basic of – Gateway GPRS Support Node

basic of – Gateway GPRS Support Node:

Provides inter-working between PLMN and  external packet-switched networks.

Converts the GPRS packets from SGSN into the appropriate packet data protocol format (e.g., IP or X.25) and sends out on the corresponding packet data network. 

Participates into the session management.

Collects charging information for billing purpose.