Refer to the passage below and then answer the question afterwards in the same language as the passage: Passage: GTP-U is also used to transport user data from the RNC to the SGSN in UMTS networks. Zvisinei, munyaya iyi signaling inoitwa uchishandisa RANAP panzvimbo peGTP-C. Mubvunzo: Chii chinoshandiswa kuendesa ruzivo pakati peRNC neSGSN?
GTP-U