ACR X CLB IMMEDIATELY TO 11000 FT HDG 270 DEGS REJOIN THE ARR.' I HAVE DISCUSSED THIS WITH THE FO AND WE BOTH AGREED THE ORIGINAL AND SUBSEQUENT CALLS WERE FOR US (ACR X). OUR BELIEF IS ENHANCED BY THE REPEATED NATURE OF THE CALLS; 2-3 CALLS FOR HDG AND ALT CHANGES BY EACH PARTY. SUPPLEMENTAL INFO FROM ACN 363828: BOTH THE CAPT AND MYSELF FEEL WE WERE NOT AT FAULT FOR THE MISCOM AND SUBSEQUENT CHAIN OF EVENTS. NO OTHER ACFT WERE IN THE AREA AT THE TIME AND NOTHING ELSE WAS SAID IN LATER XMISSIONS.