protocol used by the GPRS backbone network for packet switching. GTP is a protocol defined on both the Gn and Gp interfaces between GSNs in a GPRS network.

A group of IP-based protocols used to carry general packet radio service (GPRS) traffic within networks.  GTP traffic can consist of signalling traffic (GTP-C), user data traffic (GTP-U), and GTP prime (GTP’) data used for carrying the charging data.