Grandstream UCM6302A IP PBXs

The Grandstream UCM6302A is an on-premise audio-only IP PBX designed for medium-sized organizations. As part of the UCM6300 Audio Series, it integrates voice, instant messaging (IM), audio conferencing, and remote collaboration—all managed through the free Wave app. It supports hybrid deployment using UCM RemoteConnect and cloud provisioning via GDMS, combining local control with remote access and management

Grandstream UCM6302A IP PBXs Specifications

• Users & Call Capacity

  • Supports up to 500 registered users

  • Handles up to 75 concurrent calls

  • 5 conference rooms with up to 75 participants total

• Analog & Digital Interfaces

  • 2 FXS ports (for analog phones)

  • 2 FXO ports (for PSTN lines)

  • Lifeline support for power failure fallback

• Network & Connectivity

  • 3 Gigabit Ethernet ports (switch/router modes)

  • USB 2.0 and USB 3.0 ports

  • SD card slot for storage and backup

  • Built-in NAT router and firewall

  • Supports VPN, DHCP, DNS, STUN, IPv6

• Audio Codecs & Voice Quality

  • Supports Opus, G.711, G.722, G.729, G.723, iLBC, GSM

  • T.38 fax support

  • Echo cancellation, packet loss concealment, and jitter buffer

• Power & Build

  • Powered by 12V DC, compatible with 100–240V AC input

  • PoE+ support on one Ethernet port

  • Quad-core processor with 1 GB RAM and 32 GB internal storage

  • Operating temperature: 0°C to 45°C

  • Dimensions: 270 x 175 x 36 mm

  • Weight: approximately 725 g

• Security & Compliance

  • Secure boot, strong default passwords

  • TLS, HTTPS, SRTP, SSH encryption protocols

  • Complies with FCC, CE, IC, and RCM standards