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Small black metal box with front status lights and rear ports

Grandstream

Grandstream UCM6302A IP-PBX conferencing device, 2 FXO 2 FXS

SKU CH-G997-CRFC4 MPN UCM6302A

IP-PBX handling 500 users and 75 concurrent calls with built-in audio conferencing and IM

  • Supports 500 users for scalable business communication
  • Handles 75 concurrent calls for reliable voice capacity
  • Zero-config provisioning simplifies Grandstream SIP endpoint setup
  • Built-in IM, audio conferencing and web meetings unify collaboration
  • Free Wave App enables voice and IM on desktop and mobile

Scalable IP-PBX for growing businesses

The Grandstream UCM6302A is an on-premise IP-PBX that supports up to 500 users and 75 concurrent calls. It unifies voice, instant messaging, audio conferencing and web meetings in a single appliance. Zero-configuration provisioning simplifies deployment of Grandstream SIP endpoints across the organisation.

Practical limits of the FXO and FXS interface

Two FXO ports connect the system to the public switched telephone network, so only two simultaneous external calls can use traditional lines. Two FXS ports allow up to two analogue devices such as fax machines or legacy phones. Additional external connectivity requires SIP trunks or a gateway with more ports.

Capacity and headroom for users and calls

The platform handles 500 registered users and 75 simultaneous calls, which suits small to mid-sized offices with moderate traffic. Built-in IM, audio conferencing and the free Wave app extend collaboration to desktop and mobile clients. Organisations expecting more than 500 users or 75 concurrent sessions will need a higher-capacity model.

Highlights

  • Supports 500 users for scalable business communication
  • Handles 75 concurrent calls for reliable voice capacity
  • Zero-config provisioning simplifies Grandstream SIP endpoint setup
  • Built-in IM, audio conferencing and web meetings unify collaboration
  • Free Wave App enables voice and IM on desktop and mobile

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 500-user model or the 1500-user model for my office?

The UCM6302A supports up to 500 users and 75 concurrent calls. The 1500-user figure applies to the wider UCM6300 Audio series, not this specific model.

What does the 75 concurrent calls figure mean for daily use?

It means the system can handle 75 simultaneous audio conversations across SIP trunks, endpoints, and conference bridges without blocking new calls.

How do the three Gigabit RJ45 ports with PoE+ affect network deployment?

They provide LAN, WAN, and DMZ connectivity with power-over-ethernet for attached devices, simplifying cabling for IP phones and access points.

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