Grandstream PBX Doha is an in-house telephone system that doesn't charge for licenses, upgrades, or individual features. Small and medium-sized organizations should use the UCM6100 series since it supports up to 500 users, while SMEs should use the UCM6510 because it supports up to 2000 users. The Grandstream UCM IP PBX series provides a comprehensive array of unified communication functions in an on-premises system that is simple to administer and doesn't require any additional payments for upgrades or licensing.

Grandstream PBX SYSTEM offers unified messaging, IVR, call recording, meet-me and video, presence, IM, and mobility functions without the need for additional hardware. It also includes built-in voicemail at no additional cost. With great licence-free features.