Practical notes on prepaid voice
Practical notes on running and migrating prepaid voice and calling-card platforms: real-time rating, hard cut-off enforcement, and the operational detail behind operator cutovers.
Running and migrating a prepaid platform
Migration thinking, product mapping, dry-run discipline, and the operational details behind prepaid voice and calling-card cutovers.
Good revenue, hidden risk: the calling card operator's ticking clock
Many calling card operators are still making real money. The problem is the legacy on-prem platform underneath it, accumulating risk that the revenue hides.
The cost of doing nothing: legacy on-prem platforms keep getting riskier
Unpatched servers, firewall sprawl, departing knowledge, and compounding data drift make the risk of staying put larger every year — not smaller.
A pre-migration checklist for prepaid voice operators
The discovery questions to settle before choosing a platform — rate-deck formats, PIN inventory, CDR retention, IVR behaviour, switch dependencies — and how to run a zero-downtime cutover.
Migrating off Digitalk: what actually breaks
Where replacing a legacy platform gets stuck — rate tables, PIN and account data, IVR logic, CDR history, integration cutover — and the phased control process that de-risks it.
Why post-paid billing logic fails for prepaid voice
Post-paid systems rate calls after the fact. Prepaid voice needs the cut-off decision inside the live call, and that changes everything.
Per-second vs per-minute billing: what it costs you
How billing increments, minimum charges, and connection fees quietly shape margin and customer trust on calling cards.
What a hard cut-off actually requires
Ending a live call at zero balance takes real-time reservation, concurrency handling, a latency budget, and switch signalling.
Five ways prepaid calling leaks revenue
Overspend, stolen PINs, rate-deck gaps, rounding, and negative balances: the five common prepaid revenue leaks and how to close them.
Containing PIN fraud on calling cards
PINs are bearer credentials. Velocity limits, concurrency caps, balance ceilings, and real-time cut-off keep fraud exposure bounded.
Running a multi-brand calling-card operation from one platform
Run several card brands, resellers, dealers, and callshops on one platform with separate pricing, margins, balances, and consolidated reporting.
A-Z rate decks without the spreadsheet chaos
Longest-prefix matching, zones, increments, time windows, and versioning: managing A-Z rating without spreadsheet drift.
Integrating prepaid control into your softswitch
How real-time prepaid authorisation, live rating, and forced teardown fit alongside a SIP and softswitch environment.