Phone System

Voice over Internet Protocol phone systems

IP Phone

IP phones offer a flexible, scalable solutions

Video Conference

Business meetings, remote collaboration

IP Paging System

Intercom and paging solutions ideal for office buildings

Call Center

Cloud based phone system and call center software

All Grandstream Products

Grandstream GXW4504 E1T1J1 Digital VoIP Gateway

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The GXW4504 supports PRI, SS7 and MFC R2 digital signaling protocols and nearly all major voice codecs including Opus, G.722, G.711, G.729, G.723, iLBC, G.726, GSM-FR, etc. This digital VoIP gateway includes dual Gigabit network ports with a configurable integrated NAT router, two USB 3.0 ports, and one SD card interface. By adding echo cancellation, jitter buffer, T.38 fax support, TLS and SRTP security encryption as well as automated provisioning by HTTP/TFTP with XML config files, the GXW4504 is able to cater to the VoIP needs of large and medium enterprises.


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 multi-language voice promtps

Supports 120 concurrent calls