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Telephone Systems / Grandstream

UCM6308

The Grandstream UCM6308 is an enterprise-grade IP PBX that is part of the UCM6300 series. It is designed for organizations requiring a robust, scalable system with high user and call capacity, integration of analog lines, PSTN, VoIP, video conferencing, and remote collaboration support. It delivers exceptional value by eliminating additional licensing fees while providing advanced features in security, networking, and unified communications.

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UCM6308

Main features

  • Supports up to 3,000 registered users.
  • Up to 450 concurrent calls.
  • 8 analog FXS ports (RJ11) and 8 FXO ports (RJ11).
  • Three auto-sensing Gigabit RJ45 network ports with integrated PoE+ and NAT router support.
  • 320×240 color touchscreen display with quick access and navigation bar.
  • No licensing fees for extensions or calls; Grandstream SIP devices supported via “ZeroConfig” provisioning.
  • Advanced security: secure boot, unique certificate, random default password, TLS/SRTP encryption, secure NAT traversal.
  • Supports both voice and video with modern codecs (Opus, H.264, H.265, VP8, etc.), with packet loss (jitter) tolerance of up to ~50%.

Technical specifications

Maximum Users

3000 usuarios registrados

Concurrent Calls

Hasta 450 llamadas simultáneas

FXS / FXO Ports

8 FXS y 8 FXO

Network Ports

3 puertos Gigabit RJ45, autoajustables, PoE+

Peripheral Interfaces (USB / SD)

1 USB 2.0, 1 USB 3.0, interfaz SD card

Display

Pantalla a color táctil 320×240

Telephony Operating System

Basado en Asterisk versión 16

Security

TLS/SRTP, arranque seguro, certificados, NAT firewall traversal seguro

About the brand

Grandstream Networks is a leading brand in unified communications systems, IP PBXs, IP phones, video conferencing, and VoIP solutions. It is recognized for offering high-capacity products with integrated features, avoiding heavy reliance on extra licenses, and with a strong focus on security, interoperability, and remote management. The UCM6300 series stands as one of its flagship product lines for medium and large businesses, combining voice, video, remote mobility, and collaboration in a consolidated platform.

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