1. Biggest challenge for ICT-enabled construction in the manufacturing industry: system integration  Numerous ICT-enabled systems, difficult to collaborate and integrate Office collaboration and service integration urgently await to be achieved in a convergent office solution. ICT-enabled construction varies according to manufacturing enterprises. Take a large manufacturing company X as an example. Company X has 7 business units and 30+ branches, and each branch has an independent information system. More than 30 application systems are being used in company X. ICT-enabled system architecture in Manufacturing company Business intelligence, decision making, operation analysis… Sales, procurement, logistics, finance, HR, collaborative platform, e-commerce, investment and risk… Production, quality, cost, device, energy… Operation planning, warehouse management, delivery… Process control, operation model, process monitoring… Programmable logic control, closed loop controller… Sensors and Actuators ， Switch, meter, probe… Strategic control Integrated operation Manufacturing MGMT Manufacturing Execution Process control Basic automation Sensor & Actuator ICT-enabled system architecture in Manufacturing company

2. PSTN ① Small distributed core voice gateway Enterprise-grade core voice gateways are responsible for cross-region scheduling and call control, and are deployed in a distributed manner to enable network-wide multi-service planning and ONLY. ① Small distributed core voice gateway Enterprise-grade core voice gateways are responsible for cross-region scheduling and call control, and are deployed in a distributed manner to enable network-wide multi-service planning and ONLY. ④ eSDK customization component Communication and service systems are integrated to offer a unified user interface for all services and ensure consistent customer experience among diverse terminals and systems. ④ eSDK customization component Communication and service systems are integrated to offer a unified user interface for all services and ensure consistent customer experience among diverse terminals and systems. Portal APP ② IP and TDM compatibility Huawei U19/29 series IP PBXs are used to support No.7 signaling (not supported by Cisco devices) and interoperate with legacy PBXs, enabling smooth evolution from the TDM system to the IP voice system and maximizing customer investments. ② IP and TDM compatibility Huawei U19/29 series IP PBXs are used to support No.7 signaling (not supported by Cisco devices) and interoperate with legacy PBXs, enabling smooth evolution from the TDM system to the IP voice system and maximizing customer investments. ERPMESHRM E6000 (UC Server) E1 E6000 (eSDK Server) GE Policy center （ including MDM ） GE Internet DMZ GE ③ eSDK business middleware The eSDK server is deployed in the equipment room to offer the interfaces for the following functions to business systems: UC service invoking, authentication, message push, electronic name card, and personal settings. ③ eSDK business middleware The eSDK server is deployed in the equipment room to offer the interfaces for the following functions to business systems: UC service invoking, authentication, message push, electronic name card, and personal settings. MicroDC Overall solution architecture: bearing office collaboration with one network and integrating service experience with eSDK Internet Data equipment room (voice-centric HQ): 130,000 users PSTN Business system CAPORTALOA WAN SVN5000 USG5500 GE U2990 Regional office: 300 users Branch: 10,000 users E1 U1930 FE IP Phone IAD FXS FAXAnalog phone FE PSTN GE U1980 IP PhoneFAXAnalog phone Terminal system FXS Local DC E1 GE Analog Switch （ 3rd ）

3. Collaboration difficulty and operation complexity One employee has 6+ contact numbers that are mutually isolated and difficult to remember. Users have to dial different contact numbers and find the appropriate one when calling an employee who is out of the office. The communication means are mutually separated: user interfaces are inconsistent and functions are not interoperable. Different communication means demand different systems, contact numbers, and operation processes.  Difficult to use the isolated communication means  Difficult to reach the person in a timely manner Company X has 6+ communication means, involving communication systems from diverse vendors. VoIP Fixed- line phone Software terminal Email During a video conference 4+ numbers for each communication attempt Complex Mobile phone

4. Service requirements: bearing voice services for 100,000+ employees on 20+ campuses; ONLY Small distributed core voice gateway, bearing diverse services with one network and enabling ONLY Personal setting HQ PLMN/ PSTN Bound fixed- line phone Bound mobile phone Office phone Voice call Portal Branch GE U1980 External call Desktop computer GE FE Data equipment room E6000 CALL AS (UC server) U2990 Portal GE E6000 (eSDK server) GE VPN GE 10GE PLMN/PSTN Information setting Command setting The U2990 core voice gateway is responsible for cross-region scheduling. The Call AS is enabled to enable centralized control and network-wide planning. Automatic phone linkage (U2990) Support for a maximum of 300,000 users, the largest capacity in the industry Instant messaging, voice call, and multimedia conferencing Displaying user contact numbers as one number (ONLY)  Centralized deployment, flexible settings, and phone linkage  Large capacity, diverse services, and ONLY

