Providing menu and {HEAD ~ other services} for an information processing system using a telephone or {TAIL ~ other audio interface} 
Providing menu and { HEAD ~ other services } for an information processing system using a telephone or { TAIL ~ other audio interface }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL