| Product Details |
| 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 | 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 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, Venezuela) SS7: ITU, ANSI,China |
| Upgrade | Firmware upgrade via TFTP / HTTP / HTTPS or local HTTP upload |
| Device Management | Syslog, HTTPS, Web browser, voice prompt, TR-069 management, 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: 3130gGXW4502: Unit Weight: 2360g; Package Weight: 3140g
GXW4504: Unit Weight: 2380g; Package Weight: 3160g
Unit Dimensions: 485mm(L) x 191mm(W) x 46.2mm (H) |
| 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 |
| Compliance | FCC,CE,RCM, |
