1、 International Telecommunication Union ITU-T M.727TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2011) SERIES M: TELECOMMUNICATION MANAGEMENT, INCLUDING TMN AND NETWORK MAINTENANCE International telephone circuits Planned outage notification point Recommendation ITU-T M.727 ITU-T M-SERIES RECOM
2、MENDATIONS TELECOMMUNICATION MANAGEMENT, INCLUDING TMN AND NETWORK MAINTENANCE Introduction and general principles of maintenance and maintenance organization M.10M.299 International transmission systems M.300M.559 International telephone circuits M.560M.759Common channel signalling systems M.760M.7
3、99 International telegraph systems and phototelegraph transmission M.800M.899 International leased group and supergroup links M.900M.999 International leased circuits M.1000M.1099 Mobile telecommunication systems and services M.1100M.1199 International public telephone network M.1200M.1299 Internati
4、onal data transmission systems M.1300M.1399 Designations and information exchange M.1400M.1999 International transport network M.2000M.2999 Telecommunications management network M.3000M.3599 Integrated services digital networks M.3600M.3999 Common channel signalling systems M.4000M.4999 For further
5、details, please refer to the list of ITU-T Recommendations. Rec. ITU-T M.727 (03/2011) i Recommendation ITU-T M.727 Planned outage notification point Summary Recommendation ITU-T M.727 defines the planned outage notification point and describes its responsibilities and functions. It focuses on the i
6、nteraction between a customer and a service provider. History Edition Recommendation Approval Study Group 1.0 ITU-T M.727 2011-03-01 2 Keywords Customer, network operator, one-stop-shopping, planned outage notification, service agreement, service provider, user. ii Rec. ITU-T M.727 (03/2011) FOREWOR
7、D The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying te
8、chnical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups whic
9、h, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and
10、IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to
11、ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words
12、does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concer
13、ning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by pat
14、ents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2011 All rights reserved. No part of this publ
15、ication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T M.727 (03/2011) iii Table of Contents Page 1 Scope 1 2 References. 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 2 4 Abbreviations 2 5 Conventions
16、2 6 General principles for the planned outage notification point . 2 7 Relation with other Recommendations . 3 8 Responsibilities and functions 3 iv Rec. ITU-T M.727 (03/2011) Introduction Traditionally, an end-to-end private international service has been jointly provided by bilateral network opera
17、tors who have individual bilateral service agreements with both end customers. An end-to-end domestic service has been solely provided by a single network operator under a single service agreement with the customer. Currently, these end-to-end services are in many cases provided by multiple network
18、operators. In this case, a single service provider normally has an end-to-end service agreement with the customer. This agreement is called one-stop-shopping. The service provider has contracts with all network operators involved. The customer normally requires the service provider to notify in adva
19、nce all planned outages in any network portion within the end-to-end connection. The function responsible for notifying the customer is called planned outage notification point (PONP). Recommendation ITU-T M.727 describes the process and the functions of the PONP. Related Recommendation ITU-T M.1541
20、 (planned outage notification to customer) describes the procedures for planned outage notification between the service provider and the customer for different network architectures and different types of service agreements. Rec. ITU-T M.727 (03/2011) 1 Recommendation ITU-T M.727 Planned outage noti
21、fication point 1 Scope Planned maintenance actions by a network operator may cause outage of services. Especially, maintenance of local access facilities will normally cause service outage because there is usually no backup available. From the view point of customer satisfaction, such outages caused
22、 by planned maintenance actions should be notified to the customer in advance. Under some service agreements such as one-stop-shopping, a service provider is required to notify the customer not only his actual planned outages but also other planned outages by the other contracted network operators s
23、uch as neighbour and distant network operators. The present Recommendation introduces the concept of planned outage notification point and describes its responsibilities and functions. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference i
24、n this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent
25、 edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T M.60 Recommendation
26、 ITU-T M.60 (1993), Maintenance terminology and definition. ITU-T M.1400 Recommendation ITU-T M.1400 (2006), Designations for interconnections among operators networks. ITU-T M.1541 Recommendation ITU-T M.1541 (2011), Planned outage notification to customer. ITU-T M.3050.2 Recommendation ITU-T M.305
27、0.2 (2007), Enhanced Telecom Operations Map (eTOM) Process decompositions and descriptions. ITU-T M.3342 Recommendation ITU-T M.3342 (2006), Guidelines for the definition of SLA representation templates. ITU-T M.3344 Recommendation ITU-T M.3344 (2011), Requirements and analysis for NGN appointment m
28、anagement across the business to business and customer to business interfaces. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 customer ITU-T M.60: An entity which receives services offered by a service provider based on a contractual r
