1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Series Q Supplement 22 (1 2/1999) SERIES Q: SWITCHING AND SIGNALLING Technical Report TRQ.3000: Operation of the bearer independent call control (BICC) protocol with digital subscriber signalling system No. 2
2、 (DSS2) ITU-T Q-series Recommendations - Supplement 22 (Formerly CCITT Recommendations) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN S
3、PECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM RI SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 DIGITAL SUBSCRIBER SIGNALLING SYS
4、TEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 BROADBAND ISDN Q.1-Q.3 Q.4-Q. 59 Q.60-Q.99 Q.100-Q.119 Q. 120-Q.249 Q.250-Q.309 Q.310-Q.399 Q.400-Q.499
5、Q.500-Q.599 Q.600-Q.699 Q.700-Q.849 Q.850-Q.999 Q. 1000-Q. 1 O99 Q.1100-Q.1199 Q. 1200-Q. 1699 Q. 1700-Q. 1799 Q.2000-Q.2999 For further details, please rer to the list of ITD-T Recommendations. SUPPLEMENT 22 TO ITU-T Q-SERIES RECOMMENDATIONS TECHNICAL REPORT TRQ.3000: OPERATION OF THE BEARER INDEPE
6、NDENT CALL CONTROL (BICC) PROTOCOL WITH DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 2 (DSS2) Summary This Supplement to ITU-T Recommendation Q. 190 1 specifies the general aspects of Bearer Independent Call Control (BICC) protocol mapping with Digital Subscriber Signalling System No. 2 (DSS2) for AAL T
7、ype 1 bearer. Source Supplement 22 to ITU-T Q-series Recommendations was prepared by ITU-T Study Group 11 (1997-2000) and was approved under the WTSC Resolution 5 procedure on 3 December 1999. Q Series - Supplement 22 (12/1999) 1 FOREWORD ITU (International Telecommunication Union) is the United Nat
8、ions Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telec
9、ommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of
10、 the ITU-T is covered by the procedure laid down in WTSC Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this publication, the expression “Administration“ is used for conci
11、seness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this publication may involve the use of a claimed Intellectual Property Right. The ITU takes no
12、 position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the publication development process. As of the date of approval of this publication, the ITU had not received notice of intellectual property, pr
13、otected by patents, which may be required to implement this publication. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. o ITU 2001 All rights reserved. No part of this publication may be repr
14、oduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing fi-om the ITU. 11 Q Series - Supplement 22 (12/1999) CONTENTS 1 2 Scope . References . 3 Definitions 4 Abbreviations 5 Mapping Functions between BICC Signalli
15、ng Entity and DSS2 Signalling Entity . 5.1 Binding Information 5.2 Bearer service information 5.3 Address Information . 5.4 Cause . Q Series . Supplement 22 (12/1999) Page 1 . 111 Supplement 22 to Q-series Recommendations TECHNICAL REPORT TRQ.3000: OPERATION OF THE BEARER INDEPENDENT CALL CONTROL (B
16、ICC) PROTOCOL WITH DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 2 (DSS2) (Geneva, 1999) 1 Scope This Supplement contains information relevant to the operation of the Bearer Independent Call Control (BICC) protocol i, with the DSS2 4 signalling protocol used for the control of AAL type 1 bearer connectio
17、ns. Information which is relevant to be passed between the BICC i signalling entity and the DSS2 4 signalling entity is identified. The dashed box of Figwe 1-1 shows the scope of this Supplement. Interaction with layer management is outside the scope of this Supplement. NOTE - This is the user-side
18、of DSS2 in the case where the interface is to an ATM network. It can be the network-side on bilateral agreement. TI 11 11 140-00 Figure 1-1 - Scope of this Supplement Q Series - Supplement 22 (12/1999) 1 2 References The following Technical Reports and other references contain provisions which, thro
19、ugh reference in this text, constitute provisions of this Supplement. At the time of publication, the editions indicated were valid. All supplements and other references are subject to revision; all users of this Supplement are therefore encouraged to investigate the possibility of applying the most
20、 recent edition of the supplements and other references listed below. A list of the currently valid ITU-T Recommendations and supplements is regularly published. ITU-T Recommendation Q. 190 1 (2000), Bearer independent call control protocol KC). ITU-T Recommendation 1.363.1 (1996), Broadband Integra
