1、ITU-T RECNN*I.ZSb. 2A 93 111 4862591 05838LL STB m INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU INTEGRATED SERVICES DIGITAL NETWORK (ISDN) SERVICE CAPABILITIES SUPPLEMENTARY SERVICES IN ISDN 1.256.2a (03/93) ADVICE OF CHARGE: CHARGING INFORMATION AT CAL
2、L SET-UP TIME (AOC-S) ITU-T Recommendation 1.256.2a (Previously “CCITT Recommendation”) ITU-T RECMN*I.25b9 2A 93 48b259L 0583812 434 m FOREWORD The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecom- munication Union. The ITU-T is responsible for s
3、tudying technical, operating and tariff questions and issuing Recommendations on them 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
4、 Groups which, in their turn, produce Recommendations on these topics. ITU-T Recommendation I.2562.a was prepared by the ITU-T Study Group I (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
5、Union (ITU), the CCITT ceased to exist as of 28 February 1993. In its place, the ITU Telecommunication 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 Similarly, in this reform process, the CCIR and the IFRB have been replaced by the Radiocommunication Sector.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 pu
6、blication of this Recommendation, no change has been made in the text to references containing the acronyms “CCITT, 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
7、 structure. 2 telecommunication administration and a recognized operating agency. In this Recommendation, the expression “Administration” is used for conciseness to indicate both a O ITU 1994 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means,
8、electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. ITU-T RECMN*I.256. 2A 93 4Bb257L 05B3BL3 370 E CONTENTS Definition . Description . 2.1 Structure and contents of charging information . 2.2 Application of charging information . 2.3 Specific t
9、erminology . 2.4 Qualifications on applicability to telecommunication services Procedures 3.1 Provision/withdrawal 3.2 Normal procedures 3.3 Exceptional procedures . 3.4 Alternative procedures Network capabilities for charging . Interworking requirements . Interaction with other supplementary servic
10、es . 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.10 6.1 1 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 Call Waiting Call Transfer . Connected Line Identification Presentation Connected Line Identification Restriction Calling Line Identification Presentation . Calling Line Identification Restrict
11、ion . Closed User Group . Conference Calling . Direct Dialling-In Call Diversion . Line Hunting . Three-Party . User-to-User Signalling Multiple Subscriber Number Call Hold . Advice of Charge . Multi-Level Precedence and Preemption Priority Malicious Call Identification Outgoing Call Barring Reverse
12、 Charging . Sub-addressing 7 Dynamic description Page 1 1 1 3 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 6 6 6 7 7 7 7 7 7 8 8 8 8 8 8 8 Recommendation 1.256.2a (03/93) i ITU-T RECMN*I.25b. 2A 93 W 4862591 0583814 207 9 Recommendation 1.256.2a ADVICE OF CHARGE: CHARGING INFORMATION AT CALL SET-UP TIME (AOC-S
13、) Helsinki, 1993) 1 Definition For the purposes of this Recommendation, the following definition applies. The Advice of Charge: charging information at call Set-up time (AOC-S) supplementary service: Enables a user to receive information about the charging rates at call set-up time and also to recei
14、ve further information during the call if there is a change of charging rates. 2 Description The AOC-S supplementary service shall apply to the basic access and the primary rate access. The AOC-S supplementary service provides the served user with information about the charging rates at call establi
15、shment. In addition, the served user shall be informed if a change in charging rates takes place during the call. The information can be sent for all calls, or on a per call basis. The charge information given shall relate to the charges incurred on the network to which the served user is attached.
