CPU: Information about the specific processor used in the UC120 is not publicly disclosed by OpenVox.

RAM: 1GB DDR3

Storage:
Internal: 16GB onboard flash memory
External: 1× Micro SD card slot, supporting up to 128GB

Telephony Interfaces:
FXS Ports: 1 (for connecting analog phones or fax machines)
FXO Ports: 1 (for connecting to the Public Switched Telephone Network)
GSM/LTE Module: 1 slot (supports either GSM or LTE, depending on the model)
Audio Interface: 1 × 3.5mm audio jack

Network Interfaces:
2 × 10/100 Mbps RJ45 Ethernet ports (LAN1 and LAN2)
SIM Card Slot: 1 (for GSM/LTE connectivity)

Performance:
Recommended Number of Users: Up to 30
OpenVox Document Center

Concurrent Calls:
Up to 15 concurrent calls using G.711 codec
Up to 5 concurrent calls using G.729 codec
SIP Registrations: Supports up to 32 SIP extensions
OpenVox Document Center

Software Features:
Operating System: Linux-based system

PBX Features:
Auto-attendant (IVR)
Call forwarding, call waiting, call transfer
Conference calling
Voicemail
Call detail records (CDR)
Call recording
Fax to email
Web-based management interface
Support for SIP and IAX2 protocols
Support for various codecs: G.711, G.722, G.729, GSM, etc.
OpenVox Document Center

Security Features:
Firewall
VPN support (OpenVPN, L2TP, etc.)
TLS and SRTP for secure SIP communication

Power Supply: 12V DC, ≥1.5A
Maximum Power Consumption: 12W
Dimensions: 160 × 105 × 24 mm
Weight: 0.5 kg
Operating Temperature: 0°C to 45°C
Storage Temperature: -20°C to 80°C
Operating Humidity: 10% to 90% non-condensing