29、elationship. It may include the role of a network user. 2 Rec. ITU-T M.727 (03/2011) 3.1.2 network operator ITU-T M.1400: An operator that manages a telecommunications network. A network operator may be a service provider and vice versa. A network operator may or may not provide particular telecommu
30、nications services. 3.1.3 service provider ITU-T M.1400: A general reference to an operator that provides telecommunication services to customers and other users either on a tariff or contract basis. A service provider may or may not operate a network. A service provider may or may not be a customer
31、 of another service provider. 3.1.4 user ITU-T M.60: A person or a machine delegated by a customer to use the services and/or facilities of a telecommunications network. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 one-stop-shopping: An arrangement
32、whereby a single service provider provides and/or coordinates with multiple network operators the provision of one or more telecommunication services to a customer. It is designed to provide the customer with a single point of contact for ordering, implementation, billing and maintenance of the part
33、ial services provided by each involved network operator. NOTE This definition is derived from the applicable definition in ITU-T M.60, by replacing the term “administration“ with “service provider“ or “network operator“. 3.2.2 planned outage notification point (PONP): A planned outage notification p
34、oint (PONP) is an element within the service providers organization, responsible for initiating and coordinating service notification activities to customers in case of planned outages on any network section within the scope of the service agreement between a customer and a service provider. 4 Abbre
35、viations This Recommendation uses the following abbreviations: eTOM enhanced Telecom Operations Map PONP Planned Outage Notification Point QoS Quality of Service SLA Service Level Agreement UNI User Network Interface 5 Conventions None. 6 General principles for the planned outage notification point
36、The PONP is in principle identified in the SLA between the service provider and the customer. The responsibilities and functions of the PONP are given in clause 8. In case of one-stop-shopping, the scope of the PONP generally includes an end-to-end (UNI-UNI) telecommunication service connection, eve
37、n though some network sections are provided by other network operators. Rec. ITU-T M.727 (03/2011) 3 7 Relation with other Recommendations The Recommendation on eTOM process decompositions and descriptions, ITU-T M.3050.2, addresses in clause 7.1.7 the subject of informing the customer “of any plann
38、ed maintenance or other scheduled events likely to impact delivery of the customers service“ as part of the “Manage QoS/SLA violation“ process. It should be noted, however, that it depends on the exact provisions of the SLA whether an outage due to planned maintenance indeed constitutes an SLA viola
39、tion. Also, e.g., when a certain number of outages is allowed, and a planned outage does not cause that number to be exceeded, it may still be required to inform the customer. The provisions of this Recommendation provide a detailed description of the steps involved in informing the customer, indepe
40、ndent of whether the outage will cause an SLA violation. ITU-T M.3342 provides guidelines for the definition of SLA representation templates. The PONP can be understood as a specific case of the “Points of Contact“ as described in clauses 6.3.2 and 7.2.1 of ITU-T M.3342. 8 Responsibilities and funct
41、ions The PONP is responsible for the following set of functions: 1) Receiving the maintenance plan, including possibly service affecting maintenance actions, from the maintenance department within its network operations organization or from the maintenance department of other contractually involved
42、network operators. 2) Identifying the degree of impact on services. 3) Listing up the customers to be affected. 4) Requesting and coordinating with the maintenance departments any required changes to the maintenance plan. 5) Deciding whether the outage caused by planned maintenance will be notified
43、to the customer. (Specific agreements in the SLA could exempt outages occurring during predefined timeslots, e.g., specific holidays or during customers maintenance activities, from the need to be notified to the customer.) 6) Notifying the planned outage to the customer. 7) Negotiating, if required
44、, with the customer a suitable timeslot for the outage. NOTE The negotiation can be conducted according to the provisions of ITU-T M.3344, “Requirements and analysis for NGN appointment management across the business to business and customer to business interfaces“. 8) Confirming the planned outage
45、with the customer. 9) Monitoring and, if required, coordinating the progress of the planned maintenance. 10) Confirming the return to normal service conditions after the planned maintenance has been finished. 11) Reporting the events to the customer. 12) Reporting the events to the service departmen
46、t, if required, and to other contractual network operators concerned. Printed in Switzerland Geneva, 2011 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General tariff principles Series E Overall network operation, telephone service, service operation and human f
47、actors Series F Non-telephone telecommunication services Series G Transmission systems and media, digital systems and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other mu
48、ltimedia signals Series K Protection against interference Series L Construction, installation and protection of cables and other elements of outside plant Series M Telecommunication management, including TMN and network maintenance Series N Maintenance: international sound programme and television t
49、ransmission circuits Series O Specifications of measuring equipment Series P Terminals and subjective and objective assessment methods Series Q Switching and signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protocol aspects and next-generation network