16、2.1 Structure and contents of charging information 1) Type of charging information - charging rate information. 2) Charged item The following charged items can be included. A charged item shall only be included if that item contains information concerning the charging applied to the call. NOTE 1 -Ne
17、twork providers will only use those charged items which are appropriate to that service providers charging mechanism. Thus, in some networks, users may/may not receive some of these items or combinations of items. Different networks could give information about the same call in different ways. - Bas
18、ic communication This charged item indicates the rate to be applied to the basic communication. If the rate changes, the served user shall be informed. - Call attempt This charged item indicates the cost applied for successful call attempt before called user accepts the call. - Call Set-up This char
19、ged item indicates the cost applied for the connection to the called user after call acceptance. - Special charging arrangement This charged item indicates that a special arrangement exists for calculating the cost of the call. operator and the user to which it is sent. NOTE 2 - The use of this char
20、ged item is outside the scope of the standard. It is a matter for the network Recommendation 1.256.2a (03/93) 1 ITU-T RECMN*I-256. 2A 93 4862591 0583815 143 - User-to-user information transfer This charged item indicates the rate to be applied to the transfer of user-to-user information. If the rate
21、 changes, the served user shall be informed. Special service or operation of supplementary services This charged item indicates the rate to be applied for a special service or for the operation of requested supplementary services. - 3) Charging rate The following charging rates can be associated wit
22、h the above charged items. Further information is given in 2.2. a) Duration rate The duration rate gives the currency value for a particular time unit, together with the length of the time unit. - Price per time unit and time unit Sub-units shall be: * currency identifier; * currency amount integer
23、value and a multiplier (see Note 6); * length of time unit integer value and a scale (see Note 4); * type of charging (unit charging or continuous charging); * optional: granularity integer value and a scale (see Note 4). This specifies the time unit applied for calculation of charges by the network
24、. NOTE 3 -The parameter described to express the duration rate provides a solution both for continuous charging as well as for charging with charging units. It is up to the network operator to specify the value of the parameter in a manner that it will fit with the continuous charging method or with
25、 the charging unit method. b) Specific rate - Free of charge This specific rate indicates that there is no charge to the served user for the associated charged item. Flat rate (a fixed currency value per event) This specific rate indicates a fixed currency value per event. Sub-units shall be: * curr
26、ency identifier; * currency amount integer value and a multiplier (see Note 6); - - Special charging code N This specific rate indicates a code which can identify a charging algorithm.The sub-unit shall be: * N (integer value from 1 to 10) - Not available This specific rate indicates that the chargi
27、ng rate is not available. The network is not required to give a reason. c) Volume rate The volume rate gives the currency value for a particular volume unit, together with the type of volume unit. - Price per volume unit and volume unit Sub-units shall be: * currency identifier; * currency amount in
28、teger value and a multiplier (see Note 6); 2 Recommendation 1.256.2a (03/93) ITU-T RECMN*I-25b- 2A 93 = 48b2593 0583836 OBT W * type of volume unit (see Note 5); * optional: type of charging (unit charging or currency charging). NOTE 4 - The scale of time units shall have one of the following values
29、: 0.01 s, 0.1 s, 1 s, 10 s, 1 min, 1 hour or 24 hours. NOTE 5 - Type of volume unit shall have one of the following values: octet, segment or message to which UUI has been attached. NOTE 6 - The multiplier shall have one of the following values: 0.001, 0.01, 0.1, 1, 10, 100 or 1000. 2.2 Application
30、of charging information Charging infomation shall be given either in currency units or as special charging arrangement. 2.2.1 “Basic communication”, if included, shall be associated with a charging rate having one of the following values: Charging information in currency units - - - free of charge;
31、- special charging code; - not available. price per time unit and time unit; flat rate (a fixed currency value per event); “Call attempt” and “call Set-up” shall only be included in the initial charging information sent to the served user. If these charged items are included, they shall be associate
32、d with a charging rate having one of the following values: - - free of charge; - special charging code; - not available. flat rate (a fixed currency value per event); “Special service or operation of supplementary services” shall only be included if the served user has requested a special service or
33、 a supplementary service. If this charged item is included, it shall be associated with a charging rate having one of the following values: - - - free of charge; - special charging code; - not available. price per time unit and time unit; flat rate (a fixed currency value per event); “User-to-user i
34、nformation transfer” shall only be included if the served user has requested the User-to-user signalling supplementary service. If this charged item is included, it shall be associated with a charging rate having one of the following values: - - free of charge; - special charging code; - not availab
35、le. price per volume unit and volume unit; If a charged item is not included, the default value shall be interpreted as “free of charge”. 2.2.2 The associated charging rate for “special charging arrangement” shall have the value “special charging code N. When the charged item “special charging arran
36、gement” is included, none of the other charged items shall be included. Charging information as special charging arrangement Recommendation 1.256.2a (03/93) ITU-T RECMN*I=25b. 2A 93 m 4862593 O583837 T3b m Subscription option Activation 2.3 Specific terminology For the purposes of this Recommendatio
37、n, the following definition applies. served user: The user of a particular ISDN number who is requesting that charging information shall be provided. AOC-S: Advice of Charge: charging information at call Set-up time. Value For all calls automatically On a per call basis 2.4 Qualifications on applica
38、bility to telecommunication services This supplementary service is applicable to all circuit switched telecommunication services. 3 Procedures 3.1 Provisiodwithdrawal The AOC-S supplementary service shall either be provided on a subscription basis or be generally available. The AOC-S supplementary s
39、ervice can be offered with one subscription option. Only one value can be selected. Withdrawal shall be at subscriber request or for administrative reasons. 3.2 Normal procedures 3.2.1 Activatioddeactivatiodregistration Activation of the AOC-S supplementary service shall either occur for all calls a
40、t provision, or it shall be possible to activate the supplementary service on a per call basis. The activation on a per call basis shall occur at call request. 3.2.2 Invocation and operation The charging information shall be provided by the network during call establishment or at the latest when the
41、 calling user is informed that the called user has accepted the call. Where there is a change in the charging rate during the call, the network shall send information about the new charging rate to be applied for the call. If the call is free of charge, or becomes free of charge during the active ph
42、ase (e.g. in case of reverse charging) the free-of-charge indication shall be given. 3.3 Exceptional procedures 3.3.1 Activatioddeactivatiodregistration Not applicable. 4 Recommendation I.256.2a (03/93) ITU-T RECNN*I-256. 2A 93 m 486259L 0583818 952 m 3.3.2 Invocation and operation If the charging i
43、nformation related to a call is not available, this shall be indicated to the served user using the specific rate “not available”. 3.4 Alternative procedures None identified. 4 Network capabilities for charging This Recommendation does not cover charging principles. Future Recommendations in the D-S
44、eries are expected to contain that information. It shall be possible to charge the subscriber accurately for the service. 5 Interworking requirements The AOC-S supplementary service shall be supported across the internetwork interface between ISDNs (Le. public or private). 6 Interaction with other s
45、upplementary services 6.1 Call Waiting No impact, i.e. neither supplementary service affects the operation of the other supplementary service. 6.2 Call Transfer No impact, i.e. neither supplementary service affects the operation of the other supplementary service. 6.3 Connected Line Identification P
46、resentation No impact, i.e. neither supplementary service affects the operation of the other supplementary service. 6.4 Connected Line Identification Restriction No impact, i.e. neither supplementary service affects the operation of the other supplementary service. 6.5 Calling Line Identification Pr
47、esentation No impact, i.e. neither supplementary service affects the operation of the other supplementary service. 6.6 Calling Line Identification Restriction No impact, i.e. neither supplementary service affects the operation of the other supplementary service. 6.7 Closed User Group No impact, i.e.
48、 neither supplementary service affects the operation of the other supplementary service. Recommendation 1.256.2a (03/93) 5 6.8 Conference Calling a) Conference controller 1) Invocation of the conference, add-on supplementary service from the idle state The conference controller can activate the AOC-
49、S supplementary service at the same time the conference, add-on supplementary service is invoked. Updated charging rate information for the whole conference shall be given to the conference controller if the charging rate for the conference is changed (only a single charge advice indicating the charging rate for the whole conference shall be given). Invocation of the conference, add-on supplementary service from an active call - 2) If the AOC-S supplementary service has been activated for the initial call, then it shall automatically be activated also for the conference. If the AO
