Telecom

BSS/OSS to Core Network Integration Diagram

sequenceDiagram
    participant U as User
    participant BSS as BSS (Billing/CRM)
    participant OSS as OSS (Provisioning)
    participant HLR as HLR (Database)
    participant NET as Network (Towers)

    U->>BSS: Buys SIM & Plan
    BSS->>OSS: Create Subscriber Account
    OSS->>HLR: Provision IMSI & MSISDN Using MML(Man Machine Language)
    U->>NET: Powers on Phone
    NET->>HLR: Is this SIM valid?
    HLR-->>NET: Yes, allow connection
    NET-->>U: Connected to Network