Lead-to-Cash
The runtime phase that faces the customer. Lead-to-Cash runs once per order — qualify, quote, capture, decompose, activate, bill. It consumes what Concept-to-Market published and produces the installed base: the inventory records that state what this customer actually has.
- Clock
- Runtime
- Unit of work
- Per order
- Cadence
- Minutes to days
- Produces
- An installed base
The constraint on Trouble-to-Resolve
Trouble-to-Resolve can only assure what Lead-to-Cash instantiated. A service with no inventory record is a service nobody can correlate a fault to.
Decomposition is where the phase either works or does not. A product order becomes service orders, which become resource orders, and each hop is driven by catalog relationships defined at design time. Where those relationships are missing, the hop is closed by hand or hard-coded in the orchestrator, and the resulting instance has no lineage back to a specification.
L2C is where commercial truth and technical truth first diverge. Billing starts from the product order; the network knows only what was activated. If the two are never reconciled, the divergence dates from the day the order completed and grows quietly from there.
Modules in this phase
CPQ, Pricing & CLM
Commercial Configuration Engine
The vendor-neutral engine room of commercial configuration: how a product catalog becomes a priced, approvable, margin-aware, contractable quote — catalog and bundling mechanics, matrix pricing, discounting and multi-currency, margin modeling, and contract lifecycle.
Order Management (COM/SOM/ROM)
The Order Orchestration Chain
How commercial orders decompose into service orders and resource orders, with orchestration at every layer.
Multi-Domain Orchestration
Network Integration & Service Orchestration
How OSS orchestrates fulfilment across IP/MPLS, mobile core, transport, and access domains. Establishes the strict layering between COM/SOM, cross-domain orchestration, and ROM/domain controllers, and works through the integration patterns, protocols, and worked examples that turn an RFS into configured network state.
Network Inventory & Activation
Physical & Logical Resource Inventory
Managing physical and logical network resources — devices, ports, VLANs, IP addresses, and topology. How Resource Inventory feeds activation, capacity planning, and service assurance.
Billing & Revenue Management
From Usage to Cash
Rating, charging, mediation, subscription billing, interconnect & roaming, convergent billing, revenue assurance, and dunning — how telcos turn service usage into revenue.
Foundations and the reference modules — TMF Open APIs, frameworks, architecture patterns and the vendor landscape — apply across all three phases, so they are not listed under any one of them.
Hands downstream
L2C hands Trouble-to-Resolve an installed base: product, service and resource inventory records that a fault can be correlated against.
Next: T2R — Trouble-to-Resolve