Description

The Grandstream GXW4504 Digital VoIP Gateway features 4 T1/E1/J1 span and supports 120 concurrent calls.

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