Telephony Session Engine (TelephonyDbContext)

The TelephonyDbContext data layer is decoupled from standard administrative workflows to serve high-frequency hardware integration loops. This schema tracks live Dinstar SIM Banks, multi-port GSM routing gateways, and persistent voice session state matrices.

Session Persistence Engine Map

The flowchart below maps out the continuous operational loop syncing hardware state arrays into relational storage tables:

graph TD
    %% Source Racks
    subgraph RackTier["Physical Telecom Infrastructure"]
        Rack_Sim["Dinstar Hardware SIM Array"]
        Rack_Gsm["Multi-Port Outbound Gateway"]
    end

    %% Sync Services
    subgraph ServiceTier["Background Operational Services"]
        Worker_Sync["GatewayStatusBackgroundService.cs<br/>(Hardware Heartbeat Engine)"]
    end

    %% Storage Ledgers
    subgraph StorageTier["Telephony Storage Ledgers"]
        T_Pool[("GatewayPools Table<br/>(Weighted Outbound Lists)")]
        T_Sim[("SimProfiles Table<br/>(Port Status & Identity Ledgers)")]
        T_Event[("SessionEvents Table<br/>(Raw Streaming JSON Payloads)")]
    end

    %% Flow links
    Rack_Sim <-->|"Continuous Heartbeats"| Worker_Sync
    Rack_Gsm <-->|"Continuous Heartbeats"| Worker_Sync
    
    Worker_Sync ==>|"Update Load Weights"| T_Pool
    Worker_Sync ==>|"Update Port Conditions"| T_Sim
    Worker_Sync ==>|"Flush Session Buffers"| T_Event

    %% Premium Aesthetics
    classDef rackToken fill:#0f172a,stroke:#38bdf8,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef svcToken fill:#1e293b,stroke:#a855f7,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef dbToken fill:#312e81,stroke:#ec4899,stroke-width:2px,color:#fff,rx:6px,ry:6px;

    class RackTier,Rack_Sim,Rack_Gsm rackToken;
    class ServiceTier,Worker_Sync svcToken;
    class StorageTier,T_Pool,T_Sim,T_Event dbToken;

Structural Engine Properties

1. Optimized Lock Management

Because operational telemetry writes to TelephonyDbContext every second, entity models configure specific index structures to prevent long-term table locking.

2. Live Session Contexting

Voice handlers querying active line records execute transactions over read-only scopes (AsNoTracking), avoiding Entity Framework change-tracker memory bloat.

# Telephony Session Engine (TelephonyDbContext)

The **TelephonyDbContext** data layer is decoupled from standard administrative workflows to serve high-frequency hardware integration loops. This schema tracks live **Dinstar SIM Banks**, multi-port GSM routing gateways, and persistent voice session state matrices.

---

## Session Persistence Engine Map

The flowchart below maps out the continuous operational loop syncing hardware state arrays into relational storage tables:

```mermaid
graph TD
    %% Source Racks
    subgraph RackTier["Physical Telecom Infrastructure"]
        Rack_Sim["Dinstar Hardware SIM Array"]
        Rack_Gsm["Multi-Port Outbound Gateway"]
    end

%% Sync Services
    subgraph ServiceTier["Background Operational Services"]
        Worker_Sync["GatewayStatusBackgroundService.cs<br/>(Hardware Heartbeat Engine)"]
    end

%% Storage Ledgers
    subgraph StorageTier["Telephony Storage Ledgers"]
        T_Pool[("GatewayPools Table<br/>(Weighted Outbound Lists)")]
        T_Sim[("SimProfiles Table<br/>(Port Status & Identity Ledgers)")]
        T_Event[("SessionEvents Table<br/>(Raw Streaming JSON Payloads)")]
    end

%% Premium Aesthetics
    classDef rackToken fill:#0f172a,stroke:#38bdf8,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef svcToken fill:#1e293b,stroke:#a855f7,stroke-width:2px,color:#fff,rx:6px,ry:6px;
    classDef dbToken fill:#312e81,stroke:#ec4899,stroke-width:2px,color:#fff,rx:6px,ry:6px;

class RackTier,Rack_Sim,Rack_Gsm rackToken;
    class ServiceTier,Worker_Sync svcToken;
    class StorageTier,T_Pool,T_Sim,T_Event dbToken;
```

---

## Structural Engine Properties

### 1. Optimized Lock Management
Because operational telemetry writes to `TelephonyDbContext` every second, entity models configure specific index structures to prevent long-term table locking.

### 2. Live Session Contexting
Voice handlers querying active line records execute transactions over read-only scopes (`AsNoTracking`), avoiding Entity Framework change-tracker memory bloat.