5 V13.5.0 (2016 16-08) TECHNICAL SPECIFICATION ION Digital cellular telecomm mmunications system (Phase e 2+) (GSM); Universal Mobile Tel elecommunications System ( (UMTS); LTE; Inter-IMS Net tw wo ork to Network Interface (NN NNI) (3GPP TS 29.1 .165 version 13.5.0 Release 13 13) European Telecommunications Standards Institute Licensee=Chongqing Institute of quality and Standardizationb 5990390 Provided by IHS under license with ETSI Not for Resale, 標(biāo)準(zhǔn)截圖