The computer program may also include {HEAD ~ a code segment} for communicating with a mobile switching station and {TAIL ~ remote service providers} 
for communicating with
The computer program may also include { HEAD ~ a code segment } for communicating with a mobile switching station and { TAIL ~ remote service providers }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL