1、Technical Report No. 64November 2000Operation of the BearerIndependent Call ControlProtocol with AAL Type 2Signaling Protocol (CS1)Prepared by T1S1.7Working Group onServices, Architecture, and ControlProblem Solvers to the Telecommunications IndustryCopyright 2000 by Alliance for Telecommunications
2、IndustrySolutionsAll rights reserved.Committee T1 is sponsored by the Alliance for TelecommunicationsIndustry Solutions (ATIS) and accredited by the American NationalStandards Institute (ANSI)No part of this publication may be reproduced in any form,in an electronic retrieval system or otherwise, wi
3、thout theprior written permission of the publisher.A Technical Report onOperation of the Bearer Independent Call Control Protocolwith AAL Type 2 Signaling Protocol (CS1)Document T1S1.7/2000-28R2Prepared byT1S1.7 Working Group onServices, Architecture, and ControliTable of ContentsSummary 11. Scope.1
4、2. References.23. Definitions 24. Abbreviations .35. Information Exchanged between BICC and AAL type 2 Signaling Entities35.1 Channel Attributes .35.2 Addressing.85.3 Binding Information85.4 Cause 8iiTable of FiguresFIGURE 1 Scope of this Report 1iiiTable of TablesTABLE 1 Mapping of Channel Attribut
5、es4TABLE 2 Mapping of Codec Type to Link Characteristics4TABLE 3 Mapping of Codec Type to Service Specific Information 6TABLE 4 Mapping of User Service Information to Link Characteristics .6TABLE 5 Mapping of User Service Information to Service Specific Information7TABLE 6 Mapping of Addressing .8TA
6、BLE 7 Mapping of Binding Information 8TABLE 8 Mapping of Cause (AAL type 2 Signaling Entity to BCF/CSF Logical Interface).9TABLE 9 Mapping of AAL type 2 Signaling Entity Cause Values to BICC Cause Categories9TABLE 10 Mapping of Cause (BCF/CSF Logical Interface to AAL type 2 Signaling Entity).10ivFor
7、ewordThis Technical Report (TR) describes the general aspects of the operation of the Bearer Independent CallControl (BICC) protocol with AAL type 2 signaling protocol, Capability Set 1 (CS 1), used to control AALtype 2 bearer connections.Footnotes and informative annexes are not officially part of
8、this TR.Future control of this TR will reside with Alliance for Telecommunications Industry Solutions. Suggestionsfor improvement of this specification will be welcome. These should be sent to the Alliance forTelecommunications Industry Solutions, T1 Secretariat, 1200 G Street, NW, Suite 500, Washin
9、gton DC20005.This TR was processed and approved for submittal to ATIS by the Accredited Standards Committee onTelecommunications, T1. Committee approval of this specification does not necessarily imply that allCommittee members voted for its approval.Working Group T1S1.7 developed this TR. Over the
10、course of its development the following individualsparticipated in the Working Groups discussions and made significant contributions to the report:Greg Ratta, T1S1.7 Working Group ChairLewis Robart, T1S1.7 Working Group Vice ChairViqar Shaikh, EditorStuart GoldmanKevin HagerMike PierceJaney CheuKoan
11、 S. ChongMartin DollyTung-Hai HsiaoDonna ImrichDoris LebovitsHans OudmaerA. J. Moore, Jr.Stewart PatchDan GreeneChip SharpDick BobilinDon ChoiKeith BronleyLinda TroyBruce NorthcoteM. I. McLoughlinMichael CollisonChris VitalosMark HosfordDawn BenedettoRolfe BuhrkeJim CalmeJulie FedericoLarry ForniPat
12、ti McCalmontMichael McGrewCheryl TothAl VarneyRobert B. WallerTom WalshJohn BoalRanga DendiYatendra PathakDick WeadonNick AndreCarolyn TaylorHui FengKhalid AhmadRiad HartaniGhassem KoleyniOmayma MoharramRoderick WilsonDavid WhitefordGregory WrightMichael ZeugTuan A. PhamEliot RosenGlenn SissonDave V
13、anderMeidenGeorge AllenJohn RoquetB. SambasivanMike TisikerJim LordJason TorreyWesley DownumJim GarrahanJay HiltonZhi-Wei LinSelvam RengasamiNiranjan SandesaraRay P. SinghJoanie CardonSteve ShowellFarshid MohammadiStan WainbergTECHNICAL REPORT NO. 641SummaryThis report describes the general aspects
14、of the Operation of the Bearer Independent Call Control (BICC)Protocol with AAL Type 2 Signaling Protocol, Capability Set 1 (CS 1), used to control AAL type 2 bearerconnections.1. ScopeThis report contains information relevant to the operation of the Bearer Independent Call Control (BICC)Protocol, w
15、ith the AAL type 2 Signaling Protocol, Capability Set 1 (CS1), making use of the AAL type 2connection signaling model, contained in ITU-T supplement TRQ.2400. Information which is relevant tobe exchanged between the BICC signaling entity and the AAL type 2 signaling entity is identified. Thedashed b
16、ox of Figure 1 shows the scope of this report. Information passed between two peer BICCsignaling entities is a result of the logic within the BICC signaling entity. Interfaces to Layer Managementare outside the scope of this report.Note: The handling of reuse of idle bearer connections is outside th
17、e scope of the present report.BICC signaling PDUsBICCSignalingPrimitivesAAL type 2SignalingSAPBCF logicScope of this reportAAL type 2 ServiceEnd PointAAL type 2 signaling PDUsAAL type 2Served UserSAPprimitivesSAPprimitivesSAPprimitivesLayerManagementBCFCSFFigure 1Scope of this Report_A “|” indicates
18、 a change from the ITU-T Technical Report TRQ.3010 (1999). Strictly editorial changes are notshown.TECHNICAL REPORT NO. 6422. ReferencesThe following references are cited at the appropriate places in the text of this report:1 ITU-T Recommendation I.363.2 - B-ISDN ATM Adaptation Layer Type 2 Specific
19、ation2 ITU-T Recommendation I.366.1 - Segmentation and Reassembly Service Specific ConvergenceSublayer for the AAL Type 23 ITU-T Recommendation I.366.2 - AAL type 2 Service Specific Convergence Sublayer forTrunking4 ITU-T Recommendation X.200 - Information Technology Open System Interconnection Basi
20、c Reference Model: The Basic Model5 ITU-T Recommendation X.210 - Information Technology Open System Interconnection Basic Model: Convention for the Definition of OSI Services6 T1-672-2000 - Bearer Independent Call Control (BICC)7 ITU-T Recommendation Q.2630.1 - AAL type 2 Signaling Protocol (Capabil
21、ity Set 1)8 ITU-T Supplement TRQ.2400 - Signaling Requirements for AAL type 2 Link Control CapabilitySet 19 ITU-T Recommendation G.711 - modulation (PCM) of voice frequencies.10 ITU-T Recommendation G.722 - 7 kHz audio-coding within 64 kbit/s11 ITU-T Recommendation G.723.1 - Dual rate Pulse code spe
22、ech coder for multimediacommunications transmitting at 5.3 and 6.3 kbit/s12 ITU-T Recommendation G.726 - 40, 32, 24, 16 kbit/s Adaptive Differential Pulse CodeModulation (ADPCM)13 ITU-T Recommendation G.727 - 5-, 4-, 3- and 2-bits sample embedded adaptive differentialpulse code modulation (ADPCM)14
23、ITU-T Recommendation G.728 - Coding of speech at 16 kbit/s using low-delay code excitedlinear prediction15 ITU-T Recommendation G.729 - Coding of speech at 8 kbit/s using conjugate-structurealgebraic-code-excited linear-prediction16 ITU-T Recommendation H.221 - Frame structure for a 64 to 1920 kbit/
24、s channel in audiovisualteleservices.17 T1.113-2000 - Signaling System No.7 ISDN User Part18 ITU-T Recommendation Q.2610 - Broadband Integrated Services Digital Network (B-ISDN) Usage of Cause and Location in B-ISDN User Part and DSS 219 ITU-T Recommendation I.366.3 - AAL type 2 Service Specific Con
25、vergence Sublayer for Mobile3. DefinitionsNo definitions are introduced for the purpose of this report.TECHNICAL REPORT NO. 6434. AbbreviationsAAL ATM Adaptation LayerALC Link CharacteristicsATM Asynchronous Transfer ModeA2EA AAL type 2 Service Endpoint AddressBCF Bearer Control FunctionBICC Bearer
