ISC Reference Architecture Functional Planes
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1 ISC Reference Architecture Functional Planes v1.0, Jan 2002 Management Plane Service/Application Plane Application/Feature Servers (SCP, Service Logic), Server IN/AIN Open APIs (Parlay, Jain, CAMEL, SIP, AIN/INAP) Control & Plane Call Agents, MGC, Softswitch SIP/SIP-T; H.323 Inter-Network Switch Subscriber & Service Provisioning, Network Management, Operational Support, Billing Support IP Transport Domain: IP Backbone, Routers, Switches, BGs QoS Mechanisms (RSVP, Diffserv, MPLS ) (ISUP, MAP, RANAP, MGCP, MEGACO, SIP) Transport Plane Non-IP Access Domain: Wireline Access (AG, Access Proxies) Mobile Access (RAN AG) Broadband Access (IADs, MTAs) Interworking Domain: TG (MG), SG, Interworking GW SS7; TDM/ATM IP PSTN/SS7/ATM Networks Other VoIP Networks IP Phones (H.323, SIP, MGCP, ), IP Terminals, IP PBXs Non-IP Terminals/ Mobile Networks
2 ISC Reference Architecture Functional Entities v1.0, Jan 2002 Service & Application Call Control & SPS-F/R-F/A-F AS-F/SC-F MS-F CA-F/MGC-F Other IP Network (SIP, H.323) IW-F (MGC-F) IP SG-F TG (MG-F) SS7 TDM PSTN/IN Transport IP Phone (MG-F) (SIP, H.323, ) AG AGS-F MG-F Access Network (Wireline/Wireless) NOTE: Management Function Not Shown for Simplicity ISC Functional Definitions: AS-F: Application Server Function; SC-F: Service Control Function; CA-F: Call Agent Function; MGC-F: Controller Function; SPS-F: SIP Proxy Server Function; R-F: (Call) Routing Function; A-F: Accounting Function (e.g., AAA); MS-F: Server Function; SG-F: Function; MG-F: Function; IW-F: Interworking Function; AGS-F: Access Function; AG: Access ; TG: Trunking
3 ISC Reference Architecture MGC Building Blocks Application Server OSS Agent Open Service Access (a.k.a. 3 rd Party Application ) OEM Agent Interworking/Border Connection Manager (IWF/Inter-Operator Proxy)) Call Control & (CA-F) Access Session Manager & Mobility (R-F/A-F) AAA ENUM HSS Proxies ( WAP, CLI ) Connection Session Manager (QoS/MGC-F) Terminal agents, Network agents SG (SG-F), AG (AGS-F) TG/MG/AG (MG-F), MS (MS-F)
4 ISC Reference Architecture Physical Example e.g., Voic Application Server MS MS-F SIP/MGCP e.g., server for digit collection & announcement AS AS-F SIP ENUM/ TRIP ENUM/ TRIP OSS Back Office SNMP NMS OSS SS7/BICC Network IN SCP PSTN SS7/BICC TDM SIP/MGCP SG SG-F TG MG-F MGCP/ (ISUP, INAP) (MAP, IS41) RTP/RTCP MGC/CA R-F A-F SPS-F IW-F MGC-F CA-F SIP/MGCP / p Access Proxy (IUA, V5UA) RTP/RTCP AGS-F AG SIP or H.323 MGCP/ MG-F SIP or H.323 Network SIP/SIP-T External SoftSwitch RTP/ RTCP IP Phone Access Network (Wireline/Wireless) IMPORTANT NOTE: the dashed lines represent the realization of information flows achieved by selecting specific protocol and interfaces to meet service requirements; this figure and its associated protocol choices is informative only.
