How does HSCSD differs from the GSM to obtain higher speed data rate?

1.	How does HSCSD differs from the GSM to obtain higher speed data rate?
A.	By allowing single user to use one specific time slot
B.	By allowing single user to use consecutive user time slots
C.	By using 8-PSK modulation technique
D.	By allowing multiple users to use individual time slot
Answer» C. By using 8-PSK modulation technique

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