26、Independent Call ControlBNC-ID Backbone Network Connection IdentifierCID Channel IdentifierCPS Common Part SublayerCSF Call Server FunctionCS1 Capability Set 1DCME Digital Circuit Multiplication EquipmentIWFA Interworking Function AddressPDU Protocol Data UnitSAP Service Access PointSDU Service Data
27、 UnitSUGR Served User Generated ReferenceSSIA Service Specific Information (Audio)SSIM Service Specific Information (Multirate)USI User Service Information5. Information Exchanged Between BICC and AAL Type 2 Signaling EntitiesIt is assumed that the format of information passed between the BICC signa
28、ling entity and the AAL type 2Served User Converter is the same as the format of information passed between two peer BICC entities.No primitives are defined for this interface. The primitives passed between the AAL type 2 signaling entityand the AAL type 2 Served User are defined in Q.2630.1.The fol
29、lowing sub sections list the information passed between the BICC and AAL type 2 signaling entities.The relevant information relates to:1) Channel Attributes,2) Addressing,3) Binding Information, and4) Cause.In the following tables the relationship and appropriate conversion of information between th
30、e BICC andAAL type 2 signaling entities is performed by the AAL type 2 Served User Converter.5.1 Channel AttributesTable 1 identifies the Channel Attributes related information passed from the BICC signaling entity to theAAL type 2 signaling entity which are applicable to derive the AAL type 2 signa
31、ling parameters needed tocontrol the establishment of the AAL type 2 link.TECHNICAL REPORT NO. 644TABLE 1Mapping of Channel AttributesBICC Signaling Entity AAL type 2 Signaling EntityCodec Information note, or Link Characteristics (ALC), and/orUser Service Information note Service Specific Informati
32、on (SSIA, SSIM)Note: Codec Information is used if present, otherwise the User Service Information is used.5.1.1 Codec InformationTable 2 identifies the Codec type information passed from the BICC signaling entity to the AAL type 2signaling entity which are applicable to derive the AAL type 2 link ch
33、aracteristics needed to control theestablishment of the AAL type 2 bearer.TABLE 2Mapping of Codec Type to Link CharacteristicsAAL type 2 Signaling EntityLink CharacteristicsBICC Signaling EntityCodec TypeMaximumCPS-SDU BitRate (kbit/s)Average CPS-SDU Bit Rate(kbit/s)MaximumCPS-SDU Size(octets)Averag
34、e CPS-SDU Size(octets)G.711 64 kbit/s A-law64 64 8, 16, 24, 32, 40(note 2)As MaximumG.711 64 kbit/s -law64 64 8, 16, 24, 32, 40(note 2)As MaximumG.711 / H.221 56 kbit/s A-law56 56 7, 14, 21, 28, 35(note 2)As MaximumG.711 56 / H.221kbit/s -law56 56 7, 14, 21, 28, 35(note 2)As MaximumG.711 / H.221 48
35、kbit/s A-law48 48 6, 12, 18, 24, 30(note 2)As MaximumG.711 / H.221 48 kbit/s -law48 48 6, 12, 18, 24, 30(note 2)As MaximumG.722 (note 3)64 64 8, 16, 24, 32, 40(note 2)As MaximumG.723.1 (note 4)6.3 5.3 6.3 24 20 - 24G.723.1 Annex A (silencesuppression) (notes 4,5)6.3 2.8 3.2 24 20 - 2432 4, 8, 12, 16
36、, 20(note 2),G.726 (note 6)4040 5, 19, 15, 29, 25(note 2)As MaximumTECHNICAL REPORT NO. 645AAL type 2 Signaling EntityLink CharacteristicsBICC Signaling EntityCodec TypeMaximumCPS-SDU BitRate (kbit/s)Average CPS-SDU Bit Rate(kbit/s)MaximumCPS-SDU Size(octets)Average CPS-SDU Size(octets)32 4,8, 12, 1
37、6, 20(note 2),G.727 (note 6)4040 5, 10, 15, 20, 25(note 2)As MaximumG.728 (note 7)16 16 5, 10, 15, 20(note 2)As Maximum8 10, 20 (note 2)G.729 (note 8)11.811.8 15, 30 (note 2)As Maximum4 10, 20 (note 2)G.729 Annex B (silencesuppression) (notes 5, 8)11.85.9 15, 30 (note 2)As MaximumNotes1) The values
