Home > Application Areas > GPRS Technology > Gateway GPRS Support Node

The GGSN is connected to the SGSN via the Gn Interface using the GPRS Tunneling Protocol (GTP). Within the GGSN, GTP interfaces to the Adax Frame Relay software. Using the Adax High Density Controller (HDC) up to 128 channels of Frame Relay is supported over 4 or 8 T1/E1 connections. The HDC has two 10/100 BaseT Ethernet ports for connection to IP networks. With multiple protocol capabilities the HDC can also run SS7 MTP2 for the MAP stack on the Gc interface, the connection between the GGSN and the Home Location Register (HLR). The Adax MTP2 integrates to third party MTP3 and higher layers for a complete MAP stack solution.