The de la Phone Billing Management System (BMS) is a multi-tier and multi-agent billing management platform that's built on the de la Phone billing processing engine for use in various IP telephony services. The BMS provides account and tariff management, payment registry, series management, call record reporting and other admin services.

The core billing engine of the de la Phone billing system is based on the SIP protocol but can be customized to work with any AAA compliant IP telephony system.

The BMS takes full advantage of the flexibility and versatility of the switching platform to provide billing services for a variety of IP telephony devices supporting the main VoIP protocols in the market today. Some of the features that the BMS provides include account activation and tracking, service feature selection, selection of billing rates for specific calls, invoice creation, payment entry and management of various sales and CDR reports for agents and resellers.