Enabling Architectures
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1 Institute of Public Utilities, Michigan State University 2014 Annual Regulatory Studies Program Enabling Architectures Protocols and Frameworks For Today s Service Provider Networks ETC GROUP, LLC David J. Malfara, Sr.
2 Protocols & Frameworks Agenda Network Evolution: Beyond the OSI Model IMS A New Control Layer Applications: Network-centric or OTT? Discussion - Futures 2014 ETC Group, LLC 2
3 OSS/BSS Operational View Old World Monolithic Stovepipe Structure New World Layered Next-Gen Structure Voice Internet Private/VPN Networking Drivers Outcome Maintenance Administration Maintenance Administration Maintenance Administration Flat Growth of Voice Market Service/Application Layer New Service Opportunities Service Provisioning Account Provisioning Service Provisioning Account Provisioning Service Provisioning Account Provisioning Massive Growth of Data Traffic Control Layer New Efficient OAM&P Order Processing Sales/Vendor BSS Order Processing Sales/Vendor BSS Order Processing Sales/Vendor BSS Maturity of Convergence Technology Transport Layer New Network Architecture 2014 ETC Group, LLC 3
4 Service Provider Nirvana 2010 SeaChange 2014 ETC Group, LLC 4
5 Competing Models OSI vs. NGN 2014 ETC Group, LLC 5
6 The Encapsulation of Functions in a Packet Architecture (OSI Model) 2014 ETC Group, LLC 6
7 Comparing TDM to VoIP The OSI Reference Model TDM VoIP 2014 ETC Group, LLC 7
8 Current Option : TDM Interconnection Competitor RBOC Every Access Tandem Every LATA 2014 ETC Group, LLC 8
9 TDM Interconnection (Dedicated High Cost CapEx and OpEx) TDM Minimum Interconnection Points LATA 1 IP Network IP Soft Switch Signaling Gateway Media Gateway IP Media Gateway Media Gateway LATA 2 LATA 3 IP Media Gateway Media Gateway LATA 4 LATA 5 User End Points 2014 ETC Group, LLC 9
10 VoIP-to-TDM Interconnection Transition Media Gateway: TDM/IP (Circuit to Packet) Signaling Gateway: SS7/SIP (Packet to Packet) 2014 ETC Group, LLC 10
11 Inter-carrier VoIP Call Interconnection Using SBC Functionality 2014 ETC Group, LLC 11
12 Multimedia Networks 2014 ETC Group, LLC 12
13 Evolution OSI to IMS-enabled NGN OSI MODEL NGN MODEL Application Presentation Session Transport Network Data Link Physical Application Control Transport 2011 ETC Group, LLC 2014 ETC Group, LLC 13
14 IMS A New Control Layer Converging Network Intelligence 2014 ETC Group, LLC 14
15 IMS - Industry Adoption 3GPP (3 rd Generation Partnership Project including ATIS) IETF (Internet Engineering Task Force) European Telecommunications Standards Institute (TISPAN) ITU-T (ITU-Telecommunications Standardization Sector) CableLabs (PacketCable 2.0) 2014 ETC Group, LLC 15
16 IMS-enabled Convergence 2014 ETC Group, LLC 16
17 IP Multimedia Subsystem Radvision 2014 ETC Group, LLC 17
18 CableLabs PacketCable 2.0 Reference Architecture 2014 ETC Group, LLC 18
19 ETSI TISPAN IMS-Oriented NGN Architecture 2014 ETC Group, LLC 19
20 4. IMS level registration IMS Prerequisites Prerequisites to get the IMS service From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. IMS Terminal IP Connectivity Access Network IMS Network Provider 1. Establishment of an IMS service contract 2. Getting IP access connectivity Acquiring an IP address 3. P-CSCF address discovery 4. IMS level registration Prerequisites to get the IMS service 2014 ETC Group, LLC 20 From The 3G IP Multimedia Subsystem (IMS), Third Edition
21 4. IMS level registration IMS Prerequisites Registration to get the IMS service From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. IMS Terminal P-CSCF I-CSCF HSS S-CSCF (1) REGISTER (10) 401 Unauthorized (2) REGISTER (9) 401 Unauthorized (3) Diameter UAR (4) Diameter UAA (5) REGISTER (6) Diameter MAR (7) Diameter MAA (8) 401 Unauthorized (11) REGISTER (12) REGISTER (13) Diameter UAR (14) Diameter UAA (15) REGISTER (16) Diameter SAR (20) 200 OK (19) 200 OK (18) 200 OK (17) Diameter SAA Registration at the IMS level 2014 ETC Group, LLC 21
