Grandstream UCM6300A Audio IP PBX – Up to 250 Users, 50 Concurrent Calls

A Scalable Audio IP PBX for Up to 250 Users — Grandstream UCM6300A

The Grandstream UCM6300A is a centralized business communications platform that brings together calling, extension management, meetings, the Wave app and remote work, with capacity for up to 250 users and 50 concurrent calls.

Why Choose the UCM6300A?

The UCM6300A provides an on-premises UCM system without the need to build several separate systems, offering call management, recording, IVR, call queues, collaboration via Wave and integration with external systems.

What Does It Offer?

• Up to 250 SIP users.


• Up to 50 concurrent G.711 calls.


• Up to 50 concurrent SRTP calls.


• No built-in FXS/FXO ports: external analog gateways can be added when needed.


• Meetings: up to 3 simultaneous public rooms with a maximum of 50 participants in total.


• Wave: for calls, messaging and meetings from desktop, web and mobile.


• Advanced call management: IVR, call queues, ring groups, recording, voicemail, routes and CDR logs.


• 3 Gigabit Ethernet ports: with PoE+ and NAT Router support.


• GDMS and UCM RemoteConnect: for management and remote access.


• API: for integration with CRM, PMS and business platforms.


• Enterprise-grade security: Secure Boot, a unique certificate and SRTP/TLS/HTTPS.


• Asterisk 16 based.

Key Technical Specifications

• Model: UCM6300A


• Type: Audio IP PBX


• Users: up to 250


• Concurrent calls: up to 50


• Concurrent SRTP: up to 50


• FXS: 0


• FXO: 0


• Meetings: up to 3 rooms / 50 participants


• Network: 3 × Gigabit Ethernet with PoE+


• Management: GDMS + Web UI


• Remote access: Wave + UCM RemoteConnect

Best Suited For

Businesses focused on voice communications, audio conferencing, messaging and remote work.

Upgrade your organization's communications with a flexible centralized platform — order the Grandstream UCM6300A from Catcher.