Grandstream GXW4502 E1/T1/J1 Digital VoIP Gateway: Bridging Traditional and IP Telephony Effortlessly |  Dual Gigabit autosensing RJ45 network ports | Supports Multi- Language Voice Prompts

Grandstream GXW4502 Specifications

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 x USB 3.0, (1) SD card interface
• LED Indicators: LAN, WAN, 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 reboot

Voice And 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, 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.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

Signalling And 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, HDLC, HDLC-ETH, PPP, Frame Relay (pending), IPv6, OpenVPN®
• Status and statistic: Call status and history, device status monitoring and ISND 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, 1.5A
• Physical & Dimensions: Unit Weight: x.xxx kg; Package Weight: x.xxx kg Unit Dimensions: 485mm(L) x 190mm(W) x 46mm (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: 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