5 System Example Wireline network Server MGCP, H.248, SIP MGCP, H.248, SIP Open APIs Application Server Third Party Service Controller/Call Agent Wireline Access Network Wireless SIP/SIP-T, H.323, Q.BICC IP Phone or Terminal (H.323, SIP, MGCP, ) RTP/RTCP H.323, SIP, MGCP, (M3UA, IUA, V5UA) Access RTP/ RTCP Controller/Call Agent Control MGCP MGCP (M3UA/ SCTP) Control Trunk SS7/BICC ISUP INAP PSTN/IN IN SCP PSTN/IN TDM/ATM SS7/BICC
6 Examples POTS Carried over IP Controller MGCP/ Analog Line PSTN Access RTP Trunking NOTE: The Access here is also commonly called: a. (MG), or b. Residential (RG)
7 Examples Access Network (V5, ISDN) over IP MGCP/ MGC Analog Line or ISDN BRI/PRI : V5UA or IUA AN PSTN + V5 (V5.2) or ISDN (Q.921) Access RTP Trunking Access (AG) includes both MG-F and AGS-F AN: Access Network BRI: Basic Rate Interface; PRI: Primary Rate Interface
8 Examples Cable Network (PacketCable TM ) CA/MGC Analog Line IP over HFC NCS or SIP AG: MTA Cable Modem DOCSIS Network CMTS Ethernet RTP PSTN Trunking NOTE: The Access here is called: a. Multimedia Terminal Adaptor (MTA), or b. Residential (RG) DOCSIS: Data over Cable System Interface Specification CMTS: Cable Modem Termination System NCS: Network Control (modified MGCP for PacketCable)
9 Examples VoDSL and IAD over IP MGC Analog Line IP over ATM MGCP or Ethernet AG: IAD DSL Network DSLAM Packet Network (IP or ATM) ATU-R RTP PSTN Trunking NOTE: The Access here is called: Integrated Access Device (IAD) DSLAM: Digital Subscriber Line Access Multiplexer ATU-R: Asymmetric Digital Subscriber Line (ADSL) Terminal Unit Remote
10 PSE HSS Application Server Examples Wireless (3GPP R99 special case a la NGN) : BSSAP or RANAP over M3UA/SCTP MSC Server GMSC Server E1/T1/ATM: + RAN PSTN/ PLMN AG: RTP NOTE: The Access here is referred to as: (MG) RAN: Radio Access Network (GSM or 3G) MSC: Mobile Switching Center; GMSC: MSC Note: MSC Server or GMSC Server is equivalent to MGC
11 PSE HSS Examples Wireless (3GPP R2000 All IP General Case) 3rd Party Application Server : BSSAP or RANAP MMCS/MMAS MGC IP: + SIP, Non SIP RAN SGSN/GGSN RTP PSTN/ PLMN non IP SIP NOTE: The Access here is referred to as: (MG) and can be in the terminal (SIP mobiles) or at the Radio Node Controllers RAN: Radio Access Network (3G) MMCS: Multi Call Server MMAS: Multi Application Server
12 System Example WCDMA mobile network VLR HLR MAP Open APIs (M3UA/SCTP) OSA Application Server Third Party Service Open APIs OSA MSC Server SIP/SIP-T, H.323 Q.BICC MAP GMSC Server (M3UA/SCTP) Open APIs OSA Conversion (M3UA/SCTP) Application Server Third Party Service Conversion Control (M3UA/SCTP) RTP/ RTCP Control SS7/BICC ISUP CAP PSTN SS7/BICC BSSAP RANAP & s PSTN/PLMN TDM/ATM SS7 TDM RAN ATM ATM
13 Acronyms AAA Authentication, authorization, and accounting (IETF) BSSAP Base station subsystem application part (GSM, 3GPP) BICC Bearer independent call control (ITU) CAP CAMEL application part (GSM, 3GPP) CMTS Cable modem termination system (DOCSIS, PacketCable TM ) ENUM E.164 number (IETF) HSS Home subscriber system (3GPP) IAD Integrated access device (DSL) MAP Mobile application part (GSM, 3GPP) MEGACO gateway control (IETF/ITU) MGCP gateway control protocol (IETF) MMCS/MMAS Mobile multimedia call server/mobile multimedia application server (3GPP) MSC/GMSC Mobile service center/ MSC (GSM, 3GPP) MTA Multimedia terminal adaptor (PacketCable TM ) NCS Network call signaling (PacketCable TM ) PLMN Public land mobile network (3GPP, UMTS) PSE Personal service environment (3GPP) OSA Open service access (3GPP) RANAP Radio access network application part (3GPP) SGSN/GGSN Serving GPRS system node/ GPRS system node (GPRS, 3GPP) SIGTRAN transport application network? (IETF) TRIP Telephony routing interworking protocol (IETF) VLR/HLR Visitor location register/home location register (GSM, 3GPP)
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