ETSI EN 300 175-5 V2.8.1 (2019-12) EUROPEAN STANDARD Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer 2 ETSI EN 300 175-5 V2.8.1 (2019-12) Reference REN/DECT-00325 Keywords DECT, IMT-2000, mobility, radio, TDD, TDMA ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. 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ETSI 3 ETSI EN 300 175-5 V2.8.1 (2019-12) Contents Intellectual Property Rights .............................................................................................................................. 16 Foreword ........................................................................................................................................................... 16 Modal verbs terminology .................................................................................................................................. 16 1 Scope ...................................................................................................................................................... 17 2 References .............................................................................................................................................. 18 2.1 Normative references ....................................................................................................................................... 18 2.2 Informative references ...................................................................................................................................... 22 3 Definition of terms, symbols and abbreviations ..................................................................................... 23 3.1 Terms ................................................................................................................................................................ 23 3.2 Symbols ............................................................................................................................................................ 23 3.3 Abbreviations ................................................................................................................................................... 24 4 Overview of the NWK layer .................................................................................................................. 28 5 Overview of procedures ......................................................................................................................... 29 5.1 General ............................................................................................................................................................. 29 5.2 Overview of Call Control (CC) ........................................................................................................................ 30 5.2.1 General ........................................................................................................................................................ 30 5.2.2 Call establishment ....................................................................................................................................... 30 5.2.2.1 Call setup .............................................................................................................................................. 30 5.2.2.2 Service negotiation ................................................................................................................................ 31 5.2.3 Call connect ................................................................................................................................................ 31 5.2.4 Call information .......................................................................................................................................... 31 5.2.5 Service change ............................................................................................................................................ 31 5.2.6 Call release.................................................................................................................................................. 32 5.3 Overview of Supplementary Services (SS) ...................................................................................................... 32 5.3.1 General ........................................................................................................................................................ 32 5.3.2 Keypad protocol .......................................................................................................................................... 33 5.3.3 Feature key management protocol .............................................................................................................. 33 5.3.4 Functional protocol ..................................................................................................................................... 33 5.4 Overview of Connection Oriented Message Service (COMS) ......................................................................... 33 5.4.1 General ........................................................................................................................................................ 33 5.4.2 COMS establishment .................................................................................................................................. 34 5.4.3 Service negotiation ..................................................................................................................................... 34 5.4.4 COMS connect ............................................................................................................................................ 34 5.4.5 COMS data transfer .................................................................................................................................... 34 5.4.6 COMS suspend and resume ........................................................................................................................ 34 5.4.7 COMS release ............................................................................................................................................. 35 5.5 Overview of ConnectionLess Message Service (CLMS) ................................................................................. 35 5.5.0 General ........................................................................................................................................................ 35 5.5.1 Fixed length message service...................................................................................................................... 35 5.5.2 Variable length message service ................................................................................................................. 35 5.6 Overview of Mobility Management (MM) ...................................................................................................... 35 5.6.1 General ........................................................................................................................................................ 35 5.6.2 Identity procedures ..................................................................................................................................... 36 5.6.3 Authentication procedures .......................................................................................................................... 36 5.6.4 Location procedures .................................................................................................................................... 37 5.6.5 Access rights