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======Process of Integrating SSG into the Operator's Network======
=====Step 1. Server Preparation=====
**Client Responsibilities:**
  - Prepare the server according to the [[en:dpi:dpi_brief:dpi_requirements|requirements]].
  - Provide servers with VEOS installed. Pay attention to the [[en:veos:installation#pre-configuring_veos|preliminary VEOS configuration]].
  - Provide access. Two options are available:
    - Send login and password for SSH.
    - Use a ready-made script to add servers to Teleport.

**VAS Experts Responsibilities:**
  - Connect to the servers via SSH.
  - Add servers to Teleport.

=====Step 2. Component Installation=====
The installation depends on the functionality being used.

**VAS Experts Responsibilities:**
  - SSG:
    - Install SSG on the server.
  - GUI (if required):
    - Install GUI on a separate server. If necessary (e.g., in test environments), the GUI can be installed on the same server as SSG.
  - QoE (for DPI functionality):
    - Prepare a separate server for QoE.
    - Install QoE.

=====Step 3. Component Configuration=====
The configuration depends on the functionality being used.

**Client Responsibilities:**

For NAT:
  - Complete the questionnaire provided by the VAS Experts manager.
  - Provide a pool of public IP addresses.
  - Specify which private networks need to be connected to the CG-NAT service.
  - Provide a receiver for exporting NAT events (if using a third-party solution).

For BRAS:
  - Configure the RADIUS server using the provided attribute dictionary.
  - Provide information about the type of BRAS (L2 or L3) and the authentication method.
  - Configure billing logic.

**VAS Experts Responsibilities:**

For DPI:
  - Configure the interaction between modules (DPI, GUI, QoE).

For NAT:
  - Assign public IP addresses in SSG.
  - Configure the export of NAT events. Two options are available:
    - To the client receiver.
    - Use the VAS Expert solution — QoE with NAT Flow functionality.

For BRAS:
  - Configure SSG based on the type of BRAS (L2 or L3).
  - Collaborate with the client on necessary attributes in the RADIUS server response.
  - Debug and test business cases (e.g., blocking, Captive Portal, financial blocking).

=====Step 4. Integration and Testing=====
**Client Responsibilities:**
  - Prepare a portion of traffic or a list of test subscribers for verification.

**VAS Experts Responsibilities:**
  - Integrate SSG with a portion of real traffic or subscribers.
  - Test the system's functionality.
  - Address any identified issues.

=====Step 5. Transition to Operation=====
**Client Responsibilities:**
  - Confirm that the system operates according to the requirements.

**VAS Experts Responsibilities:**
  - Finalize the configuration and transfer the system into operation.
  - Provide support during the implementation phase.