proxy proxy host，proxy server
Quality of Service proxy server
Self-service service terminal
single-plane (through-plane service) service
proxy signature with proxy signer privacy protection
Break of Service， Out-of-Service
free medical service; free medicare; public health service
in service and out of service
overland common point service {= OCP service}
search and rescue service {= SAR service}
service oriented architecture service
Value Added Service (VAS)New Service