Grandstream GXW4501 E1/T1 Digital VoIP Gateway

The GXW4500 series are E1/T1 Digital VoIP Gateways that allow digital PSTN and ISDN trunks to be integrated with VoIP networks. By connecting the GXW4500 series with a VoIP network and a traditional PBX or E1/ T1 provider, businesses can drastically increase the amount of PSTN/ISDN trunks integrated with their VoIP network. The GXW4500 series offers three models that provide 1, 2 or 4 E1/T1/J1 spans and support 30, 60 or120 concurrent calls to cater to the VoIP needs of large and medium sized enterprises. 

Grandstream GXW4501 Key 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 widerange of voice codecs, including G.722, G.729, iLBC, and more
• Supports T.38 Fax for creating Faxover-IP
• Supports multilanguage voice promtps

Grandstream GXW4501 Technical Specifications

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
• Supports up to 120 concurrent calls

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: 128x32 dot matrix graphic LCD with DOWN and OK buttons
• Reset Switch: Yes, long press for factory reset and short press for reboot

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