The GXPUM processes the primary services of the BSC.
The GXPUM performs the following functions:
- Provides paging control
- Provides System Information management
- Provides channel assignment
- Provides BTS public service management
- Provides voice call control
- Provides packet service control
- Provides handover control
- Provides power control
- Interfaces with the Cell Broadcast Center (CBC) on behalf of the BSC
- Stores cell broadcast messages
- Schedules cell broadcast messages, which are transmitted on the Cell Broadcast Channels (CBCHs)
- Processes signals according to the LAPD protocol
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