1. What is SMPP protocol? Why and when is it used? What is the primary difference between SMPP-based technology and GSM Modem technology?
2. Explain each of the following in the context of GPRS network.
(a) QoS parameters
(b) SGSN
(c) GGSN
(d) Channel Coding
(e) GPRS Data Link Layer
(f) GPRS Physical Layer