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