Call Capacity & Telephony:
Users: Supports up to 2000 users
Concurrent Calls: Up to 300 concurrent calls (or 200 secure calls via SRTP)
FXO Ports: 4 RJ11 ports for analog PSTN lines
FXS Ports: 4 RJ11 ports for analog phones/fax with lifeline support during power outage

Network & Connectivity:
Network Ports: 3 Gigabit RJ45 ports, supporting Router and Switch mode
PoE+ Support: IEEE 802.3at Power over Ethernet
USB & Storage:
2 USB 3.0 ports
SD card slot for call recording and backup
LCD Screen: 128×32 pixel display with navigation buttons

Audio & Video Codecs:
Audio: G.711 μ-law/a-law, G.722, G.723.1, G.726, G.729A/B, iLBC, Opus
Video: H.264, H.263, H.263+, H.265, VP8
Additional Features: Echo Cancellation (LEC), Adaptive Jitter Buffer, Fax over IP (T.38)

Security & Management:
Protocols: SRTP, TLS, HTTPS, SSH, 802.1X
Zero Config: Auto-discovery and provisioning of Grandstream IP phones
Remote Management: Compatible with Grandstream Device Management System (GDMS)
APIs: Integration available with CRM, PMS, and other platforms

PBX Features:
IVR (Auto Attendant): Up to 5 levels
Conference Bridges: Up to 5 rooms with 150 participants
Call Recording: Built-in storage + external (USB/SD) options
Wave App Support: Unified communications via mobile (Android/iOS) and browser (Chrome/Firefox)
Multi-language Web GUI, including English, Arabic, French, etc.

Physical & Environmental:
Dimensions: 485 × 187.2 × 46.2 mm (19” rack-mountable)
Weight: 2.49 kg (net), 3.26 kg (with packaging)
Power Supply: DC 12V/2A or PoE+
Operating Temp: 0°C to 45°C
Humidity: 10% to 90% (non-condensing)