Grandstream GXW4504 4x E1/T1/J1 Port Digital VOIP Gateway

Product Features:

• Dual Gigabit autosensing RJ45 network ports with integrated NAT router
• TLS and SRTP security encryption technology to protect calls and accounts
• Automated provisioning by HTTP/TFTP with XML config files
• Software configurable E1/T1/J1 ports, support PRI, SS7, MFC R2
• Supports a wide-range of voice codecs, including G.722, G.729, iLBC, and more
• Supports T.38 Fax for creating Fax-over-IP
• Supports multi-language voice prompts, and up to 120 concurrent calls

• E1/T1/J1 Interface: 4 RJ45 ports, supporting up to 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
• 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
• 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
• DTMF Methods: In-band audio, RFC2833, and SIP INFO
• 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
• Media Encryption: SRTP, TLS, HTTPS, SSH, 802.1X
• User-defined ports: SIP port, RTP port, HTTP/HTTPS port
• Universal Power Supply: Input: 100 ~ 240VAC, 50/60Hz; Output: DC+12V, 2A
• Mounting: Rack mount & Desktop

(1) Grandstream GXW4501 Digital VOIP Gateway