38、indicated do not include framing protocol overheads.2) The value used for CPS-SDU packet sizes are network dependent. It is worth noting that a greaterCPS-SDU packet size results in lower overheads but greater delay, while a lower CPS-SDUpacket size results in less delay but greater overheads.3) Cod
39、ec can change rate after every sample.4) Codec can change rate from 5.3 to 6.3 kbit/s, every 30 msec frame.5) 50% silence assumed.6) Codec may change rates between 16, 24, 32 and 40 kbit/s. 16 and 24 kbit/s are only used whenin overload. 32 kbit/s is the normal rate for voice, 40 kbit/s is used for
40、data.7) Codec may change rates between 9.6, 12.8 and 16 kbit/s. 9.6 and 12.8 kbit/s are only used whenin overload. 16 kbit/s is the normal rate for use.8) Codec may change rates between 6.4, 8 and 11.8 kbit/s. 8 kbit/s is used for normal quality, 11.8kbit/s for higher quality, and 6.4 kbit/s is used
41、 for DCME overload.Table 3 identifies the Codec type information passed from the BICC signaling entity to the AAL type 2signaling entity which are applicable to derive the AAL type 2 Signaling Service Specific Information whichmay be used to control the establishment of the AAL type 2 bearer.TECHNIC
42、AL REPORT NO. 646TABLE 3Mapping of Codec Type to Service Specific InformationBICC Signaling EntityCodec TypeAAL type 2 Signaling EntityService Specific Information Valuerefer to I.366.3 ITU-T profile 1 . 255Note1) The BCF logic entity by examining the Codec Type determines the ITU-T Profile to be us
43、ed for thetype 2 bearer connection.5.1.2 User Service InformationTable 4 identifies the User Service Information passed from the BICC signaling entity to the AAL type 2signaling entity which are applicable to derive the AAL type 2 Link characteristics which are needed tocontrol the establishment of
44、the AAL type 2 bearer. This mapping applies only if Codec type information isnot available.TABLE 4Mapping of User Service Information to Link CharacteristicsAAL type 2 Signaling EntityLink Characteristics (Note 1)BICC Signaling EntityUser Service InformationMaximumCPS-SDU BitRate (kbit/s)Average CPS
45、-SDU Bit Rate(kbit/s)Maximum CPS-SDU Size (octets)Average CPS-SDU Size(octets)64 kbit/s unrestricted 64 64 8, 16, 24, 32 40note 2As Maximum3.1 kHz audio 64 64 8, 16, 24, 32 40note 2As Maximum2 x 64(No procedures specified forUS networks.)- - - -384 384 384 40 401472 1472 1472 40 401536 1536 1536 40
46、401920(No procedures specified forUS networks.)- - - -Multirate (64 kbit/s base rate)1 n 2464*n 64*n 40 40Notes1) The values indicated do not include framing protocol overheads.TECHNICAL REPORT NO. 6472) The value used for CPS-SDU packet sizes are network dependent. It is worth noting that a greater
47、CPS-SDU packet size results in a lower delay, while a lower CPS-SDU packet size results in greateroverheads.Table 5 identifies the User Service Information passed from the BICC signaling entity to the AAL type 2signaling entity which are applicable to derive the AAL type 2 Service Specific Informati
48、on which maybe used to control the establishment of the AAL type 2 bearer. This mapping applies only if Codec typeinformation is not available.TABLE 5Mapping of User Service Information to Service Specific InformationBICC Signaling EntityUser Service InformationAAL type 2 Signaling EntityService Spe
49、cific InformationValue64 kbit/s unrestricted SSIA(CMD)SSIA(FRM)SSIMEnabledDisabled (note 1)Multiplier n, n = 13.1 kHz audio SSIA(FRM)SSIA (CMD)ITU-T Profile (note 2)A/-lawDisabledDisabled1 2550 or 12 x 64(No procedures specified forUS networks.)- -384 SSIA (CMD)SSIM (FRM)SSIMEnabledDisabled (note 1)Multiplier n, n = 61472 SSIA (CMD)SSIM (FRM)SSIMEnabledDisabled (note 1)Multiplier n, n = 231536 SSIA (CMD)SSIM (FRM)SSIMEnabledDisabled (note 1)Multiplier n, n = 241920(No procedures specified forUS networks.)
