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+---
+Author: Endre Kulcsár
+Version: 155 17-CNL 113 761, Rev. A
+Date: 2012-12-12
+
+---
+= BSSMAP (11.2.0) Protocol Modules for TTCN-3 Toolset with TITAN, Function Specification
+:author: Endre Kulcsár
+:revnumber: 155 17-CNL 113 761, Rev. A
+:revdate: 2012-12-12
+:toc:
+
+
+== How to Read This Document
+
+This is the Function Specification for the set of BSSMAP (v11.2.0) protocol modules. BSSMAP protocol modules are developed for the TTCN-3 Toolset with TITAN.
+
+== Scope
+
+The purpose of this document is to specify the content of the BSSMAP (V11.2.0) protocol modules.
+
+= General
+
+Protocol modules implement the message structures of the related protocol in a formalized way, using the standard specification language TTCN-3. This allows defining of test data (templates) in the TTCN-3 language <<_2, [2]>> and correctly encoding/decoding messages when executing test suites using the TITAN TTCN-3 test environment.
+
+Protocol modules are using TITAN’s RAW encoding attributes <<_3, [3]>> and hence are usable with the TITAN test toolset only.
+
+= Functional Specification
+
+== Protocol Version Implemented
+
+This set of protocol modules implements protocol messages and constants of the BSSMAP protocol, version 11.2.0 (see <<_1, [1]>>).
+
+[[modifications-deviations-related-to-the-protocol-specification]]
+== Modifications/Deviations Related to the Protocol Specification
+
+=== Implemented Messages
+
+All BSSMAP messages listed in section 3.2 of <<_1, [1]>> are implemented, except for the ones listed in <<protocol-modifications-deviations, Protocol Modifications/Deviations>>
+
+[[protocol-modifications-deviations]]
+=== Protocol Modifications/Deviations
+
+The following messages are not implemented:
+
+* EMERGENCY RESET INDICATION
+
+* EMERGENCY RESET COMMAND
+
+Message type definitions for these messages are missing from <<_1, [1]>>.
+
+[[encoding-decoding-and-other-related-functions]]
+== Encoding/Decoding and Other Related Functions
+
+This product also contains encoding/decoding functions that assure correct encoding of messages when sent from TITAN and correct decoding of messages when received by TITAN. Implemented encoding/decoding functions:
+
+[cols=3*,options=header]
+|===
+
+|Name |Type of formal parameters |Type of return value
+|`enc_PDU_BSSAP` |PDU_BSSAP |octetstring
+|`dec_PDU_BSSAP` |octetstring |PDU_BSSAP
+|`enc_PDU_BSSAP_fast` |PDU_BSSAP |octetstring
+|`dec_PDU_BSSAP_backtrack` |octetstring |PDU_BSSAP
+|===
+
+== Limitations
+
+Debug log generation is not supported when this revision of this product is used with TITAN version R7A (1.7pl0), because the encoder/decoder functions, automatically generated by TITAN version R7A (1.7pl0) do not contain logging functions. Newer versions of TITAN supports the debug logging within the automatically generated encoder/decoder functions that can be activated by allowing the `DEBUG_ENCDEC` (see Programmer's Technical Reference for TITAN TTCN-3 Test Executor, clause 6.2.3.2) in TITAN runtime configuration files.
+
+= Terminology
+
+TITAN TTCN-3 Test Executor (see <<_3, [3]>>).
+
+= Abbreviations
+
+3GPP:: 3rd Generation Partnership Project
+
+BSSAP:: Base Station Subsystem Application Part
+
+BSSMAP:: Base Station Subsystem Management Application Part
+
+TTCN-3:: Testing and Test Control Notation version 3
+
+= References
+
+[[_1]]
+[1] 3GPP TS 48.008 V11.2.0 (2012-05) +
+3rd Generation Partnership Project; +
+Technical Specification Group GSM/EDGE Radio Access Network; +
+Mobile Switching Centre - Base Station System(MSC-BSS) interface; +
+Layer 3 specification(Release 11)
+
+[[_2]]
+[2] ETSI ES 201 873-1 v4.4.1 (2012-04) +
+The Testing and Test Control Notation version 3; Part 1: Core Language
+
+[[_3]]
+[3] TITAN User Guide
+