Glossary

• 3GPP - 3rd Generation Partnership Program
• 5G-NR - 5G New Radio
• AF - Application Functions
• AMF - Access and Mobility Management Function
• AUSF - Authentication Server Function
• CSCF - Call Session Control Functions
• HSS - Home Subscriber Server
• I-CSCF - Interrogating Call Session Control Functions
• IMS - IP Multimedia Subsystem
• KYC - Know Your Customer
• NaaS - Network-as-a-Service
• NEF - Network Exposure Function
• NF - Network Functions
• NRF - Network Repository Function
• NSSF - Network Slice Selection Function
• ODA - Open Digital Architecture
• OSS - Operation Support System
• OTP - One Time Password
• PCF - Policy Control Function
• P-CSCF - Proxy Call Session Control Functions
• QoD - Quality on Demand
• QoS - Quality of Service
• RAN - Radio Access Network
• S-CSCF - Serving Call Session Control Functions
• SMF - Session Management Function
• SMSC - SMS Center
• SMSF - SMS Function
• SMS - Short Message Service
• UDM - Unified Data Management
• UPF - User Plane Function