21、ted Services Digital Network -ISDN) ATM Adaptation Layer Specijkation: Type 1 AAL. ITU-T Recommendation 1.6 1 O (1 999), B-ISDN operation and maintenance principles and functions. ITU-T Recommendation 4.293 1 (1995), Digital Subscriber Signalling System No. 2 (aSS2) - User-Network Interface (v2vr) -
22、 Layer 3 specijkation for basic call/connection control. ITU-T Recommendation 4.2941.3 (2000), Digital subscriber signalling system No. 2 - Generic identiper transport extension for support of bearer independent call control. ITU-T Recommendation 4.850 (1998), Usage of cause and location in the Digi
23、tal Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN User Part. ITU-T Recommendation 4.765 (2000), Signalling system No. 7 - Application transport mechan ism. ITU-T Recommendation 4.2965.1 (1999), Digital Subscriber Signalling System No. 2 - Support of Quality of Service class
24、es. ITU-T Recommendation 1.37 1 (2000), Trafic control and congestion control in B-ISDN. ITU-T Recommendation 4.2961.2 (1997), Support of ATM transfer capability in the broadband bearer capability information element. ITU-T Recommendation 4.763 (1999), Signalling System No. 7 - ISDN User Part format
25、s and codes. ITU-T Recommendation 1.356 (2000), B-ISDNATM layer cell transfer performance. ITU-T Recommendation 4.2610 (1999), Usage of cause and location in B-ISDN User Part and DSS2. Definitions No new definitions are introduced for the purpose of this Supplement. 4 Abbreviations This Supplement u
26、ses the following abbreviations: AAL ATM Adaptation Layer ATM Asynchronous Transfer Mode B-BC Broadband Bearer Capability BCF Bearer Control Function BICC Bearer Independent Call Control CSF Call Services Function 2 Q Series - Supplement 22 (12/1999) cs1 GIT N-ISUP QOS SN TMR us1 BICC Signalling Ent
27、ity Parameter (Call Control) Application Transport Parameter (BNC-ID) 7 Capability Set 1 Generic Identifier Transport Narrowband ISDN User Part Quality of Service Serving Node Transmission Medium Requirement User Service Information DSS2 Signalling Entity Information Element (Bearer Control) Generic
28、 Identifier Transport (BNC-ID) 5 5 Mapping Functions between BICC Signalling Entity and DSS2 Signalling Entity The following subclauses list the information passed between the BICC i, 7 signalling entity and the DSS2 signalling entity: 1) Binding information; 2) Bearer service information; 3) Addres
29、s information; and 4) Cause. The mapping reflected in the tables of this subclause show the information element or parameter name followed by the (information contents in parentheses). 5.1 Binding Information Binding information is used to associate call control signalling and bearer control signall
30、ing for the establishment of an ATM AAL Type 1 bearer. The Backbone Network Connection Identifier (BNC-ID) is carried by call control in the Application Transport Parameter 7. The BNC-ID is carried by bearer control in the Generic Identifier Transport 5. The mapping of Binding information between th
31、e BICC signalling entity and the DSS2 signalling entity is shown in Table 5- 1. Table 5-1 - Mapping of binding information 5.2 Bearer service information This subclause defines the mapping of the bearer service information contained in the BICC TMR parameter to the required DSS2 information elements
32、 for the support of AAL TYPE 1 bearer connections. NOTE - BICC Codec information is not used by this Supplement. Q Series - Supplement 22 (12/1999) 3 The DSS2 information elements required for the mapping of the bearer service information are shown in Table 5-2. - Broadband Bearer Capability - ATM t
33、raffic descriptor - QoS parameter (B-BC) Table 5-2 - DSS2 Information Elements required for the mapping of Bearer service information ATM adaptation layer Parameters (AAL parameters) DSS2 related information elements (see 4.5/Q.293 1 4) Bearer class BTC Information elements used to describe network
34、relevant bearer attributes Information elements used to describe lower layer attributes X X X 7 (Note 1) 7 (Note 1) 5 QoS class forward QoS class backward Table 5-3 shows the mapping between the BICC TMR parameter and the DSS2 broadband bearer capability information element and QoS parameter informa
35、tion elements. This mapping is independent of the TMR parameter codes. 1 (Note 2) O (Note 3) O (Note 3) 1 (Note 2) O (Note 3) O (Note 3) Table 5-3 - Mapping of the BICC TMR parameter and the DSS2 Broadband bearer capability and QoS parameter information elements BICC TMR parameter = Speech, 64kbits
