Grandstream UCM6300A IP PBX (Audio Only) | Up to 250 Users, 50 Calls, 3 Audio Meetings

The Grandstream UCM6300A IP PBX (Audio Only) is a powerful and secure unified communication solution designed for businesses that require high-performance voice collaboration without video conferencing. Supporting up to 250 users and 50 concurrent calls, the UCM6300A offers enterprise-grade audio, reliability, and control — all without subscription fees.

Key Specifications:

• Model: UCM6300A (Audio Only)
• Brand: Grandstream
• Users Supported: Up to 250
• Concurrent Calls: Up to 50
• Audio Conference Rooms: 3
• Networking Interfaces:
  • 2 × Gigabit Ethernet ports (PoE+)
  • 1 × SD card slot
  • 1 × USB 3.0 port
• Storage: Built-in 32GB eMMC + external USB/SD support
• Voice Codecs: G.711, G.722, G.729A/B, GSM, iLBC, OPUS
• Call Features: Call queues, IVR, call forwarding, call parking, voicemail-to-email
• Security: SRTP, TLS, and built-in firewall for advanced protection
• Management: Grandstream Device Management System (GDMS) and UCM RemoteConnect
• Mounting: Desktop or rack-mountable design