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TS 11.23 (GERAN1)
GSM Signalling Aspects Base Station System equipment Specification

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(P) GSM Phase-2 v4.9.1    1998/10    318 p.

See also:  –

This TS contains the signalling aspects of the Base Station System for GSM. The set of signalling tests cover major areas of functionality on the air, Abis and A interfaces, but is not designed to be a complete set of all the possible scenarios.

The tests were designed from the set of core specifications that exist for the GSM network and any changes that occur these specifications will be reflected in the test set documented within.


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1   Scope   PDF-p. 13
2   Normative references
3   Abbreviations   PDF-p. 15
4   Guide to this ETS
5   Testing of Layer 2 (LAPDm) functions   PDF-p. 16
5.1   Scope
5.2   Introduction
5.3   Layer 2 test frames      Up
5.4   General requirements   PDF-p. 17
5.5   Establishment of the dedicated physical resource   PDF-p. 18
5.6   Release of the dedicated physical resource      Up
5.7   LAPDm idle state
5.8   Signalling connections (SAPI=0)   PDF-p. 23
5.8.1   Link establishment   PDF-p. 24
5.8.2   Normal information transfer   PDF-p. 27
5.8.3   Normal Layer 2 release by MS   PDF-p. 34
5.8.4   Normal Layer 2 release by BSS   PDF-p. 35
5.8.5   Abnormal release
5.8.6   Frame loss   PDF-p. 38
5.8.7   Reception of REJ frames   PDF-p. 40
5.8.8   Frame transmission with incorrect C/R values   PDF-p. 44
5.8.9   Link failure   PDF-p. 46
5.8.10   Errors in the Control Field   PDF-p. 47
5.8.11   Receipt of invalid frames   PDF-p. 52
5.9   Short Message Services (SMS) (SAPI=3)   PDF-p. 55      Up
5.10   Simultaneous transactions on both SAPIs   PDF-p. 70
5.11   Layer 3 functions   PDF-p. 78
5.12   Short Message Service Cell Broadcast (SMSCB)   PDF-p. 79
6   Internal ABIS interfacing
7   Interfacing with the mobile services switching centre   PDF-p. 91
8   Base station system network aspects   PDF-p. 92
8.1   Base station system network functions
8.1.1   General
8.1.2   Testing of the DTAP   PDF-p. 93
8.1.3   Testing of the BSSMAP and RR functions   System information   PDF-p. 96      Up   Service requests in SABM frames   PDF-p. 98   Random access by MS and immediate assignment   PDF-p. 100   Paging   PDF-p. 106      Up   Measurement reporting   Assignment   PDF-p. 109   External handover as seen from the old BSS   PDF-p. 122      Up   External handover as seen from the new BSS   PDF-p. 126   Internal handover      Up   Frequency redefinition   PDF-p. 150      Up   Transmission mode change   PDF-p. 151   Ciphering mode setting   PDF-p. 152   Additional assignment   PDF-p. 158   Partial release   Classmark   PDF-p. 159      Up   Channel release   PDF-p. 160   Radio link failure   PDF-p. 164   Blocking   Resource indication   PDF-p. 172      Up   Reset   PDF-p. 177   Handover candidate enquiry   PDF-p. 182      Up   Trace invocation   PDF-p. 186   Flow control   Data link control for SAPI not equal to 0      Up   Queuing indication   PDF-p. 191   Short Message Service Cell Broadcast (SMSCB)   PDF-p. 194      Up   Unequipped circuit   Confusion      Up
8.1.4   Multiband Management   PDF-p. 204

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