| Connection Mgmt | Network Protocol | Connection Management includes Call Control (CC) and Session Management (SM) |  | |
| GGSN | Device Model | Gateway GPRS Support Node | | |
| GMM/MM | Network Protocol | GPRS Mobility Management and Mobility Management | | |
| GTP | Network Protocol | GPRS Tunneling Protocol | | |
| HLR | Device Model | Home Location Register | | |
| HSDPA | Physical Model | High Speed Downlink Packet Access | | |
| MAC | Layer 2 | UMTS Medium Access Control Layer | | |
| NBAP | Network Protocol | Node B Application Part | | |
| Node B | Device Model | UMTS Base Station, managed by a RNC | | |
| RANAP | Network Protocol | Radio Access Network Application Part | | |
| RLC | MAC Protocol | Radio Link Control Protocol | | |
