| --- | 
 | Author: László Farkas | 
 | Version: 155 17-CNL 113 478, Rev. A | 
 | Date: 2016-11-17 | 
 |  | 
 | --- | 
 | = SUA Protocol Modules for TTCN-3 Toolset with TITAN, Function Specification | 
 | :author: László Farkas | 
 | :revnumber: 155 17-CNL 113 478, Rev. A | 
 | :revdate: 2016-11-17 | 
 | :toc: | 
 |  | 
 | *Copyright* | 
 |  | 
 | Copyright (c) 2000-2019 Ericsson Telecom AB. + | 
 | All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 that accompanies this distribution, and is available at + | 
 | http://www.eclipse.org/legal/epl-v10.html. | 
 |  | 
 | == How to Read This Document | 
 |  | 
 | This is the Function Specification for the set of SUA protocol modules. SUA protocol modules are developed for the TTCN-3 Toolset with TITAN. | 
 |  | 
 | == Scope | 
 |  | 
 | The purpose of this document is to specify the content of the SUA 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 definition of test data (templates) in TTCN-3 language <<_2, [2]>> and correct encoding/decoding of 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 SUA protocol (see <<_1, [1]>>). | 
 |  | 
 | [[modifications-deviations-related-to-the-protocol-specification]] | 
 | == Modifications/Deviations Related to the Protocol Specification | 
 |  | 
 | === Implemented Messages | 
 |  | 
 | All SUA message types of message classes 0, 2, 3, 4, 7, 8 and 9 as listed in chapter 3.1.2 of <<_1, [1]>> will be implemented. | 
 |  | 
 | [[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 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 | 
 |  | 
 | |`f_enc_PDU_SUA` | 
 | |PDU_SUA | 
 | |octetstring | 
 |  | 
 | |`f_dec_PDU_SUA` | 
 | |octetstring | 
 | |PDU_SUA | 
 | |=== | 
 |  | 
 | = Terminology | 
 |  | 
 | TITAN TTCN-3 Test Executor (see <<_3, [3]>>). | 
 |  | 
 | = Abbreviations | 
 |  | 
 | PDU:: Protocol Data Unit | 
 |  | 
 | SUA:: Signalling Connection Control Part User Adaptation Layer | 
 |  | 
 | TTCN-3:: Testing and Test Control Notation version 3 | 
 |  | 
 | = References | 
 |  | 
 | [[_1]] | 
 | [1] https://tools.ietf.org/html/rfc3868 + | 
 | Signaling Connection Control Part User Adaptation Layer (SUA) | 
 |  | 
 | [[_2]] | 
 | [2] ETSI ES 201 873-1 v.3.1.1 (06/2005) + | 
 | The Testing and Test Control Notation version 3. Part 1: Core Language | 
 |  | 
 | [[_3]] | 
 | [3] User Documentation for the TITAN TTCN-3 Test Executor |