22 Resource Reservation Resource Reservation 4. IMS level registration Session Prerequisites to get the IMS Setup service (1) From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. Originating Visited Network Originating Home Network Terminating Home Network Terminating Visited Network IMS Terminal #1 P-CSCF (1) INVITE (2) 100 (3) INVITE Trying (4) 100 Trying Evaluation of initial filter criteria (20) 183 Session Progress (21) PRACK (30) 200 OK (19) 183 Session Progress (22) PRACK (29) 200 OK S-CSCF (5) INVITE (6) 100 Trying (18) 183 Session Progress I-CSCF (7) Diameter LIR HSS (8) Diameter LIA (9) INVITE (10) 100 Trying (17) 183 Sesssion Progress (23) PRACK (28) 200 OK S-CSCF Evaluation of initial filter criteria (11) INVITE (12) 100 Trying (16) 183 Session Progress (24) PRACK (27) 200 OK P-CSCF (13) INVITE (14) 100 Trying (15) 183 Session Progress (25) PRACK (26) 200 OK IMS Terminal #2 Pre-alert user (31) UPDATE (32) UPDATE (33) UPDATE (34) UPDATE (35) UPDATE (40) 200 OK (39) 200 OK (38) 200 OK (37) 200 OK (36) 200 OK Alert user 2014 ETC Group, LLC 22 Basic session setup, part 1
23 4. IMS level registration Prerequisites to get the IMS service Session Setup (2) From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. Originating Visited Network Originating Home Network Terminating Home Network Terminating Visited Network IMS Terminal #1 P-CSCF S-CSCF I-CSCF HSS S-CSCF P-CSCF IMS Terminal #2 (46) 180 Ringing (45) 180 Ringing (44) 180 Ringing (43) 180 Ringing (42) 180 Ringing (41) 180 Ringing Alert user (47) PRACK (48) PRACK (49) PRACK (50) PRACK (51) PRACK (56) 200 OK (62) 200 OK (55) 200 OK (61) 200 OK (60) 200 OK (54) 200 OK (59) 200 OK (53) 200 OK (58) 200 OK (52) 200 OK (57) 200 OK Accept session (63) ACK (64) ACK (65) ACK (66) ACK (67) ACK Media plane 2014 ETC Group, LLC Basic session 23 setup, part 2
24 Applications & Service Creation Network-centric or OTT? 2014 ETC Group, LLC 24
25 IP Multimedia Subsystem Radvision 2014 ETC Group, LLC 25
26 3. P-CSCF address discovery 4. IMS level registration IMS Prerequisites to get the IMS service HSS User Profile From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. User Profile Private User Identity 1 to n Service Profile n Service Profile 2 Service Profile 1 1 to n Public Identification n Public Identification 2 Public Identification 1 0 to n Initial Filter Criteria n Initial Filter Criteria 2 Initial Filter Criteria 1 0 to n Shared Initial Filter Criteria n Shared Initial Filter Criteria 2 Shared Initial Filter Criteria ETC Group, LLC 26 Simplified representation of the structure of the user profile
27 3. INVITE OK 3. P-CSCF address discovery IMS Application 4. IMS level registration Server Initial Prerequisites Filter to get the IMS Criteria service From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. Initial Filter Criteria Priority 0 to 1 Trigger Point Trigger Point 1 to n Service Point Trigger Service Point Trigger Service Point Trigger 1. INVITE 2. INVITE AS IMS Home Network Request-URI SIP Method SIP Header Session Case Session Description OK OK P-CSCF S-CSCF An Application Server acting as a terminating SIP UA is providing services in the originating call leg Application Server SIP URI Default Handling Service Information 2014 ETC Group, LLC 27 Structure of initial filter criteria
28 3. INVITE 4. INVITE OK OK 3. P-CSCF address discovery IMS Application 4. IMS level registration Server Service Prerequisites to get Announcement the IMS service Example From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. IMS Home Network AS 5. INVITE OK MRFC 1. INVITE 2. INVITE OK OK MRFP I-CSCF RTP S-CSCF An example of a service 2014 ETC Group, LLC 28
29 5. INVITE 6. INVITE OK OK 3. P-CSCF address discovery IMS Application 4. IMS level registration Server Multi-service Prerequisites to get the IMS Session From The 3G IP Multimedia Subsystem (IMS), Third Edition Gonzalo Camarillo and Miguel A. García-Martín 2008 John Wiley and Sons, Ltd. AS #1 AS #2 AS #3 IMS Home Network 3. INVITE 4. INVITE OK OK 7. INVITE 8. INVITE OK OK 1. INVITE 2. INVITE 9. INVITE 10. INVITE OK OK OK OK I-CSCF S-CSCF P-CSCF A few Application Servers providing services 2014 ETC Group, LLC 29
30 Service Configuration in the IMS (Open Mobile Alliance -XDM) IMS Services Presence Location Instant Messaging Conferencing Multimedia Session Continuity 2014 ETC Group, LLC 30
31 Over The Top & IMS Are NOT (exactly) Mutually Exclusive 2014 ETC Group, LLC 31
32 Future Applications Using IMS Enablers Broadcast with Awareness Workflow Conferencing Co-existent Location based Sharing Location-based Advertising 2014 ETC Group, LLC 32
33 Questions? ETC GROUP, LLC David J. Malfara, Sr.
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