Grandstream UCM6304 IP PBX (4 × FXO & 4 × FXS)

Key Features:

• 4 × FXO Ports: Connect up to 4 PSTN/analog trunk lines directly to your IP system.

• 4 × FXS Ports: Support up to 4 analog phones, fax machines, or legacy devices.

• SIP & VoIP Support: Broad SIP compatibility for IP phones, softphones, and video endpoints.

• High Capacity: Supports up to 2000 users and ~300 concurrent calls (G.711).

• Gigabit Ethernet Ports: Three network ports with PoE+ support and NAT routing for simplified deployment.

• No Licensing Fees: All-inclusive IP PBX functionality without per-user or recurring charges.

• Built-In Conferencing: Voice and video conferencing integrated with Wave app support.

• Cloud & Remote Management: Supports GDMS for remote provisioning, monitoring, and firmware updates.

• Advanced Telephony Features: IVR, auto-attendant, call queues, voicemail-to-email, call recording, call parking/pickup, BLF, call forwarding, DND, and more.

• Secure Communications: TLS/SRTP, HTTPS, SSH for secure signaling and media.

Hardware & Technical Specs:

• Analog Interfaces:
  • 4 × RJ11 FXO Ports for PSTN/analog trunk
  • 4 × RJ11 FXS Ports for analog handsets/fax

• Network: 3 × 10/100/1000 Mbps RJ45 ports (PoE+ supported, NAT routing)

• User & Call Capacity: Up to 2000 users, ~300 concurrent calls (G.711)

• Voice Codecs: G.711 (µ/a-law), G.722, G.723.1, G.726, G.729A/B, iLBC, OPUS, T.38 fax support

• Management & Provisioning: Web UI, GDMS cloud, TR-069, auto-provisioning

• Power: Universal 100–240 VAC input with PSU; PoE+ support

• Form Factor: Desktop/rack-mountable appliance

• Environmental: Operating 0–40 °C, humidity 10–90 % non-condensing