NGN Next Generation Network (NGN) is a service oriented network. Through the separation of service and call control, the service- independent architecture is implemented, which makes services independent of switching network. NGN provides integration of voice, data, fax, and video services.

NGN (Contd) In broad sense it refers to the next generation integrated network that adopts new technologies extensively, focuses on IP, and provides voice, data, and multimedia service at the same time. In narrow sense it refers to the open system structure that employs soft switch at the control layer.

NGN LAYER ARCHITECTURE Service Management Network Control Core Switch Edge Access

NGN Network Architecture

System capacity Item Specification Maximum number of supported TDM trunks 360,000 Maximum number of supported gateways 2,000,000 Maximum capacity of supported black and white lists 1,000,000 Maximum capacity of supported external prepaid card numbers Maximum number of supported subscribers POTS subscribers: 2,000,000 V5 subscribers: 2,000,000 IPN subscribers: 200,000 IP consoles: 100,000 Maximum number of supported multimedia terminals SIP terminals: 2,000,000 H.323 terminals: 1,000,000 对本章的课程内容、要达到的能力和注意事项等进行总结 小结可以不仅限于一个章结束时使用，一段相对完整的内容讲授完就可以总结一下。 此页授课和胶片＋注释都要使用。

C4 OFFICE (PRESENT CONFIGURATION)

SOFT SWITCH (SOFTX 3000) As a SoftSwitch product, SoftX3000 is located at the core control layer of NGN scheme. SoftX3000 acts as a generic Call Controller in the packet-switched network, supports the interworking between PSTN,H. 323, SIP, and MGCP domains. SoftX3000 provides H. 248 and MGCP based bearer control. In the NGN solution of Huawei, SoftX3000 acts as the core of NGN, interworking with other NGN components through the open network adopting distributed standard protocols.

COMPLETE NETWORK LAYOUT

PHYSICAL STRUCTURE OF SOFTX 3000

LOGICAL STRUCTURE OF SOFTX 3000

TRUNKING DIAGRAM OF NGN Soft Switch Packet Core Network SG7000 Quetta Sukkur Hyderabad Karachi Jehlum Bannu Peshawar Mardan Abottabad Islamabad Multan Sahiwal Gujranwala Faisalabad Sargodha Bahawalpur Sialkot Lahore GUjrat Burewala MRS IAD

UMG E1 status at LX side S.No UMG Total E1's (Installed H.W ) Planned E1's Working E1 's Pending E1's Spare E1's Status 1 Islamabad 308 290 205 85 28 connected & operational 2 Karachi 288 283 244 39 5 3 Abbotabad 64 26 18 8 38 4 Bahawalpur 96 84 56 12 Bannu 19 14 45 6 Burewala 29 35 connected but not tested 7 Faisalabad 160 120 110 10 40 Gujrat 54 9 Gujranwala 128 76 52 Hyderabad 11 Jehlum 16 48 Lahore 476 402 340 62 74 13 Mardan 36 Multan 101 79 22 27 15 Peshawar 124 100 24 Quetta 67 17 Sahiwal 41 25 23 Sialkot 58 46 Sukkur 43 20 Sargodha   Total E1s 2512 1967 1501 466 555

UMG 8900 Functionality Features UMG8900 supports inter-working between different bearer networks and provides conversion function between different traffic flow formats: UMG8900 can server as Trunk Gateway (TG); Act As Access Gateway (AG) in NGN network; Support Embedded Signaling Gateway (SG) function simultaneously. By networking with soft switching devices, UMG8900 can act as next-generation TDM switch adopting next-generation (NGN) architecture to provide all services of PSTN and achieve smooth evolvement to NGN.

UMG 89000 (Cont’d) UMG8900 serves as TG or AG in NGN or as the traditional PSTN switch and the next-generation switch. In NGN, UMG8900 is applied in the gateway exchange and toll exchange as large-capacity TG. Through the combined networking with soft switching device , UMG8900 can provide next-generation TDM switch application. MG8900 can act as tandem exchange / toll office / gateway exchange / C5 networking application of PSTN to implement the seamless evolution to NGN. Provides AG function of large capacity via RSP user frame of UMG8900 accesses user directly.

PROTOCOL STACK OF SOFTX 3000

Application Protocols Signaling Transmission Protocols Interface Application Protocols Signaling Transmission Protocols SoftX3000-SG SIGTRAN M3UA/M2UA/SCTP/IP SoftX3000-TMG H.248 UDP/IP、SCTP/IP、TCP/IP SoftX3000-AMG MGCP UDP/IP SoftX3000-IAD MGCP、H.248 SoftX3000-MRS SoftX3000-Terminal SIP H.323 UDP/IP、TCP/IP SoftX3000-SoftSwitch SoftX3000-PSTN/ISDN SS7 MTP SoftX3000-SIP SoftX3000-H.323 SoftX3000-NMS MML - SoftX3000-BC FTP or FTAM TCP/IP

System processing capability Item Specification BHCA of a single service processing module 400k BHCA of the system 16000k Call drop rate  0.01% Call setup time Calls between intra-domain subscribers:  200 ms Calls between both intra-domain subscribers and out-domain subscribers:  500 ms

Services & Functions SERVICES Voice Services IP Centrex Services Multimedia Services IPN Services IN based Value Added Services FUNCTIONS Support for Multi-Country-Code and Multi-Area-Code Functions Support for Multi-Signaling-Point-Code Function Support for Dual-Homed Host Function Support for Gateway Office Functions Support for IP Supermarket Function

MULTIMEDIA END OFFICE APPLICATIONS

C5 OFFICE CONFIGURATION

Achievements Implementation of On-line billing in all the exchanges of Switching Zone Islamabad in ZTE B&CC project. Testing / Commissioning of NGN expansion phase. Testing / Commissioning of Signaling gateway at NGN for IP PPC services through FIN (fix IN) Testing /Commissioning of MRS for the provision of IVRs for IP PPC services through FIN (fix IN) Improvement of ASR in national directions by the augmentation of long haul media after a detail traffic analysis. Reduction of congestion point on local as well as nation wide directions. Termination of .25 (M) IP calls per day on NGN platform.

Ongoing Issues NGN status is currently under PAT PAT of Softx 3000, UMG 8900,SG 7000 & MRS has been completed. Discrepancy list comprising of Non Service affecting & some deficient features has already been forwarded to the vendor through Dig Dev wing. Connectivity with some UMG’s is still pending due to Media/hardware unavailability at the far end (LX side). Extension of NGN NMS room is required. Several civil works need to be done.