Specifications |
Interface |
E1/T1/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 |
LAN, WAN, E1/T1/J1 |
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 & Video Capabilities |
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 |
Voice and Fax Codecs |
G.711 A-law/U-law, G.722, G.723.1 5.3K/6.3K, G.726, G.729A/B, iLBC, 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.21, V.27ter, V.29 for T.38 fax relay |
Voice-quality Enhancement |
t 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 |
DTMF Methods |
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, Venezuela) 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, PPP, 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 |
Advanced Defense |
Fail2ban, alert events, Whitelist, Blacklist, strong password based access control |
Physical |
Universal Power Supply |
Input: 100 ~ 240VAC, 50/60Hz; Output: DC+12V, 2A |
Physical & Dimensions |
GXW4501: Unit Weight: 2,350g; Package Weight: 3130g |
Temperature and 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 |
Additional Features |
Multi-Language Support |
Web UI: English, Simplified Chinese, Traditional Chinese, Spanish, French, Portuguese, German, Russian, Italian, Polish, Czech; Customizable IVR/voice prompts: English, Chinese, British English, German, Spanish, Greek, French, Italian, Dutch, Polish, Portuguese, Russian, Swedish, Turkish, Hebrew, Arabic; Customizable language pack to support any other languages |