For example, rather than blocking a data call, {TAIL ~ unused voice resources} can be allocated to {HEAD ~ a data call request} 
For example , rather than blocking a data call , { TAIL ~ unused voice resources } can be allocated to { HEAD ~ a data call request }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD