1、STD-ITU-T RECMN D-2LL-ENGL 1998 W I)Bb259L Obb2L revised in 1998) The ITU-T, considering a) that in Signalling System No. 7, the signalling need not follow the same path as the traffic, but may be routed via an STP/SPR provided by a third Administration; b) that in SS No. 7 user-to-user information
2、and Administration data is be passed over the signalling system in addition to call control data; 4 that use of STPs/SPR will increase network reliability and resilience, and enable the advantages offered by common channel signalling to be fully realized. Accounting should therefore be on as simple
3、and reasonable basis as possible, so as not to discourage STP/SPR working; d) that the capability exists for non-circuit-related information transfer which could have considerable impact on the signalling network in general, and the STP/SPR in particular, and therefore may justify a more precise met
4、hod of accounting; e that it will be necessary to measure the levels and types of traffic routed via an STP/SPR not only for international accounting purposes, but also for route dimensioning and STP/SPR capacity purposes. recommends the following accounting options there are several options for int
5、ernational accounting for the use of STPs/SPR in SS No. 7, as indicated below. 1 No accounting 1.1 Where signalling traffic volumes are low, and/or to minimize costs, STP/SPR providers may decide that no accounting will be necessary in a signalling relation. 1.2 Where facilities are made available b
6、y STP/SPR providers on a reciprocal basis (including temporary routing via STP/SPR facilities, for example in the case of network failures), STP/SPR providers may bilaterally agree to waive international accounting. 2 Flat rate remuneration With this approach, STP/SPR providers are remunerated for t
7、he facilities provided on a flat-rate basis. The level of remuneration will be determined by the STPSPR provider on the basis of an apportionment of the associated costs. Recommendation D.211 (12/98) 1 3 Traffic volume remuneration 3.1 With this approach, STPSPR providers are remunerated based on th
8、e volume of signalling traffic handled for others by their STPs/SPR. The levels of remuneration will be determined by the STPSPR provider on the basis of an apportionment of the associated costs. A recommended charging unit(s) is for further study (see Note). 3.2 - Additional options under the traff
9、ic volume remuneration may be, for example: a lower charge may be applied to signalling traffic handled during off-peak signalling traffic periods, with a higher charge applicable to signalling traffic handled during peak signalling traffic periods; and/or an STPSPR provider may decide to handle sig
10、nalling traffic up to an agreed volume at a specified charge rate, with a different charge rate applicable to signalling traffic above the agreed volume. NOTE - Signalling messages may vary in size up to a maximum of 272 octets. Accounting based on octets may be an alternative therefore to per messa
11、ge accounting, but due to the volume of signalling traffic, these may have to be measured in thousands or millions of octets. For further study. - 4 Unit for traffic volume accountirg 4.1 Signalling messages may vary between 6 octets and 272 octets. Recommendation Q.752 provides for recording both o
12、ctets and messages for accounting purposes. Counter values may be in the order of several millions per day. 4.2 a per message; or b) based on a multiple of octets, e.g. kilo octet. 4.3 When per message accounting is selected, the average number of octets per message, which can be derived from the tr
13、affic monitors, may be used as a basis for establishing the per message level of remuneration required. STP/SPR providers may decide to establish their remuneration requirement either: 2 Recommendation D.211 (12/98) STD-ITU-T RECPIN D*i!LL-ENGL 1778 4862593 Obb2L7b 131 aJ Series A Series B Series C
14、Series D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Y Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the ITU-T Means of expression: definitions, s
15、ymbols, classification General telecommunication statistics General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia sys
16、tems Integrated services digital network Transmission of television, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant TMN and network maintenance: international transmission systems, t
17、elephone circuits, telegraphy, facsimile and leased circuits Maintenance: international sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmiss
18、ion Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communications Global information infrastructure and Internet protocol aspects Languages and general software aspects for telecommunication systems Printed in Switzerland Geneva, 1999
