ITU-T IP/MediaCom 2004 Workshop
April 26, 2001
Presented by Greg Ratta (
GR010426-1
), ITU-T SG 11 Vice-Chairman
Outline
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Introduction - What is BICC?
BICC Architecture
Overview of BICC Capability Set 1
BICC Capability Set 2 and H.248
Summary
GR010426-2
What is BICC?
• BICC provides a means of supporting narrowband ISDN
services across a broadband backbone network without
impacting the interfaces to the existing N-ISDN network and
end-to-end services.
• The BICC call control signaling protocol is based on N-ISUP
signaling
• The bearer control signaling protocols are based on different
bearer technology control signaling protocols (e.g., DSS2 for
AAL type 1 and AAL type 2)
• The BICC call control signaling protocol should not be aware
of the actual bearer transport being employed. The binding
information is used to reference the bearer.
GR010426-3
BICC network architecture
ISN
ISUP
ISN
CSF
BCF
BICC
CMN
Bearer
Sign.
BICC
Bearer
Sign.
CSF
BCF
TDM trunks
TDM trunks
BF
PSTN/ISDN network
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ISUP
Data Network
BICC network
BF
PSTN/ISDN network
BICC Capability Set 1
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Forward and Backward Backbone Network Establishment
Transport Call Control via MTP SS7 or ATM
Support of most existing narrow band services.
New Backbone Network Connection (BNC) with or
without Codec Negotiation
• Reuse of Idle Backbone Network Connection (BNC)
• Separate Release of Call and Backbone Network
Connection (BNC)
• Bearer Transport Types supported: AAL 1 & AAL 2
GR010426-5
Forward bearer set-up and backward
bearer set-up
ISN
ISN
Data Network
“bearer + call
SETUP request”
ISUP signalling
Forward bearer set-up
“call SETUP request”
BICC signalling
“call SETUP confirmation”
Bearer signalling
“bearer SETUP”
“bearer SETUP”
“bearer CONNECT”
“bearer + call
SETUP request”
Barckward bearer set-up
“bearer CONNECT
“bearer + call
SETUP request”
GR010426-6
“call SETUP request”
“bearer SETUP”
“bearer SETUP”
“bearer CONNECT”
“bearer CONNECT”
“bearer + call
SETUP request”
“Early bearer +call SETUP request”
to improve call set-up time
ISN
ISN
Data Network
“bearer + call
SETUP request”
Forward bearer set-up
“call SETUP request”
“early bearer + call
SETUP request”
“call SETUP confirmation”
“bearer SETUP”
“bearer SETUP”
“bearer CONNECT”
“bearer CONNECT
GR010426-7
“bearer + call
SETUP request”
Additional “confirmation of bearer
CONNECT” to prevent speech clipping
ISN
ISN
Data Network
“bearer + call
SETUP request”
“call SETUP request”
Forward bearer set-up
“call SETUP confirmation “
“bearer SETUP”
“bearer SETUP”
“bearer CONNECT”
“bearer CONNECT
“confirmation of bearer CONNECT”
GR010426-8
“bearer + call
SETUP request”
Structure of the BICC standardization
documentation
ISUP
BICC
Q.764
ISUP protocol
Q.765
APM mechanism
Q.765.5
APP for BICC
TRQ.2140
BICC architecture
+ other
DSS2
Q.2931
DSS2 protocol
Q.2941.3
GIT mechanism
Q.1901
BICC protocol
+ other
AAL2
Q.2630.1
AAL2 protocol
+ other
Bearer Networks
BICC signalling transport
TRQ.3000
DSS2 bearer
Q.1901Annex C
MTP3 & MTP3b
TRQ.3010
AAL2 bearer
Q.1901Annex D
SSCOP
TRQ.3020
B-ISUP bearer
+ other
B-ISUP
Q.2764
B-ISUP protocol
Q.2726.4
AGI mechanism
+ other
GR010426-9
BICC Capability Set 2 and Beyond
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Extend BICC to the Local Exchanges
Support IP Bearer, including Tunnelling
Support of a Call Mediation Node Function
Support Structured AAL1
New Identifiers
– Traffic Group
– Global Call Reference
• Extend BICC to Special Resources Nodes (e.g.,
announcement platforms…etc)
• See list of features attached to this presentation
