SIM Lifecycle State Arrays

To track active cellular modems reliably, the database layer records hardware status properties for physical subscriber identity modules. Asterisk 2 tracks SIM operational cycles inside TelephonyDbContext to automate hardware line rotation safely.

SIM State Representation Matrix

The layout below illustrates how hardware port properties track active registration networks and hardware error boundaries:

graph TD
    %% Hardware SIM
    subgraph SimModel["SIM Profile Class"]
        SimEntity["SimProfile Entity<br/>(PK: SimId, IMSI: 40445...)"]
    end

    %% Operational States
    subgraph StateLedger["Persistent Port Variables"]
        FieldPort["PhysicalPort String<br/>(Rack Slot Map: '3-12')"]
        FieldStatus["PortStatus Indicator<br/>(Values: Idle, Busy, Failed)"]
        FieldFails["FailureCount Counter<br/>(Triggers Alert when &gt; 3)"]
    end

    %% Routing
    subgraph ActionTier["Automated System Actions"]
        ActionActive["Assign Outbound Session"]
        ActionLock["Lock Port Channel"]
        ActionAlert["Flag for Hardware Swap"]
    end

    %% Relations
    SimEntity ==>|"Maps Fields"| FieldPort
    SimEntity ==>|"Maps Fields"| FieldStatus
    SimEntity ==>|"Maps Fields"| FieldFails
    
    FieldStatus -->|"Status == Idle"| ActionActive
    FieldStatus -->|"Status == Busy"| ActionLock
    FieldFails ==>|"FailureCount &gt; 3"| ActionAlert

    %% Rich Aesthetic Theme
    classDef simToken fill:#0f172a,stroke:#38bdf8,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef ledgerToken fill:#1e293b,stroke:#a855f7,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef actToken fill:#312e81,stroke:#ec4899,stroke-width:2px,color:#fff,rx:6px,ry:6px;

    class SimModel,SimEntity simToken;
    class StateLedger,FieldPort,FieldStatus,FieldFails ledgerToken;
    class ActionTier,ActionActive,ActionLock,ActionAlert actToken;

Schema Tracking Directives

1. Real-Time Hardware Handshaking

Line status variables record ongoing background service updates continuously. Changes update database rows directly to reflect active port states:

Idle: SIM is connected to external carriers and available for immediate task assignments.
Busy: Active audio channel call in progress. Line locked to prevent mixing signals.
Failed: Hardware network drop detected. Port excluded from outbound routing selection pools.

# SIM Lifecycle State Arrays

To track active cellular modems reliably, the database layer records hardware status properties for physical subscriber identity modules. **Asterisk 2** tracks SIM operational cycles inside `TelephonyDbContext` to automate hardware line rotation safely.

---

## SIM State Representation Matrix

The layout below illustrates how hardware port properties track active registration networks and hardware error boundaries:

```mermaid
graph TD
    %% Hardware SIM
    subgraph SimModel["SIM Profile Class"]
        SimEntity["SimProfile Entity<br/>(PK: SimId, IMSI: 40445...)"]
    end

%% Operational States
    subgraph StateLedger["Persistent Port Variables"]
        FieldPort["PhysicalPort String<br/>(Rack Slot Map: '3-12')"]
        FieldStatus["PortStatus Indicator<br/>(Values: Idle, Busy, Failed)"]
        FieldFails["FailureCount Counter<br/>(Triggers Alert when &gt; 3)"]
    end

%% Routing
    subgraph ActionTier["Automated System Actions"]
        ActionActive["Assign Outbound Session"]
        ActionLock["Lock Port Channel"]
        ActionAlert["Flag for Hardware Swap"]
    end

%% Rich Aesthetic Theme
    classDef simToken fill:#0f172a,stroke:#38bdf8,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef ledgerToken fill:#1e293b,stroke:#a855f7,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef actToken fill:#312e81,stroke:#ec4899,stroke-width:2px,color:#fff,rx:6px,ry:6px;

class SimModel,SimEntity simToken;
    class StateLedger,FieldPort,FieldStatus,FieldFails ledgerToken;
    class ActionTier,ActionActive,ActionLock,ActionAlert actToken;
```

---

## Schema Tracking Directives

### 1. Real-Time Hardware Handshaking
Line status variables record ongoing background service updates continuously. Changes update database rows directly to reflect active port states:
- **`Idle`**: SIM is connected to external carriers and available for immediate task assignments.
- **`Busy`**: Active audio channel call in progress. Line locked to prevent mixing signals.
- **`Failed`**: Hardware network drop detected. Port excluded from outbound routing selection pools.