A CL65 PIC IS TAKEN TO TASK FOR CONTINUING TO TAXI ON TXWY J AFTER RAMP CTL ADVISES A TAXI TO SPOT X OFF TXWY J TO THE RAMP AT CVG.

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WHEN TAXIING AFTER LNDG AT CVG WE WERE INSTRUCTED TO 'TAXI VIA TXWY J AND CONTACT RAMP.' WHEN WE CONTACTED RAMP AT J5 WE WERE ASKED TO 'CONTINUE ON TXWY J AND ENTER AT SPOT X' AND TO 'GIVE GND A COURTESY CALL.' I FELL FOR THIS AND FOUND THAT THE GND CTLR WAS UPSET BECAUSE WE HAD FOLLOWED THE RAMP CTLR'S INSTRUCTIONS -- WHEN TXWY J BELONGED TO GND CTL. THERE WAS NO CONFLICT WITH ANY OTHER TFC; BUT THE GND CTLR DID NOT LIKE RAMP CTL TRYING TO CTL TFC ON HIS TXWYS. SUPPLEMENTAL INFO FROM ACN 484730: WE WERE INBOUND FROM THE LNDG RWY 18L; AND WERE TOLD BY E GND CTL (121.3) TO TAXI TXWY T; TXWY J TXWY J5 TO COMPANY RAMP. AT TXWY J5; WE TURNED INTO THE RAMP AND CONTACTED RAMP CTL (122.82). WE WERE TOLD 'TELL YOU WHAT; ENTER SPOT X; AND GIVE GND A COURTESY CALL; IF ABLE.' WE TURNED BACK ONTO TXWY J; SWITCHED BACK TO E GND CTL (121.3); AND DUE TO FREQ SATURATION; REALIZED WE SHOULD BE ON W GND CTL (121.7); WHICH I SWITCHED TO IMMEDIATELY. GND CTLR INFORMED US THAT WE SHOULD NOT HAVE MOVED WITHOUT HIS PERMISSION; AS THE TXWYS BELONG TO HIM; NOT COMPANY RAMP CTL. USE OF THE WORDS 'COURTESY CALL' BY COMPANY RAMP CTL LED US TO BELIEVE THE MOVEMENT HAD BEEN COORDINATED; WHICH IT HAD NOT.