Interfaces
T1/E1/J1 Interface 1/2/4 RJ45 ports, supporting up to 30/60/120 simultaneous VoIP calls
Network Interfaces Dual self-adaptive Gigabit ports (switched or routed)
Peripheral Ports (2) USB 3.0, (1) SD card interface
LED Indicators WAN, LAN, T1/E1/J1
LCD Display 128×32 dot matrix graphic LCD with DOWN and OK buttons
Reset Switch Yes, long press for factory reset and short press for the reboot.
Voice Capabilities
Voice-over-Packet
Capabilities
LEC with NLP Packetized Voice Protocol Unit, 128ms-tail-length carrier grade Line Echo Cancellation, Dynamic Jitter Bu
Modem detection & auto-switch to G.711
Voice and Fax Codecs G.711 A-law/U-law, G.722, G.723.1 5.3K/6.3K, G.726, G.729A/B, Opus, iLBC, GSM-FR, AAL2-G.726-32
Fax over IP
T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Passthrough, Fax data pump V.17, V
V.27ter, V.29 for T.38 fax relay.
Voice-quality
Enhancement
Echo cancellation (G.168-2004), Jitter buffer, Silence suppression (VAD, CNG), PLC
QoS Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
Signaling & Control
DTMF Methods In-band audio, RFC2833, and/or SIP INFO
Digital Signaling
SIP (RFC 3261) over UDP/TCP/TLS, PRI, SS7, MFC R2, RBS (pending)
PRI switch types: Euro ISDN, nation, Q.SIG
CAS: MFC R2 (Argentina, Brazil, China, Czech Republic, Colombia, Ecuador, Indonesia, ITU, Mexico, Philippines, Venezue
SS7: ITU, ANSI, China
Upgrade Firmware upgrade via TFTP / HTTP / HTTPS or local HTTP upload
Device Management Syslog, HTTPS, Web browser, voice prompt, backup and restore, port capture, and packet capture
Network Protocols
TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, STUN, SRTP, TLS, LDAP, PP
Frame Relay (pending), IPV6, OpenVPN®
Status and statistic Call status and history, device status monitoring, and ISDN status monitoring
Security
Media Encryption SRTP, TLS, HTTPS, SSH, 802.1X
User-defined ports SIP port, RTP port, HTTP/HTTPS port
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