1、ITU-T RECMN*Q=513 93 II 4862593 0584587 584 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU DIGITAL EXCHANGES Q.513 (03/93) DIGITAL EXCHANGE INTERFACES FOR OPERATIONS, ADMINISTRATION AND MAINTENANCE ITU-T Recommendation Q.513 (Previously “CCITT Recommendat
2、ion“) ITU-T RECflNtQ.5l13 93 4862591 058Yb30 585 FOREWORD The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecom- munication Union. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them
3、with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, established the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. ITU-T Recommend
4、ation 4.513 was revised by the IT-T Study Group XI (1988-1993) and was approved by the WTSC (Helsinki, March 1-12, 1993). NOTES 1 As a consequence of a reform process within the International Telecommunication Union (ITLJ), the CCITT ceased to exist as of 28 February 1993. In its place, the ITU Tele
5、communication Standardization Sector (ITU-T) was created as of 1 March 1993, Similarly, in this reform process, the CCIR and the IFRB have been replaced by the Radiocommunication Sector. In order not to delay publication of this Recommendation, no change has been made in the text to references conta
6、ining the acronyms “CCIIT, CCIR or IFRB” or their associated entities such as Plenary Assembly, Secretariat, etc. Future editions of this Recommendation will contain the proper terminology related to the new ITU structure. 2 telecommunication administration and a recognized operating agency. In this
7、 Recommendation, the expression “Administration” is used for conciseness to indicate both a O ITU 1994 Ail rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in wri
8、ting from the IT. CONTENTS Page 1 General . 1 2 3 General characteristics of the interfaces to OA modified at Helsinki, 1993) 1 General This Recommendation applies to digitai local, combined, transit and international exchanges for telephony in Integrated Digital Networks (IDN) and mixed (analoguddi
9、gital) networks, and also to local, combined, transit and international exchanges in an Integrated Services Digitai Network (ISDN). The field of application of this Recommendation is more fully defined in Recommendation 4.500. This Recommendation is not intended to define any systems or equipment in
10、 or connected to, a digital exchange via these interfaces. Therefore only the interfaces characteristics are described. In the text of this Recommendation, references are made to operation, administration and maintenance (OA b) human-machine terminals which provide access to exchanges or operations
11、systems. Such terminals can vary in capability. Some may only perform simple functions such as displaying messages and providing human interface capability. More sophisticated terminals may also perform the analysis and filtering of information, display of exchange status information, provision of s
12、oftware support functions. etc. 2 General characteristics of the interfaces to OA b) interfaces to OA bulk data transfers: large data volumes to be transported, e.g. billing data. The characterhation of these information types is for further study. 2 Recommendation Q.513 (03193) ITU-T RECMN*d-533 93
13、 = 4862593 0584634 I120 Telecommunications management network (TMN) inerfaces ! Tl157#WUH Specification d this interface is Inder study eed for this interface is for further study II II II 4 t - - WS Workstation OS 0peraonss)stem DCN ata cornmunicatian network NOTE - An exchange is an example of a n
14、etwork element (NE) as defined in Recommendation M.30. FIGURE UQ.513 Interfaces associated with operations, adninistration and maintenance in a digitai, transit, local or combined exchange The protocols used across the Q3 interface will be based on the OS1 model and will use OS1 protocols specified
15、by CCiT where possible. To allow for alternative DCNs, alternative lower layer protocol sets may be used, depending on the specific situation. Several protocol sets for layers 1, 2 and 3 have been used for similar data communications networks. Examples include: a) X.25; b) c) Q.92UQ.93 1. Signalling
16、 System No. 7 MTP/SCCP; Their use in TMN applications is for further study. It is recommended that each set of TMN application functions with similar protocol needs be supported with unique protocol selections for layers 4 through 7 as defined by the OS1 Reference Model (Recommendation X.200). The n
17、ulling of service options of individual layers above layer 3 and even entire layers above layer 3 may be necessary where justifiable. 4.1.2 Q2 interlace Interface Q2 may be used to connect exchanges to Mediation Devices (MDs) or to Network Elements (NEs) which contain a mediation function. The need
18、for the 42 interface on an exchange is for further study. Recommendation Q.513 (03/93) 3 4.1.3 QI interface Interface QI may be used to connect exchanges to NEs which support only the Network Element Function and no mediation function. The need for the QI interface on an exchange is for further stud
19、y. 4.1.4 F interface Interface F connects exchanges to workstations. The definition of functions and protocols is for further study. 4.1.5 Ginterface Interface G is the human-machine interface for OA&M functions, providing output displays and text (e.g. CRT, printer, light panel) and input capabilit
20、ies (e.g. keyboard). This interface is specified in the Z.300-Series Recommendations which may be enhanced in the future. 4.2 Other OA&M interfaces These interfaces are intended to represent existing OA&M interfaces during the period of transition to “MN. They are not subject to CCITT Recommendation
21、s. 4.2.1 QO interface Interface QO connects exchanges to OSs, MDs and NEs using protocols and functions other than those defined in TMN Recommendations. 4.2.2 FO interface Interface FO connects exchanges to workstations, using function and protocols not specified in TMN Recommendations. 4.2.3 GO int
22、erface Interface Go is a human-machine interface not subject to CCIT Recommendations. 4.3 ISDN access interfaces The exchange requirements for interworking between the exchange ISDN access sub-system including the V interfaces and the exchange TMN sub-system are for futher study. 4.4 The exchange requirements for interworking between the exchange Signalling System No. 7 sub-systems and the exchange TMN sub-system are for further study. Signalling System No. 7 network interface 4 Recommendation Q.513 (03/93)
