# Resources

Insights, guides, and product updates from the BlueRockTEL team.

## [Leasing and Third-Party Payer Management for Telecom and Office Equipment](/content/en/resources/2026-02-21-leasing-and-third-party-payer-management/index.html)
Leasing creates a three-party billing problem. BlueRockTEL handles the full workflow natively: quote, invoice, and delivery note from one folder.

## [Billing the French Public Sector: How BlueRockTEL Handles Chorus Pro Compliance](/content/en/resources/2026-02-05-chorus-pro-invoicing-for-public-sector-telecom/index.html)
Chorus Pro compliance blocks many operators from the public sector. BlueRockTEL generates the required XML invoices natively: no manual conversion.

## [Multi-Batch Billing: How Telecom Operators Manage Diverse Service Portfolios](/content/en/resources/2026-01-20-multi-batch-billing-for-diverse-service-portfolios/index.html)
Most billing platforms force a single cycle for all services. Multi-batch billing lets telecom operators bill each category on its own schedule.

## [How SEPA Direct Debit Automation Transformed Our Clients' Cash Flow](/content/en/resources/2026-01-10-sepa-automation/index.html)
Late payments cripple telecom operator cash flow. SEPA Direct Debit automation in BlueRockTEL cuts DSO by 20-35 days with zero manual follow-up.

## [CDR-Based Billing Explained: From Phone Call to Invoice Line](/content/en/resources/2025-11-15-cdr-billing-explained/index.html)
Every phone call generates a Call Detail Record. Here's how a billing engine transforms millions of those records into an accurate invoice: automatically.

## [What is a BSS and why does your telecom business need one?](/content/en/resources/2025-09-01-what-is-a-bss/index.html)
A Business Support System is the operational backbone of any modern telecom operator. Here's what it covers and why you can't scale without one.

## [Adding a Visual Banner to Your Invoices](/content/en/resources/2024-02-01-adding-visuals-to-invoices/index.html)
BlueRockTEL makes it easy to add a visual banner to your invoices: ideal for promoting a service or sending a seasonal message to all your customers at once.

## [Save Time and Never Miss Anything with BlueRockTEL Bundles](/content/en/resources/2024-01-15-bluerocktel-bundles/index.html)
BlueRockTEL bundles let you group the articles you commonly sell together. One click to create a complete billing record: without forgetting a thing.

## [Streamline Your Operations with BlueRockTEL Installation Templates](/content/en/resources/2023-11-01-installation-templates/index.html)
BlueRockTEL installation templates are operational blueprints that standardise your customer deployment process: from signature through to billing activation.

## [What is a CDR File in Telecom? Definition, Explanation and Uses](/content/en/resources/2023-10-01-what-is-a-cdr-file/index.html)
The CDR file is at the heart of every telecom billing operation. Here is what it contains, how it works, and how a solution like BlueRockTEL uses it to bill your customers.

## [Multi-Batch Billing with BlueRockTEL](/content/en/resources/2023-09-01-multi-batch-billing/index.html)
By default, BlueRockTEL bills all your active records in a single monthly run. But some operators need multiple billing batches per month. Here is how it works.

## [Choosing a Complete and Reliable Telecom Billing Solution](/content/en/resources/2023-08-08-choosing-a-telecom-billing-solution/index.html)
Choosing the right telecom billing solution is a strategic decision. Here are the essential criteria to evaluate and why BlueRockTEL meets those requirements.

## [Billing Operations with BlueRockTEL](/content/en/resources/2023-07-01-billing-operations/index.html)
BlueRockTEL offers two billing modes: pre-production to verify your data before sending, and production to generate and deliver real invoices. Here is how to use them.

## [BlueRockTEL API: Example Usage with the 3CX Call Flow Designer](/content/en/resources/2023-06-12-bluerocktel-api-3cx-call-flow-designer/index.html)
BlueRockTEL exposes an API that enables real-time customer identification. Here are some useful routes, illustrated by their use with the 3CX Call Flow Designer.

## [Document Management in BlueRockTEL](/content/en/resources/2023-06-12-document-management/index.html)
BlueRockTEL lets you attach documents directly to customer records, with automatic synchronisation to your FTP space. Here is how it works.

## [Viewing the BlueRockTEL Client Portal as Your Customer Sees It](/content/en/resources/2023-06-12-viewing-the-client-portal/index.html)
Need to check what your customer sees in their online portal? BlueRockTEL's impersonation feature lets you access their account securely and instantly.