Grandstream GXW4502

PRI gateway for connecting ISDN lines/telephone systems

Key features
  • Dual Gigabit auto-sensing 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 promtps
  • Supports up to 60 concurrent calls
£1,643.99 Incl. VAT
Delivery date with Express Shipping: 04/03/2024 If order placed before 12PM
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Internal ref: GRAGXW4502UK
Manufacturer part #: GXW4502
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Product description

Powerful Granstream PRI Gateway

The Grandstream GXW4502 is an advanced gateway that provides 2 E1/T1/J1 spans and supports 60 concurrent calls to cater to the VoIP needs of large and medium-sized enterprises.

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.


  • 2 RJ45 ports, supporting up to 30 simultaneous VoIP
  • Dual self-adaptive Gigabit ports (switched or routed)
  • (2) USB 3.0, (1) SD card interface
  • LAN, WAN, E1/T1/J1
  • 128x32 dot-matrix graphic LCD with DOWN and OK buttons
  • Reset switch
  • 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 Packet 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 14.4kpbs and auto-switch to G.711 for Fax Pass-through, 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
  • DMTF Methods: In-band audio, RFC2833, and SIP INFO
  • Digital Signalling: 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
  • 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

In the box

  • Grandstream GXW4502 E1/T1/J1 Gateway
  • User Manual 


Data sheet

Product Specs.

More Information
Manufacturer part #GXW4502

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