36、unrestricted, 3.1 kHz audio, N*64 kbits DSS2 Broadband bearer capability information element contents 101 I Susceptibility to clipping I Not susceptible to clipping I I user plane configuration I Point-to-point I I DSS2 QoS parameter information element contents SI I 4 Q Series - Supplement 22 (12/1
37、999) Table 5-4 - Mapping of the BICC TMR parameter and the DSS2 AAL parameters information elements Speech, 64 kbit/s unrestricted or 3.1 kHz audio 384 kbit/s 1536 kbit/s 1920 kbit/s N*64kbit/s unrestricted unrestricted unrestricted DSS2 AAL parameters information element contents lo TMR TMR Codes T
38、MR DEFINITION 00000000 Speech 00000010 64 kbit/s unrestricted 0000001 1 3.1 kHz audio O O O O 1 O O O O O O O 1 O O 1 O O O O 1 O 1 O 384 kbit/s unrestricted 1536 kbit/s unrestricted 1920 kbit/s unrestricted AAL type ATM Traffic Descriptor 9, lo FornardBachvard peak cell rate (CLP = O + 1) (no OAM c
39、ells) (Note) PCR 171 cellsh 171 cells/s 171 cellsh 1022 cellsh 4086 cells/s 5 107 cells/s Subtype 2 (Circuit transport) CBR rate 64 (N) x 64 kbit/s I (N) x 64 kbit/s I (N) x 64 kbit/s I N*64 kbit/s Multiplier I Not applicable I 6 I 24 I 30 IN Source clock frequency recovery method O (Null) Error cor
40、rection method O (Null) SDT block size (Note) I 1 I N Partially filled cells 47 (Full fill) I NOTE - For single channel adaptation using AAL type 1, the SDT block size is set to 1. For 384 kbit/s, 1536 kbit/s, 1920 kbit/s and N*64, where N 1, the SDT block size is set to N. Table 5-5 shows the mappi
41、ng between the BICC TMR parameter and the ATM peak cell rates (CLP = O + 1) signalled in the ATM traffic descriptor information element. For each TMR parameter code, a value for the peak cell rate is selected such that the bit rate of the corresponding N-ISDN service (e.g. 64 kbitls, N x 64 kbitls)
42、can be transported as the cell payload of the ATM cells, i.e. excluding the overhead of the ATM cell and AAL type 1 header. Table 5-5 - Mapping of BICC TMR codes and ATM Peak Cell Rates in the ATM traffic descriptor BICC Signalling Enity (Call Control) DSS2 Signalling Entity (Bearer Control) Q Serie
43、s - Supplement 22 (12/1999) 5 BICC Signalling Enity (Call Control) TMR DSS2 Signalling Entity (Bearer Control) ATM Traffic Descriptor 9, lo FornardBachvard peak cell rate (CLP = O + 1) (no OAM cells) (Note) 000001 10 O O O O O 1 1 1 I TMRCodes I TMRDEFINITION I PCR 64 kbit/s preferred 171 cells/s 34
44、1 cells/s 2 x 64 kbit/s unrestricted O O O 1 O O O 1 O O O 1 O O 1 O I O O O 1 O O O O I 3 x 64 kbit/s unrestricted I 5 11 cells/s 4 x 64 kbit/s unrestricted 5 x 64 kbit/s unrestricted 681 cells/s 852 cells/s O O O 1 O O 1 1 O O O 1 O 1 O O 6 x 64 kbit/s unrestricted 7 x 64 kbit/s unrestricted 1022
45、cells/s 1 192 cells/s O O O 1 O 1 O 1 O O O 1 O 1 1 O 8 x 64 kbit/s unrestricted 9 x 64 kbit/s unrestricted 1362 cells/s 1532 cells/s I O O O 1 1 O O 1 I 12 x 64 kbit/s unrestricted I 2043 cells/s O O O 1 O 1 1 1 O O O 1 1 O O O I O O O 1 1 O 1 O I 13 x 64 kbit/s unrestricted I 22 13 cells/s 10 x 64
46、 kbit/s unrestricted 11 x 64 kbit/s unrestricted 1703 cells/s 1873 cells/s O O O 1 1 O 1 1 O O O 1 1 1 O O 14 x 64 kbit/s unrestricted 15 x 64 kbit/s unrestricted 2383 cells/s 2554 cells/s O O O 1 1 1 O 1 O O O 1 1 1 1 O 16 x 64 kbit/s unrestricted 17 x 64 kbit/s unrestricted 2724 cells/s 2894 cells
47、/s O O O 1 1 1 1 1 O O 1 O O O O O 18 x 64 kbit/s unrestricted 19 x 64 kbit/s unrestricted 3064 cells/s 3235 cells/s O O 1 O O O O 1 O O 1 O O O 1 O 20 x 64 kbit/s unrestricted 21 x 64 kbit/s unrestricted 3405 cells/s 3575 cells/s I NOTE - No OAM cells are included in the PCR calculations. O O 1 O O
48、 O 1 1 O O 1 O O 1 O O 6 22 x 64 kbit/s unrestricted 23 x 64 kbit/s unrestricted 3745 cells/s 39 15 cells/s Q Series - Supplement 22 (12/1999) O O 1 O O 1 O 1 O O 1 O O 1 1 O 24 x 64 kbit/s unrestricted 25 x 64 kbit/s unrestricted 4086 cells/s 4256 cells/s O O 1 O O 1 1 1 O O 1 O 1 O O 1 26 x 64 kbi
49、t/s unrestricted 27 x 64 kbit/s unrestricted 4426 cells/s 4596 cells/s O O 1 O 1 O 1 O O O 1 O 1 O O O 28 x 64 kbit/s unrestricted 29 x 64 kbit/s unrestricted 4766 cells/s 4937 cells/s 5.3 Address Information This subclause describes the address information mapping between the BICC signalling entity and the DSS2 signalling entity. Address mapping between the BICC signalling entity and DSS2 signalling entity is shown in Table 5-6. BICC Signalling Entity (Parameter) Application Transport Parameter 7 (T-BIWF-address) Table 5-6 - Mapping of Address inform
