Suppliers with verified business licenses
Audited Supplier 
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Product Details
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E1/T1/J1 Interface
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1/2/4 RJ45 ports, supporting up to 30/60/120 simultaneous VoIP calls
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Network Interfaces
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Dual self-adaptive Gigabit ports (switched or routed)
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Peripheral Ports
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(2) USB 3.0, (1) SD card interface
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LED Indicators
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LAN, WAN, E1/T1/J1
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LCD Display
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128x32 dot matrix graphic LCD with DOWN and OK buttons
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Reset Switch
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Yes, long press for factory reset and short press for reboot
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Voice & Video Capabilities
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Voice-over-Packet Capabilities
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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
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Voice and Fax Codecs
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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
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Fax over IP
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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
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Voice-quality Enhancement
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Echo cancellation (G.168-2004), Jitter buffer, Silence suppression (VAD, CNG), PLC
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QoS
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Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
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Signaling & Control
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DTMF Methods
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In-band audio, RFC2833, and SIP INFO
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Digital Signaling
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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
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Upgrade
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Firmware upgrade via TFTP / HTTP / HTTPS or local HTTP upload
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Device Management
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Syslog, HTTPS, Web browser, voice prompt, TR-069 management, backup and restore, port capture and packet capture
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Network Protocols
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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®
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Status and statistic
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Call status and history, device status monitoring and ISDN status monitoring
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Security
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Media Encryption
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SRTP, TLS, HTTPS, SSH, 802.1X
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User-defined ports
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SIP port, RTP port, HTTP/HTTPS port
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Advanced Defense
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Fail2ban, alert events, Whitelist, Blacklist, strong password based access control
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Physical
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Universal Power Supply
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Input: 100 ~ 240VAC, 50/60Hz; Output: DC+12V, 2A
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Physical & Dimensions
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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) |
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Temperature and Humidity
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Operating: 32 - 113ºF / 0 ~ 45ºC, Humidity 10 - 90% (non-condensing) Storage: 14 - 140ºF / -10 ~ 60ºC, Humidity 10 - 90%(non-condensing)
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Mounting
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Rack mount & Desktop
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Additional Features
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Multi-Language Support
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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
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Compliance
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FCC,CE,RCM,
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Suppliers with verified business licenses
Audited Supplier 
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