BSS/OSS Academy
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Section 2.4

Worked Example: Connectivity Service

A complete worked example showing how a broadband product decomposes through all catalog layers.

This section walks through a complete, realistic example of how a residential broadband product decomposes through every catalog layer — from the Product Offering displayed in the online shop, all the way down to the physical resources on the network. This ties together every concept from Module 2.

Follow the Chain
Pay attention to how each layer references the layer below it. This decomposition chain is exactly what the fulfilment system traverses when activating a new service. If you can follow this example, you understand catalog-driven architecture.

Product Offering

BSS
SuperFibre 200 Home

Product Offering

Product Specification

BSS
Residential Broadband Access

Product Specification

Customer-Facing Services

OSS
Internet Access

CFS

WiFi Mgmt

CFS

CPE Mgmt

CFS

Internet Access → GPON-Bearer, VLAN-Service, IP-Profile, QoS-Profile

CPE Mgmt → TR069-Config

Resource-Facing Services

OSS
GPON-Bearer

RFS

VLAN-Service

RFS

IP-Profile

RFS

QoS-Profile

RFS

TR069-Config

RFS

Resources

OSS
OLT Port

Resource

VLAN ID

Resource

IP Address

Resource

BW Policy

Resource

ACS Endpoint

Resource

Each RFS maps 1 : 1 to its Resource
Figure 2.6 — Complete decomposition of "SuperFibre 200 Home" from offering to resources

Layer 1: Product Offering

BSS
Product Offering: SuperFibre 200 Home
This is what the customer sees and buys: SuperFibre 200 Home at $89/month on a 24-month contract. Available online, in-store, and via telesales. Includes 200Mbps internet, WiFi app, and a router.
1 / 5

The Complete Picture

Stepping back, here is what happened when the customer clicked "Order Now" on "SuperFibre 200 Home":

End-to-End Fulfilment Flow

1
Commercial Order Captured
BSS

COM creates a Product Order for "SuperFibre 200 Home" with selected options (router model, no static IP). Product Inventory creates a pending Product Instance.

2
Product → CFS Decomposition
BSS → OSS

The catalog maps the Product Specification to 3 CFS types. SOM creates Service Orders for Internet Access, WiFi Management, and CPE Management.

3
CFS → RFS Decomposition
OSS — SOM

The service catalog decomposes each CFS into RFS. Access technology = GPON determines the specific RFS set. 7 RFS instances are created.

4
Resource Allocation
OSS — ROM

ROM allocates resources from inventory: OLT port, VLAN, IP addresses, bandwidth policy. Each resource is reserved for this service.

5
Network Activation
OSS — Network

ROM drives configuration to the network: OLT port configured, VLAN created, DHCP updated, QoS policy applied, ONT configured via TR-069.

6
Service Activation Complete
OSS → BSS

SLM marks all CFS instances as Active. Product Inventory marks the Product Instance as Active. Customer receives confirmation.

Key Takeaways

  • A single product offering ("SuperFibre 200 Home") decomposes into 3 CFS, 5 RFS, and 5 resources
  • Each layer adds more technical specificity while the layer above stays technology-neutral
  • The catalog defines all decomposition rules — fulfilment systems execute them at order time
  • Resource allocation (finding free ports, VLANs, IPs) happens at the bottom of the chain
  • The full chain is traceable: any resource can be traced back to the product that requires it