3.2.4.5 System Non-functional Requirements (1) System Scale (A) Currently, 136 client PCs are used in 46 FIs and 25 client PCs are used in CBM offices for CBM-NET. FIs must procure their own client PCs if they need additional CBM-NET terminals. (B) The maximum number of FIs sites connecting to CBM-NET Phase 2 is 184. Each FI will connect to CBM-NET Phase 2 from a maximum of four locations. Two of them will be from the location of CBM-NET terminals and that of STP in FIs’ primary sites. The other two will be from FIs' DR sites. (C) The maximum number of each FI user is 60 for CBM-NET. Current CBM-NET registered users are approximately 1,000, including FIs users and CBM users. (2) System Operating Hour (A) CBM-NET Phase 2 has a capability to receive payment instructions all day including non-business days except system maintenance period (e.g. maximum two hours per a day). (B) With considering the system maintenance time, business hours can be extended up to 22 hours. (C) To extend the operating hour, CBM should assign operation personnel for the system monitoring during the business hours. 83