| Interfaces |
| 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, SD card interface |
| LED Indicators |
LAN, WAN, E1 |
| LCD Display |
128 x 32 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 14.4 kpbs 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 |
| Mounting |
Rack mount & Desktop |
| 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: Part 15 (CFR 47) Class B, Part 68 |
| CE: EN55022 Class B, EN55024, EN61000-3-2, EN61000-3-3, EN60950-1, TBR21, RoHS |
| RCM: AS/NZS CISPR 22, AS/NZS CISPR 24, AS/NZS 60950, AS/ACIF S002 |
| ITU-T K.21 (Basic Level); UL 60950 (power adapter) |
| T1: TIA-968-B Section 5.2.4 |
| E1: TBR4/TBR12/TBR13, E1: AS/ACIF |
| Temperature and Humidity |
Operating: 32 - 113ºF / 0 ~ 45ºC, Humidity 10 - 90% (non-condensing) |
| Storage: 14 - 140ºF / -10 ~ 60ºC, Humidity 10 - 90% (non-condensing) |
| Universal Power Supply |
Input: 100 ~ 240VAC, 50/60Hz; Output: DC+12V, 2A |
| Dimensions |
485 x 191 x 46.2mm |
| Weight |
GXW4501: Unit Weight: 2,350g |
| GXW4502: Unit Weight: 2360g |
| GXW4504: Unit Weight: 2380g |
