Grandstream UCM6302A

Here’s a detailed overview of the Grandstream UCM6302A IP PBX (audio-only) model:

   Highlights & Core Specs

• Capacity: Supports up to 500 SIP users and 75 concurrent calls (including SRTP) 

• Conference Bridge: Up to 5 rooms with a total of 75 participants 

• Analog Ports:

  • 2 FXS for analog phones/fax (lifeline support)

  • 2 FXO for PSTN backup lines 

• Network & Connectivity:

  • 3× Gigabit Ethernet ports with PoE+ (can act as router or switch)

  • 1× USB 2.0 + 1× USB 3.0, plus SD card slot for local recording/storage

  • Front-side 320×240 color touch LCD for management 

• Hardware:

  • 4-core processor, 1 GB RAM, 32 GB flash storage

  • Operates on Asterisk 16 

• Security & Redundancy:

  • Secure boot, unique certificates, random default passwords

  • Supports SRTP/TLS/HTTPS

  • UCM RemoteConnect for secure remote work; Hot-Standby HA supported

  • GDMS cloud provisioning/management