22279-710 CSI stage 1

22340-620 IMS Messaging Stage 1

21905 a30 Abbreviation

22081-700 Line Identification SS

E-UTRAN S1 Data Transport

48001 a01 BSS MSC General

21801-810 Drafting Rules

48058-A00 BSC-BTS Layer 3

43318-830 GAN