The purpose of a TRC is to multiplex network traffic channels from multiple
BSCs onto one 64 Kbits/s PCM channel which reduces network transmission costs.
FUNCTION OF MSC:-
1. Switching and call
routing
2. Charging
3. Service
provisioning
4. Communication with
HLR
5. Communication with
the VLR
6. Communication with
other MSC’s
7. Control of
connected BSC’s
8. Direct access to
Internet services