AN ACR PLT TAXIED ONTO A TXWY THAT HE LATER LEARNED HE WAS TO REMAIN CLR OF -- ANOTHER COMPANY ACFT BLOCKED HIS PATH OUT OF THE RAMP. THE RPTR ALLEGES THAT GND CTLR'S INSTRUCTIONS DID NOT CONTAIN ANY RESTR FROM USING TXWY R.

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AFTER ENG START WE CALLED FOR TAXI. WE HEARD GND CTL CLR US TO 'TAXI TO RWY 26R; HOLD SHORT OF TXWY C.' AFTER STOPPING SHORT OF TXWY C ON TXWY R; WE CHANGED OVER TO PHX TWR (N). A MIN OR 2 LATER; TWR INSTRUCTED US TO RETURN TO GND CTL. GND CTL ASKED US WHY WE WERE ON TXWY R. I REPLIED WE WERE TOLD TO HOLD SHORT OF TXWY C; WHAT DO YOU WANT US TO DO NOW? GND CTL THEN SWITCHED US BACK TO TWR. WE DEPARTED SHORTLY THEREAFTER. HAD WE HEARD A TAXI CLRNC SUCH AS TAXI TO RWY 26R; HOLD SHORT OF TXWY C AND REMAIN CLR OF TXWY R; WE WOULD HAVE HAD NO RECOURSE BUT TO WAIT FOR COMPANY OUT OF A NEARBY GATE TO TAXI; THEN PROCEED TO SPOT XYZ. WE COMPLIED WITH THE CLRNC WE BELIEVE WE RECEIVED -- NO ACFT WERE PUT INTO 'HARM'S WAY.' A BETTER CLRNC WOULD HAVE BEEN; 'TAXI TO SPOT XYZ. HOLD SHORT OF TXWY C.' THE TWR CHIEF WAS VERY UPSET -- CALLED OUR COMPANY AND INDICATED THIS HAS OCCURRED MANY TIMES. IF THAT IS TRUE; THEN HE SHOULD HAVE COMMUNICATED THIS TO OUR CHIEF PLTS SO THIS OFTEN MISUNDERSTOOD CLRNC WOULD BE A CAUTION IN OUR 'READ BEFORE FLY' BOOK.