Grandstream UCM6302A Audio IP PBX – Up to 500 Users, 75 Concurrent Calls

Scalable Audio IP PBX for Up to 500 Users — Grandstream UCM6302A

The Grandstream UCM6302A provides a central communications platform for businesses that brings together calling, extension management, meetings, the Wave app and remote work, with capacity for up to 500 users and 75 concurrent calls.

Why Choose the UCM6302A?

The UCM6302A delivers an on-premise UCM system without the need to build several separate systems, with call management, recording, IVR, call queues, collaboration via Wave and integration with external systems.

What Does It Offer?

• Up to 500 SIP users.


• Up to 75 concurrent G.711 calls.


• Up to 75 concurrent SRTP calls.


• 2 FXS ports and 2 FXO ports: to connect analog devices and PSTN lines directly.


• Meetings: up to 5 simultaneous public rooms with a maximum of 75 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 records.


• 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, unique certificate and SRTP/TLS/HTTPS.


• Asterisk 16 based.

Key Technical Specifications

• Model: UCM6302A


• Type: Audio IP PBX


• Users: up to 500


• Concurrent calls: up to 75


• Concurrent SRTP: up to 75


• FXS: 2


• FXO: 2


• Meetings: up to 5 rooms / 75 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 meetings, messaging and remote work.

Upgrade your organization's communications with a flexible central platform — order the Grandstream UCM6302A from Catcher.