Specifications:
- Mobile: 4 x GSM/CDMA/UMTS channels
- GSM Frequency: 850/900/1800/1900 MHz
- UMTS Frequency: 850/1900 MHz, 850/2100 MHz, 900/2100 MHz
- CDMA Frequency: 800 MHz
- Protocols: SIP, IAX2
- Transport: UDP, TCP, TLS, SRTP
- Voice Codecs: G.711 (alaw/ulaw), G.722, G.726, G.729A, GSM, ADPCM, Speex
- Echo Cancellation: ITU-T G.168 LEC
- DTMF Modes: RFC2833, SIP INFO, In-band
- Calling Types: Termination (VoIP to GSM/CDMA/UMTS), Origination (GSM/CDMA/UMTS to VoIP)
- LAN: 1 x 10/100Base-T Ethernet
- Network Protocols: FTP, TFTP, HTTP, HTTPS, SSH
- NAT Traversal: Static NAT, STUN
- Network Support: DHCP, DDNS, Firewall, OpenVPN, Static IP, QoS, Static Route, VLAN
- Power Supply: AC 100–240V
- Operating Range: 0°C to 40°C (32°F to 104°F)
- Storage Range: -20°C to 65°C (-4°F to 149°F)
- Humidity: 10–90% non-condensing
