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---
Author: János Kövesdi
Version: 155 17-CNL 113 580, Rev. A
Date: 2013-09-05
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= BSSAPP (V7.3.0) Protocol Modules for TTCN-3 Toolset with TITAN, Function Specification
:author: János Kövesdi
:revnumber: 155 17-CNL 113 580, Rev. A
:revdate: 2013-09-05
:toc:
== How to Read This Document
This is the Function Specification for the set of BSSAPP protocol modules. BSSAPP protocol modules are developed for the TTCN-3 Toolset with TITAN.
== Scope
The purpose of this document is to specify the content of the BSSAPP protocol modules. Basic knowledge of TTCN-3 ‎<<_2, [2]>> and TITAN TTCN-3 Test Executor <<_3, ‎[3]>> is valuable when reading this document.
= 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 ‎<<_3, [3]>>.
The protocol modules are using Titans RAW encoding attributes <<_4, ‎[4]>> and hence they 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 BSSAPP protocol. The modules are based on 29.018 V7.3.0 (see ‎<<_1, [1]>>).
=== Unimplemented Messages, Information Elements and Constants
None.
[[protocol-modifications-deviations]]
=== Protocol Modifications/Deviations
None.
[[encoding-decoding-and-other-related-functions]]
== Encoding/Decoding and Other Related Functions
This product also contains encoding/decoding functions, which assure correct RAW encoding of messages when sent from Titan and correct RAW 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_BSSAPp`
|PDU_BSSAPp
|octetstring
|`dec_PDU_BSSAPp`
|octetstring
|PDU_BSSAPp
|===
= Terminology
No specific terminology is used.
= Abbreviations
BSSAPP:: Base Station System Application Part+ (BSSAP+)
TTCN-3:: Testing and Test Control Notation version 3
= References
[[_1]]
[1] 3GPP TS 29.018 V7.3.0 (2006-12) +
3rd Generation Partnership Project; Technical Specification Group Core Network; General Packet Radio Service (GPRS) Serving GPRS Support Node (SGSN) - Visitors Location Register (VLR) Gs interface layer 3 specification (Release 7)
[[_2]]
[2] ETSI ES 201 873-1 v.3.2.1 (2007-02) +
The Testing and Test Control Notation version 3. Part 1: Core Language
[[_3]]
[3] User Guide for the TITAN TTCN-3 Test Executor
[[_4]]
[4] Programmers Technical Reference for the TITAN TTCN-3 Test Executor