GR010426-10
Functional architecture of the decomposed gateway
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H.245
Signalling
Termination
X
With BICC CS 1
RAS
Signalling
Termination
High Layer
Resource
Control
B1
C
SCN
Signalling
Termination
D
B2
H.225.0
Signalling
Termination
A
Low Layer
Resource
Control
Y
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Packet and
Circuit
Media
Termination
Z
“ISN”
SCN
Signalling
Transport
Termination
Z
Functional architecture of the decomposed gateway
X
X
H.245
Signalling
Termination
X
With BICC CS 2
RAS
Signalling
Termination
High Layer
Resource
Control
B1
C
SCN
Signalling
Termination
D
Z
B2
H.225.0
Signalling
Termination
H.248 BICC
“CBC”
A
Low Layer
Resource
Control
Y
GR010426-12
SCN
Signalling
Transport
Termination
Packet and
Circuit
Media
Termination
Z
“Decomposed
ISN”
Network Topologies and Reference Points
C a ll C o n tr o l S ig n a llin g
O th e r S e r v ic e
S u p p lie r
N e tw o r k
TE
C a ll C o n tr o l S ig n a llin g
TE
nni
TE
B I C C S e r v ic e
S u p p lie r
N e tw o r k
C a ll C o n tr o l S ig n a llin g
TE
C a ll C o n tr o l S ig n a llin g
TE
ani
A ccess
N e tw o r k
TE
uni
GR010426-13
BICC CS 2 and Beyond
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Q.1902.1, BICC CS2 Functional Description
Q.1902.2, BICC CS2 General functions of messages and signals
Q.1902.3, Common Formats and Codes for BICC and ISUP
Q.1902.4, BICC protocol elements
Q.1902.5, Exceptions to APM in the context of BICC
Q.19xx.1, Interworking between BICC and ISUP
Q.19xx.2, Interworking between ISUP compatible signalling systems
and the BICC protocol
Q.19xx.3, Interworking between the H.225.0 Multimedia Call Control
protocol in an H.323 network and the BICC protocol
Q.19xx.4, Interworking DSS 2 to BICC
Q.19xy, Interaction between the INAP protocol and the BICC protocol
Q.ibcp, BICC IP Bearer Control Protocol
Q.cbc, Call and Bearer Control Protocol
Annex E to Q.1901, Signalling Transport Convergence for SCTP
+ Supplements that document the signalling requirements
GR010426-14
Summary
• BICC CS 1 Standards were completed in 9
months
• BICC CS 2 uses H.248 in CBC interface
• All new services in ITU-T SG 11 to be
specified for BICC before being added to
ISUP or BISUP
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BICC Acronyms
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AAL
ACF
ACN
AESA
AGI
ANI
APM
ATM
BCF
BF
BICC
BIWF
BNC
CSF
CSM
CMN
B-ISUP
DSS2
GAT
GFT
GIT
GSN
ATM Adaptation Layer
Access Control Function
Access Concentration Node
ATM End System Address
Application Generated Identifier
Access Network Interface
Application transport Message
Asynchronous Transfer Mode
Bearer Control Function
Bearer Function
Bearer Independent Call Control
Bearer Interworking Function
Backbone Network Connection
Call Service Function
Call State Model
Call Mediation Node
Broadband ISUP
Digital Signalling System no.2
Generic Addressing and Transport protocol
Generic Function Transport control
Generic Identifier Transport
Gateway Serving Node
GR010426-16
•IN
•IP
•ISDN
•ISN
•ISUP
•MTP3b
•NNI
•POP
•PSTN
•SN
•SPOI
•SS7
•SSCOP
•STP
•SWN
•TDM
•TE
•TG
•TSN
•UNI
•VCC
•VoIP
Intelligent Networks
Internet Protocol
Integrated Services Digital Network
Interface Serving Node
ISDN User Part
Message Transfer Part no.3b
Network-Network Interface
Point of Presence
Public Switched Telephony Network
Serving Node
Signalling Point of Interconnection
Signalling System no.7
Service-Specific Connection-Oriented Protocol
Signalling Transfer Point
Switching Node
Time Division Multiplexing
Terminal Equipment
Trunk Group
Transit Serving Node
User Network Interface
Virtual Channel Connection
Voice-over-IP