5. Device complexity resulting in frequent disconnections and high investment costs  Difficult to reuse legacy devices Devices from diverse vendors, such as NEC, Siemens, and Cisco Complex devices and numerous interface models  Difficult to integrate dispersed telephone systems Inconsistent number rules and difficult to recognize long and short numbers. High maintenance costs: the maintenance of different systems requiring different professional personnel 130,000 analog phones, multi-vendor devices, and isolated telephone systems Status quo: Two networks, resulting in a tremendous waste in O&M and investment Adding an IP service system that accommodates 130,000 users Costs: Retaining the legacy analog phone system that accommodates 130,000 users Conflict: Company X wants to deploy a convergent conferencing and collaborative office system, but legacy systems cannot interoperate with the new system. Fax Analog phone Branch HQ Branch

6. IP and TDM compatibility, maximizing customer investments Service requirements: smoothly evolving the legacy TDM network to an IP network and making full use of existing devices U1980 supports unified analog and IP access as well as hybrid networking. Core gateway U2990 interconnects regional voice systems. A single U2990 supports up to 180,000 busy hour completed calls (BHCCs) and cascaded U2990s can serve 130,000 to 300,000 users. Huawei gateways comply with diverse signaling types to interwork with devices from NEC and Siemens. However, Avaya and Cisco do not support No. 7 signaling or hybrid networking of analog and IP systems. A maximum of 224 integrated access devices (IADs) are supported, facilitating the access of analog phone users. A single Cisco gateway supports 24 devices at most. U1980 SS7/E1 Analog switch (Siemens) Branch Users: < 10,000 IAD1224 U1980 Branch Users: < 10,000 HQ U2990 Analog switch (NEC) PRI/E1 SIP/IP PSTN N*E1 PSTN IP network SIP/IP N*E1 IP phone Cross-region call BHCC:180K Reconstruction of old branches U19XX local gateways can be mounted to legacy switches, enabling the analog-to-IP smooth evolution. Core voice gateway U2990: voice service logic control for 130,000+ users New branch U19XX local gateways comply with IP phones and IADs support the access of analog phones. GE FE

7. Purchase process: SRMERPOTM 1 service process, 4 systems, and 4 account and password inputs So tedious! PDM RequestInquiryContractArrival tracking ThenChallenge 5 systems 30+ systems Independent, one-to-one process Crossing 4 to 5 systems, one-to-many processes Switch frequency for 10 services every day: 10 Switch frequency for 100+ services every day: 1000+ The more systems, the more complex the processes are. Single sign-on (SSO) is urgently demanded to improve work efficiency.  Difficult to remember accounts and passwords Each system has its own accounts and passwords that are difficult to remember.  Complexity in switching systems Users have to switch between multiple systems and enter the accounts and passwords when processing a single service. Inconsistent accounts and passwords, resulting in operation complexity

8. Supporting SSO for multiple services with eSDK service middleware Data equipment room Service requirements: able to access all enterprise applications only after one-time password input Storage OA ERP MES HRM Portal GE Service systems E6000 (UC server) U2990 GE E6000 (eSDK server) GE CA certification center GE Office portal Mobile MES Mobile ERP Desktop computer Mobile phone Tablet FE GE VPN GE HQ building Portal APP GE ① ② ③ ④ ① Client login: ① A UC client requests authentication. ②③ The UC platform delegates the CA center to perform authentication. ④ The UC server sends a token to the client. ② ③ Service system login: ① A service system sends a token to the CA center. ② The CA center sends the result to the service system. ③ The service system sends the result to the client.  Delegated authentication and SSO UC clients obtain CA tokens using the eSDK server. Service applications authenticate the tokens. The eSDK server provides interfaces for obtaining client token COMs. The eSDK server provides interfaces for delegated CA authentication. SSO is enabled for service systems through the UC eSDK.