• Analog Telephone FXS Ports: 8 RJ11 ports
• PSTN Line FXO Ports: 8 RJ11 ports
• Network Interfaces: Three self-adaptive Gigabit ports (switched, routed or dual mode) with PoE+
• NAT Router: Yes (supports router mode and switch mode)
• Peripheral Ports: 2*USB 3.0, 1*SD card interface
• LED Indicators: Power 1/2, FXS, FXO, LAN, WAN, Heartbeat
• LCD Display: 128x32 dot matrix graphic LCD with DOWN and OK buttons
• Reset Switch: Yes, long press for factory reset and short press for reboot
• Voice-over-Packet Capabilities: LEC with NLP Packetized Voice Protocol Unit, 128ms-tail-length carrier grade Line Echo Cancellation, Dynamic Jitter Buffer, Modem detection & auto-switch to G.711, NetEQ, FEC 2.0, jitter resilience up to 50% audio packet loss
• Voice and Fax Codecs: Opus, G.711 A-law/U-law, G.722, G722.1 G722.1C, G.723.1 5.3K/6.3K, G.726-32, G.729A/B, iLBC, GSM; T.38
• QoS Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
• API Full API available for third-party platform and application integration
• Telephony Operating System: Based on Asterisk version 16
• DTMF Methods: In-band audio, RFC4733, and SIP INFO
• Provisioning Protocol & Plug-and-Play
• Mass provisioning using AES encrypted XML configuration file, auto-discovery & auto-provisioning of Grandstream IP endpoints via ZeroConfig (DHCP Option 66 multicast SIP SUBSCRIBE mDNS), eventlist between local and remote trunk
• Network Protocols: TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, STUN, SRTP, TLS, LDAP, HDLC, HDLC-ETH, PPP, Frame Relay (pending), IPv6, OpenVPN
• Disconnect Methods: Busy/Congestion/Howl Tone, Polarity Reversal, Hook Flash Timing, Loop Current Disconnect
• Media Encryption: SRTP, TLS, HTTPS, SSH, 802.1X
• Universal Power Supply: 2x DC 12V Power Jack, Input: 100~240VAC, 50/60Hz; Output: DC 12V, 2A
• Dimensions: 485mm(L) x 187.2mm(W) x 46.2mm(H)
• Temperature & Humidity: Operating: 32 - 113ºF / 0 ~ 45ºC, Humidity 10 - 90% (non-condensing), Storage: 14 - 140ºF / -10 ~ 60ºC, Humidity 10 - 90% (non-condensing)
• Mounting: Rack mount & Desktop
• Caller ID: Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 – BT, NTT
• Compliance: FCC: Part 15 (CFR 47) Class B, Part 68, CE: EN 55032, EN 55035, EN 61000-3-2, EN 61000-3-3, EN 62368.1, ES 203 021, ITU-T K.21, IC: ICES-003, CS-03 Part I Issue 9, RCM: AS/NZS CISPR 32, AS/NZS 62368.1, AS/CA S002, AS/CA S003.1/.2, Power adapter: UL 60950-1 or UL 62368-1